SMS not powering on

[kenobi1979]

Hey All,

I picked up an SMS lately, and it won't power on.

I opened it up bought a new regulator for it, soldered it in, and it still won't power on. I am not sure If I messed up when I soldered, and the voltage is still not being able to run through.

When soldering on the underside of the board, I may have left surface scratches on the board from my hands being shaky when handling the soldering gun, but no big gashes were made, would this affect the power on issue or should I just desolder, and try again.

It could be my soldering skills are not good, since it looks kinda messy.

Does anyone have any guides or tips for fixing the power-on issue, and how to properly desolder the regulator, and install a new one. I am not sure if I did it right.

thanks for the help

[ApolloBoy]

You might have severed a trace or two by scratching the board, do you have a multimeter on hand? Also pics?

[kenobi1979]

You might have severed a trace or two by scratching the board, do you have a multimeter on hand? Also pics?

I will try and put one up later today, and yeah I wonder if I did scratch it bad enough to sever a trace. If i did sever trace, is it fixable?

No I haven't been able to grab one yet, I need one badly

[teh_d3th_st4r]

The problem I usually have with the Master System and the Genesis Model 2 is a broken solder joint at the base of the power jack... also, I have all kinds of problems with the power supplies themselves. There's an electrolytic capacitor in there, and over time all of the electrolytes leak out and/or evaporate.

You should go re-solder the joints on your power jack, then crack open your power supply de-solder the capacitor, and then replace it.

I hope this helps.

[Polygon]

The problem I usually have with the Master System and the Genesis Model 2 is a broken solder joint at the base of the power jack... also, I have all kinds of problems with the power supplies themselves. There's an electrolytic capacitor in there, and over time all of the electrolytes leak out and/or evaporate.

You should go re-solder the joints on your power jack, then crack open your power supply de-solder the capacitor, and then replace it.

I hope this helps.

That's some good information! Thank you very much.

[ApolloBoy]

I will try and put one up later today, and yeah I wonder if I did scratch it bad enough to sever a trace. If i did sever trace, is it fixable?

No I haven't been able to grab one yet, I need one badly
It should be fixable, just scratch off the coating on each end of the severed trace, tin the exposed copper and then patch it up with a wire. However, I'd advise getting a multimeter as it'll not only help you figure out if you have a broken trace, but also if there's any voltage flowing through the system.

[kenobi1979]

Thanks for the help, yeah I have not been able to get a multimeter because of cash flow. I will test it out when I get one. I also need a desolderer

I am glad I didn't ruin my SMS by scratching it up. I need to get better at my soldering skills.

[8-Bit Archeology]

Theres more than one way to desolder. One of the best in my opinion is to buy the wire braid. as it does not require and suction. DO NOT buy the solder sucker that looks like a syringe on steroids. its a spring loaded air sucker. and when your working on a precision job you dont need anything jumping to catch some solder. plus the wire braid is only a couple bucks.

[raylydiard]

a new 7805 will bring this console back to life.