warmachine
New member
Hi.
This is a continuation of a post I made on the BYOAC forum, but it's down right now
so I've come here to grovel for some assistance.
Anyway, It started when I ordered the chassis from 8liners.
I didn't have an isolation transformer at the time, but I decided to try
it out anyway.
It worked fine for a couple of hours, but eventually the vertical part of the video
signal collapsed into a single horizontal line running across the center of the tube.
Ken Layton pointed me toward the LA7833 IC.
I replaced it but it didn't fix the problem.
Just this morning, I found a scorch mark on one of the traces on the underside
of the chassis.
It seems like there may have been a jumper running from that trace to
the solder blob that both R803 and D806 are connected to.
I can't be sure of that because I can't find a schematic for this chassis.
Anyone have one that I could take a peek at?
This is a continuation of a post I made on the BYOAC forum, but it's down right now
so I've come here to grovel for some assistance.
Anyway, It started when I ordered the chassis from 8liners.
I didn't have an isolation transformer at the time, but I decided to try
it out anyway.
It worked fine for a couple of hours, but eventually the vertical part of the video
signal collapsed into a single horizontal line running across the center of the tube.
Ken Layton pointed me toward the LA7833 IC.
I replaced it but it didn't fix the problem.
Just this morning, I found a scorch mark on one of the traces on the underside
of the chassis.
It seems like there may have been a jumper running from that trace to
the solder blob that both R803 and D806 are connected to.
I can't be sure of that because I can't find a schematic for this chassis.
Anyone have one that I could take a peek at?