Color Classic cropped screen and boot issues

[kahlil88]

Finally got a working CCII board for my CC and recapped the analog board for good measure. Recap went smoothly and everything was still working. Monitor had a purple tint before and after so the next step was to adjust the rear pots. I got a little ahead of myself and replaced the battery holder with a CR2032 style, which is where things took a turn for the worse. I wasn't getting video and swapped the board in and out several times to troubleshoot and broke a tantalum capacitor off the bottom. Fast forward a few days, I replaced the capacitor and same issue. I suspected the new battery holder was shorting against nearby traces that are super close to the solder points and re-installed it with strategic kapton tape on the board. Seemed to work more consistently but after a few power cycles, the image is cropped... like cut into 3 sections stacked over each other in the center.

 

[chiptripper]

Since you did work on both LB and AB, it's probably best to try and isolate the problem. Do you have the original CC board to test with?

 

[kahlil88]

Unfortunately not. I traded the original board along with another dead CC for this board. Strangely enough the screen was normal when I powered it on an hour later. Maybe it's other AB components getting hot?

 

[techknight]

Did you resolder everything on the analog board? that is a very well known weak point for the CC

 

[kahlil88]

Did you resolder everything on the analog board? that is a very well known weak point for the CC

I re-flowed a few odd joints but mostly stuck to re-capping.