wg 27k7391 help

dirt

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i just picked up a point blank and this is what the screen looks like.
click pictue for video


what would be causing this problem. the picture looks worse in person than it does on the video.
 
Hey Ken. I just double checked and it is a 27k7391 for sure. It has the little board mounted vertical in the middle of the chassis on the right side.
 
  • Double-check video connections from PCB to monitor. Almost looks like your video ground is flaky, and you're missing blue which could be a connection issue too.
  • Swap the CDTs around. Do you have blue now? Replace the CDT on the color that now doesn't work.
  • Once you for sure have all three guns firing, pop into test mode, color bars, start by turning the green bias way the hell down then tweak until all the colors look about the same brightness.
  • If you haven't already, capkit. Especially in the horizontal deflection section.
 
Last edited:
Color Drive Transistors...
thanks modessitt. is there a chance those are the problem with the sync to or they only effect the color. im thinking just the color but im just learning and want to make sure.

i just ran a jumper from the pcb to the chassis from the vgnd on the edge to the gnd on the chassis and it made no difference at all in the picture.
 
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