Hi-
I just received an NES PowerPak & got it going. It's a very impressive product! http://www.retrousb.com/product_info...products_id=34
However, I'm having 1 problem with the audio.
There's a low, loud hum that's present whenever there are *any* graphics on-screen. That is, the only time when it's not humming is after a ROM has loaded & the screen blanks for a moment before the ROM runs. There's hum during the PowerPak menu & hum during any ROM gameplay.
I'm using the RCA video & audio outputs. I'm splitting the audio into L&R and plugging it into my stereo A/V receiver. I've plugged it into 2 different inputs, so I don't think that my receiver's inputs are faulty. I've also tried playing an original factory cart (Super Mario Bros 3) on the same NES with the same cable hookup & there is no hum when playing the original cart. I'm using an original US front-loading NES with the following info on its bottom stickers:
Model No. : NES-001
(c) 1985 Nintendo
FCC ID: BMC9BENINTENDOETS
A separate sticker with no description may be the serial number: N7691601
Please advise me on how to fix this. I've got a relatively fresh 72-pin adapter in the machine.
Oh, I have, in the past performed a small mod to the motherboard to supposedly help reduce the blinking gray screen. I believe it involved cutting a pin leg on the motherboard. Would that affect the PowerPak's audio?
Thank you very much,
-Jason
PS--Retrozone recommends a "drive sorter" to get all the ROMs in alphabetical order. A cursory Googling didn't turn up what I want--can somebody point me in the right direction please?
PPS--What are the shorthand notations on ROM names? I see b1, o1, p1, a1, b2, o2, etc. etc. on many ROM filenames.