1990 Zenith Sentry SS2505TR

[radiotvnut]

Originally Posted by bgadow

Coincidence! Sunday I was given a Sentry 2 console from '92. I don't recall the chassis # off the top of my head but it is very similiar in build. The owner said it had become intermittent, and would work if slapped hard. It was dead to me; found a blown fuse. I am concentrating on the area around that largest capacitor; to the left there is a transistor and mine, no lie, is blown apart! Half of it is missing. There is a small resistor adjacent which looks a little crisp. My thought is to replace that cap and the resistor/transistor-but I'm not sure if I want to bother with it. I will certainly have to give this TV away even if it works perfectly. AUdubon, if I was in your neighborhood this would be a third set for you to use! Anyway, I'll follow this thread and see what I can garner from it.

I suspect that the intermittent problem was a shorting picture tube. I suspect that the STR53013 regulator is shorted along with the blown apart transistor and smoked resistors. You'd probably be better off to toss this one. I used to get a lot of these sets from the local Zenith dealer with these parts blown. I'd replace them just to sell the set and have it come back in a week with the parts blown again due to an arcing or shorted CRT. And, those CRT's usually will not check shorted on a CRT tester. I just finally got to the point where when a Zenith came in with those parts blown, it went straight to the trash.