greniu's latest activity

Hi Dave, Thanks for quick answer.On the video you can see text shaking a little (pulsing). It is normal? Maybe I'm looking for...

hello. Does anyone have any suggestions?Thanks

Hi Dave, Thank you for all advices. I really appreciate. I apologize for not answering. I was on holidays, so I had no time to make...

Hi Dave, AD. 1. You are right I connected ground probe clip to PCB ground. Do you have any other ideas what to check? Is there any...

Some new measurements: 1.AC voltage across CR19,CR21 (before rectification): 2.DC voltage across CR19,CR21 (after rectification) and...

I also did 3 tests to check magnetic interference dependency, because something was not clear to me. The results really confused me and...

I have measured DC voltage across C17. This is how it looks like. Is it normal?

hi Dave, I have swapped R20 potentiometer and no change. I will look for other advices.thanks

Hi Dave, Thanks and very appreciate any advices. So do you think that changing this R20 will not help with text wobbling? When I was...

hello. I think I have found a root cause. This is R20 (1 M ohm) on schematic. Does anyone know the replacement or the part name to find...

hi Dave - videoboard in my case is monitor PCB. I will try to re-solder those joints and do a measurements. Any other ideas what I...

hello, I recapped videoboard today. No difference. I have noticed that when I move VDU further away the PET I see only first line...

Hi. This is video from PET CRT (attached). The text shakes.I haven’t recaped it yet.

This is very strange. I used "Auto Calibrate Video Sampling" in RgbToHDMI device menu and I can see static picture now! So sampling...

hello, Here is recording from the captured picture.