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Old 03-04-2023, 09:38 AM
liammc00's Avatar
liammc00 liammc00 is offline
real TVs have a CRT
 
Join Date: Jun 2018
Location: Belpre, Ohio
Posts: 269
I put in the new transistor to replace the one I broke the lead off of. Truned on the set and it powerd on. I could hear arching and in the past I just thought it was static electricity from first turning on the TV as arching quites after little bit of time. Now I know that is not the case as I paid closer attention. Noticed with volume truned all the way down to element that static as it will over shadow the pops and snaps coming from the speaker. After about a minute it stopped like it normally dose. Still thinking it might be temperature related I tired using freeze spray and that did nothing set still worked as intended.

So I believe now that the protection circuitry is working as intended. Something is arcing and sometimes it arcs bad enough to trigger the protection circuitry to shutdown the set. After a while the arcing gets less server so the set stays on but still arcs a little bit. After a while it quits arching completely and the set will run fine. You can turn the set off and come back to set with in hour and trun the TV on. It will come on and not arc at all.

I do know that arcing is coming from something internally as I have tried looking at the set in pich dark and could not see it arching at all nor do I see any carbon or burn marks were something has been arching. I do know it's coming from the right side of the main board. It could be the flyback but I thought if that was the case the set would have failed in very short order. I have worked on this set off and on for hours apon hours over many months. So before I button up the set and move on to other projects. I will take a better video of the porblem for you tube I doubt it will so anything new. If I come up with anything new I will return to this set.

Last edited by liammc00; 03-05-2023 at 10:18 AM.
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