Author Topic: HELP Please - Need NES Motherboards  (Read 206 times)

December 06, 2012, 11:20:28 AM
Read 206 times

Quazimoto

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Hello All,

So it seems I have a little issue.  I have some custom painted console orders to fill and am having some trouble with a couple of the systems functioning properly.

One turns on alright most of the time (sometimes just gives me a still gray screen).  However, when it does boot the game up, the graphics are jumbled.  Testing with a Super Mario Bros./Duck Hunt cart (which works perfectly on other systems), the titles screen shows a couple black lines up and down the left side (they run through the Mario and Duck characters when you select your games).  And after you press start for whichever title you want, the screen gets very jumbled.  Seems to be playing okay actully (judging by the sound effect), but visually broken up and jumbled.
 
The other motherboard simply won't boot a game at all.  Just gives me a still gray screen and a solid red light on the power button.
 
I did try cleaning the contacts before installing a new 72 Pin Connector on both and but still neither one would work properly.  I also tried a different pin connector, just to be sure that wasn't the problem.
 
I've looked over all the circuts on the boards and nothing seems to be loose, missing, or broken. They were a little dusty in parts, which I cleaned off with some canned air, but otherwise seemed to be in good looking shape.


If anyone knows if or how to repair these issues, I would very much appreciate your help.

Or, if anyone has one or two working NES Motherboards they can spare, I would very much like to buy them from you.  Please, message me ASAP if you do have any motherboards you'd be able to sell.  I will happily pay fair market value for them.

Thank You Kindly
« Last Edit: December 06, 2012, 12:15:37 PM by Quazimoto »
GameBoy Cassette Case Covers:  https://www.box.com/s/idqb1yyzithla11hf5bm

Various Cartridge Labels:  https://www.box.com/s/uwfwhg2n22x72cqyom6s

December 06, 2012, 11:04:45 PM
Reply #1

SnesGuy

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I would wait to hear with some on with more experience, but with how old the NES consoles are getting it could be the capacitors ?

I ran into a site that has cap kits for just about every console. Thinking about buying a bunch and just replacing caps for solder practice.

December 06, 2012, 11:09:54 PM
Reply #2

Quazimoto

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I would wait to hear with some on with more experience, but with how old the NES consoles are getting it could be the capacitors ?

I ran into a site that has cap kits for just about every console. Thinking about buying a bunch and just replacing caps for solder practice.

Thanks for the tip.  Turns out that only one of the motherboards was bad (the one with the lines through Mario and the Duck on the title screen).  The other was apparently just a faulty pin connector that I must have gotten frustrated with and not really tested with another connector after all.  I have since tested that motherboard with a different pin connector and it works great.  Tested the pin connector on another motherboard which I know works and all I get is a gray screen.  So, at least that's a bit of good news.

Using the faulty board for solder practice sound like a great idea.
GameBoy Cassette Case Covers:  https://www.box.com/s/idqb1yyzithla11hf5bm

Various Cartridge Labels:  https://www.box.com/s/uwfwhg2n22x72cqyom6s