- IMG_2140.JPG (119.32 KiB) Viewed 7676 times
Lo and behold...
- IMG_2141.JPG (71.96 KiB) Viewed 7676 times
It is still running down and just passed 31 ram test cycles..
So I think this is still the socket problems
It is difficult to test the connection in between CPU and the socket itself. I did try testing the power rails as there is more than one connection on the CPU, and this seemed fine. So would assume all the pins would be fine as well, but it seems not
all the sockets I use previously all seem to be basically fine, so I doubt this would affect any kits currently on sale in my store such as the STE booster.. Problem with sockets only seems to be more recently when I ran out of sockets during the last batch of STE boosters. I emailed the company who claims to have invented the PLCC socket in 1965 or something.. And ask them about this issue.. So far no reply.. But then again it could be due to the holiday break..
But I think it really does not matter, I think the conclusion is that much just forget totally using PLCC sockets for the processor at least. For older chips like the blitter etc, there is unlikely to be issues with those. I never really had problems with older chips and sockets of any kind as previously mentioned in my socket thread. But I think the time is here to totally avoid using them in any new booster builds..
... And this means yet again, I have to design yet another booster PCB before I can continue with this work any more
so I think I'm just going to abandon this series totally now.
