Hey I have two SNES's that are not working properly
* one has issues with rotation/scaling other PPU-related issues, but otherwise loads and plays games properly
* the other will load only a "black screen" when the power is applied, and sometimes some graphical garbage for different carts.
My question is whether there is any documentation about what happens when the SNES boots up or documentation about what chips do what (ie which PPU chip handles rotation and scaling).
Is there anything I can do for the motherboard to verify what is working besides looking for bulging caps and checking continuity? (I have a few other working systems so I can test adapters/av cables/cartridge slots/working SPC module for older systems). For example how could I check an SPC module besides testing it on another working system?
I have seen working SNES consoles (no wires etc) going on ebay for ~$30/$40 so at this point I am probably going in that direction, but I am interested in trying smd soldering and maybe trying to get these systems to work. I figure if I can't get it to function I can salvage the working components like the cartridge ports or the sound module, the controller port, etc.
* one has issues with rotation/scaling other PPU-related issues, but otherwise loads and plays games properly
* the other will load only a "black screen" when the power is applied, and sometimes some graphical garbage for different carts.
My question is whether there is any documentation about what happens when the SNES boots up or documentation about what chips do what (ie which PPU chip handles rotation and scaling).
Is there anything I can do for the motherboard to verify what is working besides looking for bulging caps and checking continuity? (I have a few other working systems so I can test adapters/av cables/cartridge slots/working SPC module for older systems). For example how could I check an SPC module besides testing it on another working system?
I have seen working SNES consoles (no wires etc) going on ebay for ~$30/$40 so at this point I am probably going in that direction, but I am interested in trying smd soldering and maybe trying to get these systems to work. I figure if I can't get it to function I can salvage the working components like the cartridge ports or the sound module, the controller port, etc.