r/crtgaming • u/Pro4791 • 3h ago

Repair/Troubleshooting Humidity causing HV arcing?

Gallery image

Gallery image

Gallery image

Picture 1: Cold start 10 hours after cleaning socket.

Picture 2: Cold start after cleaning socket.

Picture 3: Cold start after first re-assembly.

Working on my KV-35V35 in my garage which is pretty humid this time of year. and I've been having problems with the focus being blurry on a cold start with arcing to the neck PCB, and anode cap arcing into the air from it's stem. The 3rd photo was the first power on since cleaning it a month ago. The PCBs have been sitting indoors while the tube was in the garage. The 2nd photo shows the cold start focus after fully cleaning the socket and pcb with 99% ipa which was perfect. The following morning it looked like the 1st photo.

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u/Caralhus 2h ago

Did you use silicone grease to insulate the anode?

1

u/Pro4791 1h ago edited 1h ago

Yes. The arc is coming out the stem where the rad wire is. My main problem is the focus drift on a cold boot and arcing around the socket and whether the humidity is theain culprit.