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"Fixed" 39k7600 issue, Screen is beautiful but fades dims out 10 minutes later
Customcade:
Final example
grantspain:
you would need to monitor the hv and b+ to prove whats going on
that is just factory glue around those caps
the sort of fault you describe is more likely bad solder joint and i would look in particular around crt socket and rgb input but in general the entire chassis should be investigated
i don't have any experience with this size tube but from previous readings I have seen known issues with 39" tubes and failure similar to this
buttersoft:
i had a bad solder joint like than on the neckboard connection for the G2 that made the screen slowly go dim, but it was like a thermostat, and kept fading in and out about once a minute.
Customcade:
--- Quote from: buttersoft on February 11, 2023, 06:04:03 am ---i had a bad solder joint like than on the neckboard connection for the G2 that made the screen slowly go dim, but it was like a thermostat, and kept fading in and out about once a minute.
--- End quote ---
That's what this is doing, it's acting like a heater issue.
I checked the back side of the neck board and looks good but will just have to pull the main PCB and look them over again.
I was just hoping to fix it without having to pull it out again.
grantspain:
next time it happens increase the screen volts on the flyback to see if you obtain a raster, that will eliminate a load of issues