Snes repair FAQ (work in progress)

[UnInformer]

This is not so much a repair question....but what would be a good tool to use for getting rid of the two plastic tabs that block Japanese carts on North American systems?

[MrKitt]

a carpentknife

[phreak97]

Because pal snes consoles run off AC, they have a bridge rectifier in them, if you run a pal snes on dc (to avoid the resetting via rgb) you can burn out the rectifier. maybe attack the problem when you come to it, it's good to keep there incase someone plugs in AC without realizing, but if your snes stops working for some reason after running on dc, check the 4 legged black cylindrical component under the metal heat sink. you can replace it with two bits of wire, but if you do, you must NEVER plug in AC again.

to kill the tabs in the cart slot: you can use a carpenters tool of some kind like stated above, you can stick some strong long nose plyers down there and just snap them off, you can use some heavy duty wire cutters to attack them, you can use an x-acto (or whatever) knife and carve them away, you can even (not at all recommended) melt them away with a soldering iron.

[MrKitt]

well actually its a small geizerbridge and geizerbridges are made to filter AC to DC but if you input DC on its inputs nothing happens since no Sinus voltages are corrected from negative to possitive values. Please note that this is not a design flaw (the galvanic seperation happens in the AC/AC transformer also known as Electron magnetic conductance ) its a programming flaw made by gameprogrammers witch causes games to reset the snes.

[Wonder_Hamster]

Here's a question for you:

How come my SNES will not display video? It shows a blank screen while I hear the audio just fine. I tried with A/V cables and an RF adaptor and it did the same thing. I even made sure it displayed fine with my working SNES to make sure everything was right with my TV. You know anything I can do about this?

[MrKitt]

its probably some sort of short on the PPU2 or its busted.

ive had this error on some sneses but i havent cracked where the error is yet.. if you have an oscillioscope you can check the rgb generatator pins on the PPU2 if you get signals there its not the ppu but probably one of the million transistors on the backside of the pcb