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 Post subject: Re: fc twin no power
PostPosted: Fri Mar 20, 2015 7:57 pm 
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Location: Indianapolis
Looking at a Google image search for "FC Twin PCB" shows a board with 2 TO220 packages (the usual 7805 package in NES and clones) next to eachother, maybe it's another regulator for the SNES section of the board? With there being 2 of them, I wouldn't assume the second is a 7805, that would seem kinda.. odd. Can you read the part number on it?


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 Post subject: Re: fc twin no power
PostPosted: Wed Mar 25, 2015 10:08 am 
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The snes part is getting power anyway when it's on I see the screen change and when I hit reset it flickers. Just won't boot a game though yet the nes section works perfectly.


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 Post subject: Re: fc twin no power
PostPosted: Fri Mar 27, 2015 6:16 pm 
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Trace out the unregulated voltage and see if goes to something else on the board. If that's what killed the 7805, then it's probably blown up anything else that uses it too.


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 Post subject: Re: fc twin no power
PostPosted: Tue Feb 07, 2017 4:03 pm 
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Hi again. I know this was a long time ago but I just dug out the same fc twin and I'm gonna have another go at trying to fix it. Mainly for the super game boy since gameboy is 60hz so running it on the pal snes has judder. What should I be looking for?

I have a multimeter and it's not great but I don't mind buying a better one if I need to.

I uploaded a picture of the board I have. The 3 pins where the regulator used to be just has the 2 positives connected with the red cable under the board. There used to be a 7805 there and a big L shaped piece of metal presumably as a heatsink.

Also the unregulated voltage doesn't seem to go anywhere else.

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