PVM retracing lines remain after full recapping

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kamillebidan
Posts: 29
Joined: Fri Feb 15, 2013 4:03 pm

PVM retracing lines remain after full recapping

Post by kamillebidan »

I have a sony PVM-204M
All of the sudden, the retracing lines appeared at the top of the screen.
I replaced C-572 and C-584. No effect. I recapped all the main board (A), the neck board (C) and the power supply board (G), but that didn't change anything. For all the caps, I used nichicon 105deg, long life caps. If I adjust v-blanking, I can bring the image up, but even 255 is not enough.
I ESR checked all the removed caps, they were all fine.

Did anyone have the same problem?
XtraSmiley
Posts: 622
Joined: Fri Apr 20, 2018 9:22 am
Location: Washigton DC

Re: PVM retracing lines remain after full recapping

Post by XtraSmiley »

Can you post a picture of the problem?
kamillebidan
Posts: 29
Joined: Fri Feb 15, 2013 4:03 pm

Re: PVM retracing lines remain after full recapping

Post by kamillebidan »

kamillebidan
Posts: 29
Joined: Fri Feb 15, 2013 4:03 pm

Re: PVM retracing lines remain after full recapping

Post by kamillebidan »

I noticed one strange thing. The menu seems to be shifted, but the signal not so much.
See the attached picture.
The top pictures show the monoscope, and the menu, with underscan.
The bottom pictures show the same things, without underscan.

As you can see, the top of the image is replaced by the retracing lines.
https://ibb.co/GvfqHGn
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