Turbo Duo blessing, and curse

[bones11]

Had the good fortune to find a Turbo Duo at the flea market today, for $5! It's just the console and one hu card, Keith Courage. Unfortunately the seller didn't have anything else to go with it, no controllers, no rf or AV cable, no power supply. In digging around the net it seems like none of these are standard parts...


Controllers for the Turbo Graphx are not compatible with the Duo
AV cable has funky 5 pin connector
10 volt power supply


I have a couple of Turbo Graphx controllers, was bummed to find out they won't work on the Duo. Searched around for an adapter to allow standard Turbo Graphx controllers to play on the Duo, but couldn't find anything for sale. Turbo Zone Direct does have a replacement cord http://www.tzd.com/proddetail.asp?prod=001 tho they want $20 for it. It looks like a standard 8 pin din to 8 pin mini din adapter could also work. If that's the case may be able to dig something like that up.

Saw somewhere that the AV cable for the Genesis model 1 can be used for the Turbo Duo, has anyone had success with that? Those are available on ebay, so could get one there.

For power I could probably dig up a 9 volt supply with 1 amp easy enough. Would that be enough juice, or does the Duo have to have 10 volts?

Thanks in advance for any suggestions. Trying to get this tested, hopefully working, on the cheap, tho suspect it will cost more than what was paid for the console to achieve that ;)

[c0ldb33r]

Number One - you lucky bastard don't bitch about a $5.00 duo ;)

Number Two - There's been an enormous amount of turbo/pc-engine stuff in the buying/selling forum lately. I'd star there.

[bones11]

Number One - you lucky bastard don't bitch about a $5.00 duo ;)

Number Two - There's been an enormous amount of turbo/pc-engine stuff in the buying/selling forum lately. I'd star there.

Yeah, that's just me being a crotchity old bastard, pretty stoked about the find really!

Thanks for the tip, just browsed through a slew of Turbo stuff for sale. Lots of games, tho didn't see a power supply or AV cable in there, hoping to get this thing tested before putting too much into software. On the other hand Dracula X would be sweet.

[c0ldb33r]

you also might want to ask pcenginefx.com forums, that's their specialty.

[cyberfluxor]

Yeah, I was in a similar boat back in May. I purchased a Duo with controller for $3 and seperately for $1 the AV cord with 2x 3.5mm to RCA cables and 1 CAT-5 cable (they were all in a baggy hanging on a wall). I couldn't find the AC adaptor after searching for awhile, but gave up and went from there. Searching around online was little help to hunting down a power block, but one thing for sure it'd cost at least $20 on a standard day. With little hope I decided later in the week to go back and double check incase it took awhile to hit the floor, come to find out it was with the waffle makers and whatnot elsewhere in the store for $1.

So, maybe you should double check with the sellers as these cables can be annoying and uncommon like the RF adaptor for a model 1 Atari 5200. Otherwise, good luck as it may be awhile before you find what you need. And Radio Shack does sell a variable AC adaptor you can use for $18 incase you get desperate.

[MrSparkle]

I am deeply saddened by your misfortune, and being the nice guy that i am will pay you the sum of $6 for your TurboDuo.

[ApolloBoy]

Saw somewhere that the AV cable for the Genesis model 1 can be used for the Turbo Duo, has anyone had success with that? Those are available on ebay, so could get one there.

For power I could probably dig up a 9 volt supply with 1 amp easy enough. Would that be enough juice, or does the Duo have to have 10 volts?

Yes, you can use a model 1 Genesis/SMS AV cable with the Duo. 9 volts for the power supply should be enough, just so long as you respect amperage and polarity.

Congrats on your find, you should look into getting your Duo region modded like I did (mine was actually pre-modded) so you can play both American and Japanese HuCards.

[c0ldb33r]

Congrats on your find, you should look into getting your Duo region modded like I did (mine was actually pre-modded) so you can play both American and Japanese HuCards.
Probably cheaper and easier just to pick up a loose coregrafx.

I'm interested to see if this duo actually works for $5.00

[maxlords]

Be very careful using a non-standard power supply with a Duo. They're sensitive to long term discrepancies in voltage/amperage. Honestly I'd pay $50+ for a legit Duo power supply for my Duo....

[c0ldb33r]

Be very careful using a non-standard power supply with a Duo. They're sensitive to long term discrepancies in voltage/amperage. Honestly I'd pay $50+ for a legit Duo power supply for my Duo....
Two things:
1. I'm using a compatible radioshack version for my pc-engine duo, should this be a problem?
2. I don't have an AC adapter for my PC-Engine GT, what do you recommend?

[Steve W]

I'm also in the same boat, I have a bare console Duo, and I've been meaning to look for the parts I need to get it working (if it even does), but I never get around to it. I don't want to do any damage to the unit by putting in any old power supply.

[FABombjoy]

Be very careful using a non-standard power supply with a Duo. They're sensitive to long term discrepancies in voltage/amperage. Honestly I'd pay $50+ for a legit Duo power supply for my Duo....
They are? Do you have a source for this?

[Lios]

The American Duo's power supply is as follows:

10V DC 1000mA Positive Tip

though a 9v power supply should work you'd be under juicing your duo and in the long run this is not a good thing, though it may only shorten the components life for a small amount, it's best to get the proper adapter if at all possible.

Also on an av cable, that is a standard 5 pin din you are looking at, and while a Genesis 1 av cable will work, be careful as its pinout does not exactly match, you can use only two of the 3 av jacks on the end, as the genesis 1 cable is mono only, and the duo is stereo out.

One of the pins coming from the duo is +5v out, and if are using a genesis 1 av cable, one of the unused pins (the green output for the genesis rgbs output) would be +5v, now it's not being used on a standard av cable so you are safe, however this illustrates the point that it is NEVER a good idea to plug random stuff into random systems, even av ports. If that +5v went into one of your tv's composite inputs it can and will fry something.

Anyways if you use a genesis one cable plug the audio jack (should be white) into the video port ie into the yellow input on your tv. The Yellow jack on the av cable will be your left audio channel from the duo and it should go into the left audio input on your tv (or even right audio, it doesn't really matter as you will only have one channel of audio with a genesis av cable)

There are some aftermarket av cables for the duo that can be had for $10, but don't even bother they are garbage, trust me from first hand experience. If you can't find an original cable you are better off making your own then buying one of the aftermarket ones.

As far as an adapter to use tg-16 controllers on your duo, there was an official cable for this sold bitd, but they are hard to come by and expensive nowadays. However if you can solder, and buy a male 8 pin mini din and female 8 pin din, and some cat V cable you can make your own. AFAIK there exists no readily cable beyond the official one mentioned that will work for this purpose, so you can either replace the cord on your controller or make an adapter like i mentioned.

I hope this helps, if you have anymore questions feel free to ask, I know a lot about pce/tg-16 hardware.


Be very careful using a non-standard power supply with a Duo. They're sensitive to long term discrepancies in voltage/amperage. Honestly I'd pay $50+ for a legit Duo power supply for my Duo....

Where did you hear this? The duo is no more or less sensitive with voltage discrepancies than any other system. It uses a 7805 power regulator just like most other consoles. In fact most 7805 can handle input voltages up to ~30-35V max, although this isn't a good idea as it will be generating a lot more heat than normal. Small discrepancies are no problem, though the 7805 expects typically an input of a couple volts higher than what it is regulating the voltage down to which is +5volts. If you ever "fry" your system from the wrong adapter, chances are all you have done is blown the fuse and fried the power regulators, both of which are a very easy fix.

[c0ldb33r]

The American Duo's power supply is as follows:

10V DC 1000mA Positive Tip

though a 9v power supply should work you'd be under juicing your duo and in the long run this is not a good thing, though it may only shorten the components life for a small amount, it's best to get the proper adapter if at all possible.
What about a Japanese pc-engine duo? This is the AC adapter that came with my pc-engine duo. I knew it wasn't going to be the original one, mainly because of Japan - North American differences. Is it okay to use? Am I slowly killing my duo? It seems to work fine.

http://i152.photobucket.com/albums/s182/c0ldb33r/th_009.jpg (http://s152.photobucket.com/albums/s182/c0ldb33r/?action=view&current=009.jpg) http://i152.photobucket.com/albums/s182/c0ldb33r/th_008.jpg (http://s152.photobucket.com/albums/s182/c0ldb33r/?action=view&current=008.jpg)

edit: I just checked the back of my duo, it says DC IN 10V, should I look for a different AC adapter? could I use a North American Turbo Duo AC adapter for my PC-engine duo?

[zektor]

I have a modified TurboPad for sale that will work with your DUO. It has the plug that will plug into the DUO's port, and allows the original TG16 controllers to plug into it. So, you CAN you those original pads with this TurboTap. PM me if you want it :)

And congrats on that deal. Amazing!

As for power supplies, while you can get away with using an off voltage universal power supply, I do not recommend it. Although replacing blown fuses and power regulators may be an easy task for some, there are many of us that do not know how to do this or have the fear of ruining their system ever further by cracking it open and messing around. And, there are absolutely other types of damage that can occur from using incorrect PSU's. I wouldn't do it if I cared about the system honestly. Better off hunting down the correct adapter in my honest opinion.

10V is certainly an odd one too. Just as odd as the 11V TurboGrafx CD supply.

The A/V cable from a Genesis (or C64 & Vic, SMS) will work, but you will sacrafice stereo sound as these only have mono. You can also build a cable quite easily if you have an old DB5 pc keyboard (same larger five pin plug) laying around. If you do you can cut the cable and splice a/v connectors to it. I have done this dozens of times in the past for a quick a/v fix on the consoles I mentioned :)

[c0ldb33r]

Okay, so this is what I've found so far.

You can buy actual NEC AV cables from NCSX - link (http://www.ncsxshop.com/cgi-bin/shop/18690.html).

There are a few people at pcenginefx.com that say that the AC adapter from a model 2 genesis will work just fine. I just grabbed mine and checked and it is 10V, but is only 0.85A, not the 1.0 as specified above.

So, is it better to have (A) 9V and 1.0A or (B) 10V and 0.85A?

edit: this is weird, the common statement at the pcenginefx.com forums seems to be that:

you need 9VDC @ 1000mA for PC Engine Duo/Duo-R/Duo-RX but the back of my Duo specifically says 10V.

[bones11]

Thanks for all of the tips guys, this is really helpful. For starters I ordered a Genesis 1 AV cable from ebay and will try a 9 volt power supply to see if it will fire up. FWIW the Duo seems to use a _big_ barrell connector for the power supply, dug through my parts boxes and couldn't find anything similar. May have to take a trip over to Radio Shack for a quick fix for now.


If that seems to work I'll probably suck it up and order the official AV cables, power supply and controllers. Just want to see if the console works before shelling out too much.

[Lios]

Okay, so this is what I've found so far.

You can buy actual NEC AV cables from NCSX - link (http://www.ncsxshop.com/cgi-bin/shop/18690.html).

There are a few people at pcenginefx.com that say that the AC adapter from a model 2 genesis will work just fine. I just grabbed mine and checked and it is 10V, but is only 0.85A, not the 1.0 as specified above.

So, is it better to have (A) 9V and 1.0A or (B) 10V and 0.85A?

edit: this is weird, the common statement at the pcenginefx.com forums seems to be that:
but the back of my Duo specifically says 10V.

Due to the nature of the 7805 which regulates the voltage internally, 9V is perfectly fine, really anything at or above 7 volts and at or below 11 volts should be fine.

What the 7805 wants is a voltage that is at least a few volts higher than what it is regulating the power down to (hence the 7 volts, as it is regulating the input voltage to a very component friendly 5v). It does this by dissipating excess voltage as heat hence the heat sinks on the 7805s. If you used 7 volts for example, as it has less voltage to convert to heat it won't get as hot as a 9 volt, 10 volt or anything higher than 7 volts. The reason for the 10v spec, is that the manufacturer wanted to make 100% sure that the 7805 is regulating the input down to 5v 100% of the time or get pretty darn close. If the input voltage isn't enough the 7805 might "hiccup" at some points and not guarantee the 5v that we want, which while not disastrous, it can cause weird stuff to happen as it is not getting enough power. Also every 7805 has a very small margin of error that is allowed as per the datasheet. So not every 7805 is exactly the same.

So why the 10 volts? Wouldn't 7 volts, 8 volts, or even a standard 9 volts be more ideal due to heat dissipation? Honestly I am not entirely sure, other than the reason mentioned above. One manufacturer's idea of "a few volts higher on input" differs from another. Also depending on what the device is, and how expensive, they might design it to have good heat dissipation and just not take any chances with a lower voltage. The duo was NOT a cheap device, neither in design or for it's retail value when it was new. Remember a 7805 can take input up to ~35 volts max, though if you use voltages near it's max you better be damn sure that you have good heat dissipation, plus running near it's maximum capacity is not ideal as it will shorten it's life, and if you are very close to the 35 max, if you go over your going to fry the 7805.

Also don't worry too much about the amperage, as long as you have enough it will be fine. 0.85 should be enough for the duo, though I could be wrong.

To answer your question either power supply should be fine, assuming the duo is happy with just 0.85 amps.

[Draven]

DUO for 5 bucks...not bad. I just picked up a top load NES at the flea market with all hookups and two square controllers for 10 bucks. Can't you just use a universal power supply from Wal-Mart that has the interchangeable heads?

[dendawg]

According to this (http://www.pcenginefx.com/forums/index.php?topic=1480.30;wap2), you can use a Genesis 2 AC adapter.

[c0ldb33r]

What the 7805 wants is a voltage that is at least a few volts higher than what it is regulating the power down to...
Do you have a source for this?

[FABombjoy]

Do you have a source for this?
google: 7805 datasheet

[Lios]

google: 7805 datasheet

Yep it's all in the datasheet for the 7805.

Also one last thing I forgot to mention, the Duo takes a dc power adapter and as such polarity is very important. Get an adapter with the reverse polarity and you can expect it to fry within seconds, and then it will be off for repairs. I cannot stress enough how important it is to triple check the polarity before plugging in any adapter for dc powered equipment.

[MrSparkle]

yea i lost two pretty expensive ethernet switches to this back in the day, DOH!

[eugenek]

Eh, just find the cheapest way to get it up and running now. It's probably got busted capacitors anyway. If you got one of the rare gems that still works, then unplug it and shell out the bucks for the proper parts.

[zektor]

Something odd happened to me today, and it is quite funny because it has directly to do with a DUO a/c adapter:

I purchased a Supergrafx on ebay from Japan and it arrived today. I was so excited to get it going as I have two SG games I have had for some time and have never been able to play. Hooked it all up and....no power. After further investigation I had noticed that the seller had sent me the WRONG a/c adapter!

It is PSU is NEC Model PAD-124....a 10V 1000mA power supply. The official DUO power supply. The tip was exactly the same as the port on the SG, and it did fit. Not only was the voltage incorrect, but so was the mA rating and polarity.

I freaked out thinking I may have damaged the SG, and ran out to Radio Shack for a universal. I mean, what would make me think in the slightest that the seller would include the WRONG psu? I have learned my lesson and now will always check adapters first before plugging them in.

When I went to radio shack, I found that they (or at least the stores in my area) no longer carry the good old universals that come with half a dozen sized tips. You have to actually KNOW the tip you need and they supply you with ONE for free....others will be $6.59 each! Talk about trying to juice $$ from the customer. I wasn't sure of the tip and had to go all the way home and grab that DUO adapter and bring it back to the store to match.

Long story short, I ended up buying a 9V 800mA adapter and had to use a "Q" type radio shack tip on center negative (this "Q" tip IS the correct "Fat" tip you would need for the DUO btw). I did some research beforehand and this is the exact spec for the SG. And, it works! :)

Anyway, I now have that elusive DUO adapter and do not need it. I was simply going to list in the buy/sell forums, but since you guys have been talking about it I figured I'd bring it up here. It's official NEC goods! PM me if anyone here needs it.

EDIT: Pending sale :)

[maxlords]

Where did you hear this? The duo is no more or less sensitive with voltage discrepancies than any other system. It uses a 7805 power regulator just like most other consoles. In fact most 7805 can handle input voltages up to ~30-35V max, although this isn't a good idea as it will be generating a lot more heat than normal. Small discrepancies are no problem, though the 7805 expects typically an input of a couple volts higher than what it is regulating the voltage down to which is +5volts. If you ever "fry" your system from the wrong adapter, chances are all you have done is blown the fuse and fried the power regulators, both of which are a very easy fix.

I've seen both Duos and TG16 CD systems die from long term use on non-standard power supplies. I don't have the tech skills to find what's wrong with em...wouldn't know it's an easy fix.

[zektor]

I've seen both Duos and TG16 CD systems die from long term use on non-standard power supplies. I don't have the tech skills to find what's wrong with em...wouldn't know it's an easy fix.

I agree. I have a TG-CD unit and use it's original 11V power supply. Could I play around and test other universal or odd voltage supplies? Could I get one to work? Sure. But I certainly wouldn't feel too good about it UNLESS the supply I was using was the *exact* spec....like the Supergrafx replacement supply I purchased. If it is anything other than the manufacturer specification for the device I would NOT recommend using it at all...let alone for extended periods of time.

[FABombjoy]

It's highly unlikely that it was the fault of the power supply, unless that supply was itself defective. They are incredibly simple devices and there is no magic in the NEC-branded supplies. NEC's hardware is flaky even with their OEM power supplies.

[bones11]

Progress! The Genesis 1 AV cable finally came in the mail today. Plugged that in, added a 9v 1000ma power supply, threw in Keith Courage and success! The Duo fired right up. Well the video did at least, no sound. Does Keith Courage have sound while in attract mode? Don't have a Duo controller yet, so can't play around with any settings or start the game. Not too worried about the lack of sound right now, just getting clean video is a good sign.

Next steps are to get the official av cable and a Duo controller. Zektor, I'll drop you a PM about the multi-tap adapter, that may be a good way to go. Also need to pick up a CD game, don't have one yet and need to see if that side works.

Stay tuned!

[zektor]

Progress! The Genesis 1 AV cable finally came in the mail today. Plugged that in, added a 9v 1000ma power supply, threw in Keith Courage and success! The Duo fired right up. Well the video did at least, no sound. Does Keith Courage have sound while in attract mode? Don't have a Duo controller yet, so can't play around with any settings or start the game. Not too worried about the lack of sound right now, just getting clean video is a good sign.

Next steps are to get the official av cable and a Duo controller. Zektor, I'll drop you a PM about the multi-tap adapter, that may be a good way to go. Also need to pick up a CD game, don't have one yet and need to see if that side works.

Stay tuned!

You should have sound immediately in attract in Keith Courage. One of three things:

The AV cable is not outputting sound correctly
The caps for audio need replacing
Some other odd problem

The adapter I spoke of works great (tested on a DUO, as well as a Supergrafx, PC-Engine and Core Grafx!) and regular TG16 controllers work great in all modes (single/multi). I'll await your PM!

[c0ldb33r]

Typically duo audio problems will take the form of a lack of CD audio.

If there's no audio with a hucard game, I'd double check the AV cable.

[eugenek]

Progress! The Genesis 1 AV cable finally came in the mail today. Plugged that in, added a 9v 1000ma power supply, threw in Keith Courage and success! The Duo fired right up. Well the video did at least, no sound. Does Keith Courage have sound while in attract mode? Don't have a Duo controller yet, so can't play around with any settings or start the game. Not too worried about the lack of sound right now, just getting clean video is a good sign.

Next steps are to get the official av cable and a Duo controller. Zektor, I'll drop you a PM about the multi-tap adapter, that may be a good way to go. Also need to pick up a CD game, don't have one yet and need to see if that side works.

Stay tuned!

Probably bad caps like I said before, though the notorious cap problem *usually* only affects redbook audio. Maybe you'll luck out and it'll be a bad connection on the input or something. Better hope it's not caps--it's very difficult to isolate which ones are causing the problem and thus difficult to fix.

[eugenek]

Typically duo audio problems will take the form of a lack of CD audio.

If there's no audio with a hucard game, I'd double check the AV cable.

Ah, beat me to it.

[bones11]

Thanks for the replies guys. I'm hoping it's the av cable as well, will be ordering the official one shortly and cross fingers that solves the problem. If not it'll be time to read up on Duo cap replacement.

Zektor, pm sent your way :0

[c0ldb33r]

...If not it'll be time to read up on Duo cap replacement.
Start with this thread:
http://www.pcenginefx.com/forums/index.php?topic=960.0

But unless you're pretty handy, you're probably better off sending it off to someone else to fix. OSG (http://www.oldschoolgamer.ca/node/115) does work on duo's and gives free estimates. You could also get a region mod switch installed at the same time.

[bones11]

Cool, hadn't thought of OSG, I've had them do mods on a few other consoles, always comes out nice.

In playing around with the Duo some more I noticed a headphone jack and volume control. Plugged some headphones in and viola...sound is working! This makes me think even more that it's just a bad AV cable and the console sound is fine, at least on the hu card side. The more I toy around with this the more I like it, nifty little console, could go nicely next to my CDX:-P

[vintagegamecrazy]

I have a couple of Turbo Graphx controllers, was bummed to find out they won't work on the Duo. Searched around for an adapter to allow standard Turbo Graphx controllers to play on the Duo, but couldn't find anything for sale. Turbo Zone Direct does have a replacement cord http://www.tzd.com/proddetail.asp?prod=001 tho they want $20 for it. It looks like a standard 8 pin din to 8 pin mini din adapter could also work. If that's the case may be able to dig something like that up.

Will that cable convert a TG16 Turbo Tap to work on a Duo, I really need one of those to use the many of my TG16 controllers for the duo.

[RadiantSvgun]

Typically duo audio problems will take the form of a lack of CD audio.

If there's no audio with a hucard game, I'd double check the AV cable.

My duo had no CD sound, and the problem eventually turned into a total sound problem. Best get the caps fixed.

[bones11]

Will that cable convert a TG16 Turbo Tap to work on a Duo, I really need one of those to use the many of my TG16 controllers for the duo.

From my understanding yes, the cord shown in that link will do that. You may want to drop Zektor a line, he's done that conversion with a TurboTap.

[c0ldb33r]

From my understanding yes, the cord shown in that link will do that. You may want to drop Zektor a line, he's done that conversion with a TurboTap.
The episode of pcenginefx TV that features Street Fighter II shows how to do the conversio. It took the guy about 2 minutes to do.

[zektor]

The cables are somewhat interchangeable between the DUOTap and TurboTap. I have done both, and the reason I say "somewhat" is because one of them needs the connector's outer plastic clips to be clipped slightly to plug in. I used a standard nailclipper to perform this operation, although I cannot remember which board (DUOtap or TurboTap) required it. Not a big deal and very easy to do. The hardest part is having to buy both a TurboTap AND DUOTap to do the job :) You can also swap controller cables on a few of the controllers (Ie: tg16 controller cable and Avenue 6 pad cable), but be careful of third party controllers or those fakey NEC controllers as their cables are different!

[rbudrick]

I got my Duo for $2.

But then I bought a $30 adapter from TurboZone Direct, plus a controller adapter, so it probably cost me $50-70 in the long run.

-Rob

[bones11]

Small update. Got a Turbo Tap, couple of new controllers, and a CD game, Sherlock Holmes II. Not the best CD game, but video and sound work nicely when using the headphone jack.

Question...I ordered the official Duo AV cable from tzd.com 8 days ago, and my PayPal payment is still showing as 'unclaimed.' Has anyone ordered from this site lately? I'm wondering if they are out of business now. Is there anywhere else to get the official AV cable?

[zebular]

Sorry to update an extremely old thread but I'm in the same boat... looking for a AC adapter, AV cords and a TG controller adapter OR cheap PCE controller. I read in this thread that the Genesis 2 power supply will work on the Turbo Duo, if that's true is the barrel on it large enough as I keep reading about the power barrel being very large on it.

[BricatSegaFan]

The barrel won't fit from a Sega model 2. The duo is gigantic.

I'm currently looking for another ac adaptor because the one I have is way too short (2ft)

[c0ldb33r]

Don't mess around with crap like that. Get a proper AC adapter.

This place sells decent replacement ones with the correct specs:
http://www.retrogamecave.com/nec-ac_adapter.html

[zebular]

Don't mess around with crap like that. Get a proper AC adapter.

This place sells decent replacement ones with the correct specs:
http://www.retrogamecave.com/nec-ac_adapter.html

Apparently I'm going to have to as once I try to buy one from there both models are sold out... awesome.

[zebular]

Alright, been doing more research... you think a Radioshack 10V 850mA Power Supply with the Q barrel on it will work as apparently the Turbo Duo wants 1000mA?

Edit: Well I just ordered the universal plug and tip off of ebay. I would had gone to my local radio shack but seeing as how I had to do the same thing for my JVC Xeye before and they charged me like $30 for the adapter and tip I'm going the $15 route. Radio Shack should start giving away bottles of lube with each purchase.

[Ace]

In general, you should be fine with a power supply of 9V or 10V, but BE DAMN SURE the polarity matches and the amount of current the power supply can provide is 1A/1000mA or more (and make sure you have the right tip). Higher current isn't a bad thing as the power supply is able to supply more current than the TurboDuo actually needs. So, if you have a power supply that's rated for, say, 2A/2000mA, the TurboDuo will only take what it needs. Remember this and you should have less of a headache finding a compatible power supply.

[FABombjoy]

BE DAMN SURE
The nice thing about the Duo you only have to be pretty sure :D. There is a big fat blocking diode in them just in case the wrong polarity supply is used, or in case of a failed rectifier in the power supply. My guess is that NEC warrantied a lot of dead TG16 units due to NES power supplies, which is why they switched to crazy DC plug sizes and started including blocking diodes.

Also, the earlier talk about Genesis 2 power supplies can be traced to the Duo-R / Duo-RX, which use the same size connector as the Genesis 2. Certainly not the US Duo. If a person wanted to "roll their own" power supply for the US Duo, I do carry the proper sized DC plug (http://console5.com/store/parts/dc-power-jacks/turbo-duo-power-connector.html).

[zebular]

So will this work????
http://www.ebay.com/itm/200882110343?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

with this tip

http://www.ebay.com/itm/220953738350?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

[Ace]

Although the power supply was sold, I will answer with this: no.

If you have a PC Engine Duo-R or Duo-RX, it's fine, but it's not necessarily a good idea to use that power supply on a TurboDuo or standard PC Engine Duo. Those need a 1A power supply.

[Emperor Megas]

The nice thing about the Duo you only have to be pretty sure :D. There is a big fat blocking diode in them just in case the wrong polarity supply is used, or in case of a failed rectifier in the power supply. My guess is that NEC warrantied a lot of dead TG16 units due to NES power supplies, which is why they switched to crazy DC plug sizes and started including blocking diodes.I didn't know that. This is why I love this site.

[FABombjoy]

FWIW, they dropped that diode from the Duo-R / RX. Either the paranoia had subsided by then or the accountants caught up with them.

They also eliminated the surface mount caps. I'd like to know if it was for cost savings or if they knew the SMD parts and/or SMD assembly process wasn't mature. I'd push my chips on to "cost" if I had to guess.

[zebular]

Ehh well, I'll just break it some more then since apparently nobody in the world sells a 10v 1Amp power supply with a removable barrel.