Hi, I have this issue, can anyone help me?
I change all caps, and the problem still there
I change the VA1 and nothing happend
https://youtu.be/ueK9pKLF02w
I turn on (led indicator works)....since a while, It looks a black screen, and then nothing.....and the led indicator is still on
SNES won't turn on 2
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Re: SNES won't turn on 2
I've heard that most of the time the cause of the SNES' black screen is related to problems on the CPU or WRAM.
It's good if you can get a test cartrige and try to run it.
But depending on how bad the CPU/WRAM is it won't even boot.
Would be possible to disable the onboard WRAM and piggyback an SRAM, just so it can try to boot the test cartridge?
It's good if you can get a test cartrige and try to run it.
But depending on how bad the CPU/WRAM is it won't even boot.
Would be possible to disable the onboard WRAM and piggyback an SRAM, just so it can try to boot the test cartridge?
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Re: SNES won't turn on 2
Sorry, but how can I disable the WRAM? there's any guide around there?
Re: SNES won't turn on 2
wram=work ram. how the console will "work" if you disable it?
I have never seen a dead wram. Most of the time is the cpu. Very rarely it's a broken trace.
I have never seen a dead wram. Most of the time is the cpu. Very rarely it's a broken trace.
Re: SNES won't turn on 2
According to these logs WRAM is the second most common cause of non-booting SNES-like systems.
The suggested test I have in mind is to pull up the enable pin of the chip so it won't be enabled and piggyback another one for testing.
If there's a quick way of doing this it will become a nice time saver for non-booting SNESes.
Or there's a better way to figure it out with a scope or logic analyzer?
The suggested test I have in mind is to pull up the enable pin of the chip so it won't be enabled and piggyback another one for testing.
If there's a quick way of doing this it will become a nice time saver for non-booting SNESes.
Or there's a better way to figure it out with a scope or logic analyzer?
Re: SNES won't turn on 2
I think my take-away from helping diagnose poot36's SNES is that unless you have a pool of multiple SNESes with failures, and a hot-air rework station, it's just too hard to fix most failures, so it's not worth it to do more than cursory testing (i.e. vreg, fuse, CIC)