PAL SNES having a black screen of death (Sometimes flickers green)

[DjoeN]

Lol, must be some heavy dudty wires you solder if it's that size

The most important thing when soldering -> good equipment and enviroment:
- Place to have your pcb steady and locked
- Good light
- Magnifier
- Relative steady hands
- Non agressive Flux
- Soldering iron (best are those that you can set the temperature with iron holder and sponge)
- Relative small tip (go buy a small tip online or in store)
- Desoldering bread or Desoldering pump
- Relative thin solderwire (not those thick ones)
- Descent wire to use
- Isolation tape
- Don't inhale the smoke that comes free when using flux, it's toxic

 

[Niels Van Son]

Lol, must be some heavy dudty wires you solder if it's that size

The most important thing when soldering -> good equipment and enviroment:
- Place to have your pcb steady and locked
- Good light
- Magnifier
- Relative steady hands
- Non agressive Flux
- Soldering iron (best are those that you can set the temperature with iron holder and sponge)
- Relative small tip (go buy a small tip online or in store)
- Desoldering bread or Desoldering pump
- Relative thin solderwire (not those thick ones)
- Descent wire to use
- Isolation tape
- Don't inhale the smoke that comes free when using flux, it's toxic

Thank you for the tips

 

[DjoeN]

Forgot one thing

When done, clean of the flux, some or not conductive, some are, but it's always the safest to clean it off

 

[SmileCitrus]

It sounds like this unit has a bad CPU. Before spending too much time doing mods on it, get a known good working game just to rule out the possibility that your Super Mario World cartridge is bad. Some cheap sports game would do the trick. 9 times out of 10 if you just get a black screen or garbage video on an SNES, the CPU has failed. Sure, corrosion and broken traces do cause issues, but this board looks pretty clean from your photo and doesn't look like it's had much exposure to moisture.

 

[Jack Daniels]

just checked your motherboard online, it's known to have failing capacitors when checked online...

 

[Niels Van Son]

just checked your motherboard online, it's known to have failing capacitors when checked online...

What capacitors ? Also, tried contact cleaner method, didn't work

 

[Jack Daniels]

specially C59 but the thru-hole versions are known for not lasting a long life in this motherboard. wierd to see first model snes for france is different then the one i thought was the only pal model there is.

 

[Niels Van Son]

specially C59 but the thru-hole versions are known for not lasting a long life in this motherboard. wierd to see first model snes for france is different then the one i thought was the only pal model there is.

Oh yeah the famous C59 one, appears to be fine on my motherboard though.

 

[Jack Daniels]

Oh yeah the famous C59 one, appears to be fine on my motherboard though.

okay... you should check other games...

 

[Niels Van Son]

okay... you should check other games...

yup.

 

[Niels Van Son]

yup.

Okay, so I've got another game to test out. Turns out it boots up ! BUT (Nobody likes this word heh) it boots up to graphical glitches (pixels all over the place) and after a few seconds it switches to a bunch of whites lines near the middle of the screen and the controller doesn't work at all in that place. I'm starting to give up, I've put way too much effort into this console but yeah, it might be better for my mental health to buy another one.

Still, if anyone has potential solutions, I take them, we get nothing if we don't try.

 

[Niels Van Son]

Okay, so I've got another game to test out. Turns out it boots up ! BUT (Nobody likes this word heh) it boots up to graphical glitches (pixels all over the place) and after a few seconds it switches to a bunch of whites lines near the middle of the screen and the controller doesn't work at all in that place. I'm starting to give up, I've put way too much effort into this console but yeah, it might be better for my mental health to buy another one.

Still, if anyone has potential solutions, I take them, we get nothing if we don't try.

Video that goes with that :

 

[Jack Daniels]

Video that goes with that :

tune the crystal again (there's a component next to it to fine tune it)
clean your cardridge slot contacts (by removing and inserting games that are cleaned over and over again)...
maybe you'll need to replace the cardridge slot...
could be your crystal is damaged...
got mine working today, pal snes with rf out and multi out... though the games need cleaning, it is working! the large capacitor 2200uf 25v and the diode bridge were damaged in my case, and i stil need to blug the games about 5 times in and out before it works.