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Originally Posted by Geoff Bourquin
I would suspect a cap in the power supply. Without seeing the set I can' t be sure, but my guess is a bad 100uf/25v electrolytic in the power supply. I remember seeing a lot of those with Daewoo printed on them. Sorry I don't remember the location number, and my service data is not with me this evening. I do remember some of them had a blob of RTV rubber against one side of the cap. Maybe that'lll help you figure out which one it is.
Hopefully Andy and I are guessing right.
Also, lets hope the CRT is OK. 18 years old, and Zenith. Thats 2 strikes.
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Every once in a while you get lucky, even with Zenith. I have a 1995 Zenith Sentry 2, 19" table model (one of the few '90s-era sets by Zenith that still used the Zenith lightning-bolt logo, as the "Z" in Zenith, on the front panel), that still works as well as the day I got it (as a birthday present for my 39th birthday in 1995). Still has its original CRT. The set was in daily use in my home at that time for four years; when I moved in 1999 I put the set in my bedroom and left it there, using it these days only to cross-check when I have problems with the cable. Other than that, the Zenith has been unused (except for two weeks while my RCA CTC185 was in for service), but I do turn the Zenith set on every now and again to be sure it still works. Last time I tried it it still worked every bit as well as when it was new. The only thing really wrong with it, if you can call this a problem, is that the silver-grayish paint on the cabinet is wearing off in spots. I don't know if this TV will last another seven years (!), but if it's gotten this far it just might make it--one can never tell.