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Update:
Got all of the electrolytics swapped out with Panasonic or Nichicon low ESR caps. Did not RTV them in place as was originally done on the board because I wanted to make sure it powered on without issues from the cap replacement. Also, re-flowed two solder connections on two transistors that had visually questionable solder joints. One of the transistors was near the Main Board output connector. Successful powered up. Installed the back cover and ran the panel for three hours last Saturday night. Ran it for one hour Sunday night and two hours on Monday night. Is working fine so far. Time will tell if the cap replacement and re-flowing the transistor solder connections have fixed the shutdown problem.
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Right is right and wrong is anybody's guess!
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06-20-2018, 02:36 PM
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