#1
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1988 Emerson 19" model ECR2100D dead
Set powered on as soon as I plugged in. Started up and showed digital channel display and screen lit up with the usual static. Ran for about 10 seconds and shut off on its own. I then unplugged it and heard a relay. Since then, nothing.
Last edited by pac.attack76; 04-19-2024 at 09:18 AM. |
#2
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Maybe bad regulator.
I would try on variac maybe 90v in ch b+. I assume safety circuit shut it down |
#3
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I don't have a variac.
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#4
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I find good buys at fleamarkets at hamfests
I find one coming up in your state maybe more https://www.arrl.org/hamfests/search Sometimes on shopgoodwill.com you can find good deals. If its at your local hub U could pu locally save shipping |
#5
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Quote:
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Audiokarma |
#6
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Normally the regulator is at the mains wiring input, after fuse, diodes and big cap for filtering; then it follows to regulator. It drives an transformer or a inductor (if it is a SMPS; probably due to age of this TV). THe main regulator for sure will have a heatsink.
For testing it, is not advised to isolate them from load; most old SMPS explodes without load.
__________________
So many projects, so little time... |
#7
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Look for a 100 k ohm IIRC off the B+ adjust pot.
Would restart but randomly go HVSD. A $1 test ! Zeno |
#8
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I'll look and get back to you.
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#9
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I was always afraid to put a solid state on variac as I was told it could damage the set. Also my variac is modern one I got off Amazon its not the best but it works.
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