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Toshiba 27A32 Ch. M3L571 dead after power surge    
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mykaelyn



Joined: 21 Jan 2009
Posts: 1

PostPosted: Wed Jan 21, 2009 9:39 am    Post subject: Toshiba 27A32 Ch. M3L571 dead after power surge Reply with quote

A power surge killed my tv, computer and Xbox 360. Turned out to be the power supply box on the computer, and the power brick on the Xbox 360. I opened up the tv, and saw the fuse was blown. I didn't notice any other burnt spots on the circut board. I replaced the fuse, but as soon as I plugged the tv back in, it blew again. I have no clue what to do next. If someone could help me out (in a tv repair for dummies sort of way, since I have NO clue what I'm looking at back there, other than the fuse) I would greatly apreciate it. This was my kids tv, and as fond as I am of Handy Manny, I'd love to be able to watch grown up shows once in awhile! Thanks in advance!
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Jesse Mack



Joined: 22 May 2008
Posts: 600
Location: The Last Frontier

PostPosted: Wed Jan 21, 2009 11:49 am    Post subject: Reply with quote

For this you will need a multimeter that can measure resistance. Check Diodes D501~D504 and or Diodes D527,D529,D530 and D531. These are the bridge rectifiers and the ones that fail during a power surge that will cause the fuse to blow instantly.

Location is: Looking in from the back, Power cord input, Fuse, Square xfrmr/coil, left to diodes (away from right edge of circuit board).

Hope this helps

Jesse
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