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Crt monitor shake

Question from Jeremy: Hi guys. Happy new year! Hope you guys have a great 2019! I’m emailing for some advice on my arcade monitor that’s having a problem. The picture will shake for a little bit then seem ok for a few seconds and then start shaking again. I’ve checked the voltage from the power supply and it’s reading 5.1 and it’s stable. Thanks.

1 answer

Jonathan Leung Jonathan Leung Staff January 14, 2019
Public

Response from Jonathan: Jeremy,

Shaking like this could be caused by a number of issues but almost all of them involve the monitor chassis. Our first recommendation would be to take out the monitor chassis and touch up any cold, cracked, and/or broken solder joints. You might want to pay special attention to the input pins where the signal comes in from the board. The solder joints on these pins tend to crack over time from all of the unplugging/plugging in of the video connector. Of course, it’s not a bad idea to go ahead an install a cap kit on your monitor as well while you have the chassis out.

If the problem continues after a solder touch up (and possible cap kit installation), then it could be an issues with the power supply section of your monitor chassis. At this point, measure your B+ voltage and see if it’s in range. You may need to turn it up just a bit to help with the stability of the image. You can also try the horizontal/vertical frequency (sometimes called sync) and hold adjustments as they can also cause this issue if not dialed in properly.

Hope that helps. Thank you for your question and good luck with your repair.

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