croissantking
Well-known member
Thanks guys, it's a great feeling to get it sorted. The next board is going to be fully socketed, it will seriously aid in troubshooting I'm thinking.
Looking real good!My second board is coming along great. I’ve gone for PLCC sockets for ease of diagnosing bad chips. I thought I’d find them ugly, but I’m actually really pleased!
Very Nice! Where did you find the sockets for the 2 VRAM chips?View attachment 51637
My second board is coming along great. I’ve gone for PLCC sockets for ease of diagnosing bad chips. I thought I’d find them ugly, but I’m actually really pleased!
From Mouser:Very Nice! Where did you find the sockets for the 2 VRAM chips?
But your solution is just as good. Is there any advantage to gold contacts on those?I ended up cutting the mid socket supports out of a socket I had on hand, but was to narrow.
I was just what I had in my spare parts bin. Probably bought the socket because it was available when I needed one for a past project and it was all that was available. The only advantage of gold contacts (if they are gold plated), is that gold doesn't corrode.But your solution is just as good. Is there any advantage to gold contacts on those?
Whoa! My board has exactly the same problem. Question- are you using an ATX power cable extender to run the board out of the chassis? Are the symptoms the same after it has been running a bit? I have some theories but nothing solid yet.@Cam thank you! How many have you built, and how did it go for you? I think I’ve seen a bit of your YouTube content.
Board 2 has a graphical issue - based on the attached video does anyone know offhand which chip is likely to be the culprit before I start blindly swapping?
View attachment 51696
What kind of VRAM are you using on the board that does this? I think I have seen something similar and swapping the VRAM for a set of chips with faster access time solved it. Surprisingly the chips I used at first came off a donor SE/30 board so they should have been good…anyone know offhand which chip is likely to be the culprit before I start blindly swapping?
Yes, I’m using an ATX extender, and yes, the graphical glitches start after a few minutes. What are your theories?Whoa! My board has exactly the same problem. Question- are you using an ATX power cable extender to run the board out of the chassis? Are the symptoms the same after it has been running a bit? I have some theories but nothing solid yet.
@Cam thank you! How many have you built, and how did it go for you? I think I’ve seen a bit of your YouTube content.
Board 2 has a graphical issue - based on the attached video does anyone know offhand which chip is likely to be the culprit before I start blindly swapping?
I’ve replaced the VRAM with different (faster) chips and the problem is still there.My first thought was VRAM as Bolle suggested as it seems to repeat in a pattern. If it happened sporadically I'd have said its more likely an analog source - loose wire, bad connection, that kind of thing.