Hi. Got a Mits WS-55907 here. Odd problem if they are linked somehow, otherwise 2 separate problems.
Anyway, first off, I will replace the convergence STK392-570 chips, as I have good power to them.
Now for the odd part - no video, but does show the closed caption speech. Also, no access to menu, just goes blank raster. Video good at rear jack panel, but doesn't get to video drive transistors.
I did solder up rear jack panel and board connectors, which often fixes no video, but not this one.
I did clean a bit of tube oil from signal board, but it appeared none had traveled to or under any chips, was a small localised spot. Cleaned with alcohol. No effect on video.
I have tube set and board set sprawled out on bench so I can run them up, and find no missing voltages. All look clean, no grass or waving. Just this oddity of no video.
I can give more details of voltages and such if needed, just wondering if anyone else has seen this, are the two problems linked, or 2 separate problems. Guy didn't say anything about convergence when I arrived, although I noticed it right away. He just said video faded away.
Thanks in advance, Danny