I killed my PPU

[Pikkon]

If I replaced it my fami should work fine?

Also is there anywhere or anyone that has a spare working PPU,if not I can always try and get another working Fami.

[jpx72]

If you are sure your PPU is dead, then try contacting this guy on nesdev, he's selling some spare ones.. (I have bought stuff from him once, and I can reccommend him):
http://nesdev.parodius.com/bbs/viewtopic.php?p=85033#85033
PS he doesn't have PayPal

[Pikkon]

Thanks for the link,much appreciated.
Yea pin 21 is gone,even checked it with my multimeter as I get no reading from it.

And if I get a ppu can I just piggyback it instead of desoldering the broken one.

[jpx72]

And if I get a ppu can I just piggyback it instead of desoldering the broken one.

Well that would certainly look interresting! like a dual core famicom

[Xious]

You shouldn't piggyback it; that would be bad...

[Pikkon]

Cool,thanks for the advice.

Well I going to put trying to fix my fami on hold for now as Im getting a AV Fami.

[Xious]

The NES PPU is identical if you have any spare, otherwise nonworking NES systems laying about. As another tip, don't solder the PPU in place: Solder in a good-quality socket and use the socket to set the PPU. Be sure to use a thermally regulated desoldering tool and soldering pencil! Buy one,even with a simple analogue thermostat, as it is usually applied heat that destroys them.  

[gorgyrip]

if you broke pin 21 doesn't mean the ppu is dead. use a razor blade to scrape the ppu until you reach the pin.

[Xious]

He's not getting a signal on an oscilloscope from p.21, after overheating it, from what I read. I don't think she simply snapped the lead; it's fairly simple to solder a new lead onto the IC, so I'm guessing if he has the technical capacity to check for a video signal, then he also knows how to repair a damaged package, though I could be a few too many steps ahead. 

[Pikkon]

The leg is not broken,it looks fine but when I turn the system on with a game or not the screen is garbled.

[Xious]

That's pretty much what i expected, as it's none too hard to overheat the 2C02-series IC or to short it. If your video is garbled though, you may also have an S-RAM issue, and not a PPU issue, or another entirely different problem that relates to the two. I thought you were receiving no signal from p.21, not a corrupted signal.

What did you do to the system / mainboard that is a probably cause for this problem?