Have another k7000, no colors. Very similar image to this thread I did a while back:
Basically as you can see, we have deflection and image, just no colors. Chassis is fully rebuilt; caps, reflow, bad areas, etc. tried IC1 and IC2. No help. If I short a neck transistor, we get colors, so I assume everything is fine there
The previous threads issue was corroded input headers causing resistance on the RGB signal. This seems so similar, but the header on this chassis is fine.
Any ideas?
K7000 No colors
Have been working on a troubled K7000. Was proud to have come this far without help, but here we are. Just to recap: Ran through @zenomorp 's standard test suite. Found several issues. Blown Fuse Blown HOT Open R91 Broken Contrast POT Repaired outstanding issues, passed lightbulb test...
forums.arcade-museum.com
Basically as you can see, we have deflection and image, just no colors. Chassis is fully rebuilt; caps, reflow, bad areas, etc. tried IC1 and IC2. No help. If I short a neck transistor, we get colors, so I assume everything is fine there
The previous threads issue was corroded input headers causing resistance on the RGB signal. This seems so similar, but the header on this chassis is fine.
Any ideas?



