Quote:
Originally Posted by DavGoodlin
After replacing a few more electrolytic caps and the AFC diodes, no real improvement. I figure it's (the bad part) not affecting the vertical like the horiz anyway.
Attachment 201953
Then I decided to scope H-osc sync coming from the horizontal AFC diodes, it looks like the trouble may be what is coming out of the AFC network  into pin 2 of 6CG7 H-osc, also where a series RC network 12k resistor and .15mf goes to ground.
I assume this network is meant to "filter" the wave shown below.
Attachment 201954 |
W/O knowing what v scale you were set to, no way to know what P-P voltage that is, :O
The Sams says 30v on the other side of R111, so without knowing what the scope was set to, I'm assuming it's abnormally high, and the clipping at the top does no look so healthy as well.
Never having had such problems on mine, I never had to poke around there, so I;m not sure what it SHOULD look like, but I'm guessing the flat tops is abnormal.
I guess I have been lucky with my 16xl and it has behaved in that aspect, or is it that you are unlucky?
