Super Famicom video issue

I had a video problem some months ago (NTSC SNES). The problem was not like that... I had some waves in the image even using a scart cable.

My solution in the end was replace the 7805 voltage regulator.
If you try everything without success, maybe you could try it as a last hope.

 

Aware of any other examples of electronic parts dying in numbers far too soon?

 

I'm aware of those 2 chips. SNES CPU and very early PSX SPU. The SPU is so rare though, you have to look for it.

 

Mine is a S-ENC 9302 (pic).
I'll try finding another encoder and regulator as suggested. Thank you all for the help, it keeps me from giving up on this

 

I've replaced a few first revision spus too.

As have a few people on this forum.

https://assemblergames.com/threads/dtl-h1002-playstation-sound-issue-bad-caps.63860/

https://assemblergames.com/threads/demonic-audio-from-scph-1000-ps1.59662/

 

If caps in the SNES seem to be routinely going bad, could that be accelerating these premature chip failures? Could be a decent case for preventive recapping of consoles that still do work ok.

 

Yea. It's just too bad there's no information on what they changed on each revision.
There's a bit for SNES chips (CPU only, I think), but for PSX, all I know is that the later SPU chip can be used as a drop-in replacement for the earlier one.

 

Bad caps can be a factor but I don't think it's a big one. The reason is that all the ICs in the SNES are fed from an 7805 linear regulator.
Even with bad caps, the regulator should never overvolt the ICs.
For SNES failures, I'd rather recommend not connecting any weird controllers. The controller data lines go directly to the CPU!