Question about Mitsubishi VS-5043/44 50" Rear Projection Television

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Rear Projection 40PW03B

This T.V is 6 years old, the problem started when it switched itself off after a while of being on, now it won't switch on at all.

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Hi Solaron,
I've tried replacing the 5A fuse but that didn't have any effect.
How should I go about fixing the switching transformer?

Posted on Jan 09, 2008

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I found that the main 5A fuse was blown. After replacing it, the set worked for about 1/2 hour and the problem really was the "switching transformer had a shorted winding.

Posted on Dec 16, 2007

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1 Answer

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mas_baz_20.jpg
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1. Short out door switch (SP001)
2. Apply AC power and wait till DM module boots
3. Press power switch and observe spark gap on ballast
4. If spark gap arcs, suspect Lamp. If color wheel starts but ballast won’t strike
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Note: Lamp may arc but not start. Pin 5 of BT251 is "LAMP LIT" and goes to 1.48V
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