RCA 27V520T question/problem

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diagrah
RCA 27V520T question/problem

Hi there.

I guess it's my turn to ask 'the same old question', though I've read through pages and pages of questions and solutions without finding what I need.

Here's the tv info: RCA Model 27V520T, Chassis M134C, SN F093CC0FZ, Service No. 27V520TYX1, Manufactured March 2005.

The background: Bought a new house and moved in. Excitedly installed my noisemakers so I would have entertainment while I got to know the new house.  TV, surround sound, DVD player and satellite box were plugged into the same surge protector. TV, satellite box and surround sound died (at the time, I didn't know why) but DVD player was fine. Brought older Magnavox tv to the room, got a new satellite box and plugged these into surge protector (DVD player still on same unit). Left the house for a bit, came back and tv & satellite box were dead. DVD player still fine. The surge protector was not tripped in either instance. I called the electric company to come out. The guy tested the meter, which was fine, then checked out the connection from the pole to the house and discovered the ground wire was broken and said the electronics were most likely fried when the wire touched in the wind. He repaired the ground wire and life went on - a bit quietly since both tvs were dead.

Out of curiosity, figuring they were worthless so I couldn't harm any of the electronics, I started looking at the units. The first thing I found was that the fuses were blown on all three pieces (the satellite boxes had been returned to the company and replaced by another). I replaced fuses on everything. The Magnavox is now working fine, as is the surround sound system. The RCA tv, however, is not cooperating. I plugged it into an outlet rather than a surge protector, and the new fuse was immediately blown. Both the old and new fuses are black inside the tube. I can see nothing else out of the ordinary. The resistors, diodes, board...all look fine to my untrained eye. What am I missing? I have a passing familiarity with circuit boards - a million years ago, I worked in the aerospace field, in the PWB facility, but as I said, that was a million years ago and a ton of brain cells have left me for all time, including many of the ones I used back then.

Sorry I was so long-winded. I figured the more info, the better chance of finding a solution. Any suggestions?

Thanks! diagrah

ctmklm
if fuse blows immediately 

if fuse blows immediately  your bridge rectifier is shorted. this is an easy fix if you know what your doing. first you will need a meter with a diode check. there should be four diodes after the fuse.check them with your meter. two of them will be dead shorted they need to be replaced.but make sure you know what your doing...

 

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