Question about Sony Grand WEGA KDF55E2000 55" Projection HDTV

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Replacing Thermal Fuse in Sony Grand Wega KDF-E55A20

I had the same problem of the power light blinking red six times and saw how you fixed the problem by replacing the thermal fuse.

I have now ordered the new thermal fuse from Sony and in preperation, have removed the bulb through the front and the rear access panel and fan.

It looks to me that to remove the old thermal fuse, I need to remove two screws. But there is only about an inch or so clearance above the two screws, so I do not see how I will be able to remove the old one. Do I need to remove the old one? If so, how were you able to remove the old one?

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  • Anonymous Jan 13, 2009

    how to install thermal fuse

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Blinking red power light 6 times. Tv picture goes on and off. Then the red lamp light came on? Now nothing.

Posted on Jan 19, 2010

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The PROPER way to replace the thermal fuse is to remove the optical block first. There are at least two recessed screws holding the block in place. BE VERY CAREFUL removing the block as it is very easy to tear/rip wires when doing so. I cannot emphasize enough NOT TO JUST THROW THE NEW THERMAL FUSE INSIDE THE CABINET!!!! The thermal fuse is a safety device mounted near the lamp to prevent overheating. Those that choose to just let the fuse "sit out in the open air" are risking greater failures and the possibility of fire.

Posted on Oct 19, 2008

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1 Answer

Why is power application erratic?


That is a Thermal Fuse. IT is behind the area where the lamp is. How to change the thermal fuse on sony kdf e60a20

This video is for a different model but its the same idea as yours.

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SONY : kdf-42e2000, kdf-50e2000, kdf-55e2000,la-4 chassis : 6 blinks no main relay, replace thermal fuse on lamp housing."
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My Sony Grand Wega KDF-E55A20 will not turn on with the remote or manually. The red light flashes 6 times then off.


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The power red light keeps flashing six times


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The TV needs to be opened up and the boards checked. You may be lucky and only need a thermal fuse. Also check your bulb.


I hope this helps.

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1 Answer

No picture no sound


6 blinks = power supply error
on this model, a thermal fuse under the lamp will blow for no reason causing this issue. it can be fixed with a new thermal fuse or just a wire will bypass the fuse. remember if you bypass then you've eliminated your fire safegard. the fuse is usually big and metal and will check open with an ohm meter. to get it out, you have to pull the engine and remove the tray piece its attached to. complicated procedure, let me know if you need it. the newer type fuse (non-defective)is like $15 from sony i believe. if you complain to sony they may cover the cost as this is happening to many tvs

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