So... I was vindicated in holding off on fault find index. ![:D]( "Very Happy")
Experienced some crashes last night on what was quite a warm evening. Was 26+ upstairs. I've just received my Gotek, and so I had left beeb on at elite load screen. A few hours later and it was a ftozen and slightly corrupted screen.
My Wera chip lever has since arrived, so armed with this and Mark's great advice, I was more confident about pulling, cleaning and resocketing all the other socketed chips. I also replaced ic14 as i have a stash of TI branded spares for those too.
Although, likely not needed, I had a spare 28pin size heatsink, so I added that to the vidproc.
I set the machine running the following morning - another 25+ day - and experienced a crash after around three hours. I reset the machine with the lid on and it crashed again within about 20 minutes.
With the machine still hot, I decided to replace sy6502a with a um version.
It ran for quite a bit longer in this hot state with a new CPU, but after just checking, it looks like things are still not 100%.
See below.I think I'm good to try tricky's test rom now as pulling the OS will be less scary with new skills and tools. I can also replace original roms with eeproms if the masked originals might be the cause. The pins and sockets for these look pretty good
But it does feel like it might be temperature related.And that something is not very happy with a high temperature inside the case. I'll run with lid off and see hiw much dufference it makes.
Tapping the board in corners ir pessing down on chips does not repoduce the error.
So one last question: how hot should the power supply reasonably get? When it has been on for a while, the metal cover of my supply is not easy to press your finger against for more than a few seconds. It feels like vidproc level temperature. Is that normal? I do wonder if the supply when hot is occasionally glitching out.
I'll wait for it to crash with lid off and - if it doesn't wi5hin four or five hours, I'll install a test rom and put the lid back on!
Experienced some crashes last night on what was quite a warm evening. Was 26+ upstairs. I've just received my Gotek, and so I had left beeb on at elite load screen. A few hours later and it was a ftozen and slightly corrupted screen.
My Wera chip lever has since arrived, so armed with this and Mark's great advice, I was more confident about pulling, cleaning and resocketing all the other socketed chips. I also replaced ic14 as i have a stash of TI branded spares for those too.
Although, likely not needed, I had a spare 28pin size heatsink, so I added that to the vidproc.
I set the machine running the following morning - another 25+ day - and experienced a crash after around three hours. I reset the machine with the lid on and it crashed again within about 20 minutes.
With the machine still hot, I decided to replace sy6502a with a um version.
It ran for quite a bit longer in this hot state with a new CPU, but after just checking, it looks like things are still not 100%.
See below.I think I'm good to try tricky's test rom now as pulling the OS will be less scary with new skills and tools. I can also replace original roms with eeproms if the masked originals might be the cause. The pins and sockets for these look pretty good
But it does feel like it might be temperature related.And that something is not very happy with a high temperature inside the case. I'll run with lid off and see hiw much dufference it makes.
Tapping the board in corners ir pessing down on chips does not repoduce the error.
So one last question: how hot should the power supply reasonably get? When it has been on for a while, the metal cover of my supply is not easy to press your finger against for more than a few seconds. It feels like vidproc level temperature. Is that normal? I do wonder if the supply when hot is occasionally glitching out.
I'll wait for it to crash with lid off and - if it doesn't wi5hin four or five hours, I'll install a test rom and put the lid back on!
Statistics: Posted by geords71 — Sat Jan 25, 2025 2:01 am