Question about Sony KDF-E55A20 55 in. LCD Television

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Were is the thermal fuse on a sony KDF E55A20

I have the back cover off and found a plug above the lamp housing, but the wires go in the side of the housing and I can't id them.Is the old fuse in the lamp housing?

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The CORRECT way to replace the thermal fuse is to pull the optical block out so you can get to the thermal fuse mounting plate. I would NOT suggest just letting it "float out in the open cool air" as some have suggested as this is a safety part and not installing properly could be a safety hazard

Posted on Oct 18, 2008


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Getting an error code 5 flashes tv powers up but no picture

I would have to check but that may and is likely the thermal fuse from the lamp to the power supply-----common issue and Sony was replacing them with a different one.

The simple test (for me) is with rear cover off look at the plastic housing for the lamp---the fuse is there but hard to see---two wires wind up and under that and enter the main wire harness going to the left (as seen from rear)--if can follow them about the middle of the set in back they connect to a 2 pin plug----with plug unsnapped read across the two wires going back to lamp housing---no reading across them and the fuse is gone.

The replacement is different looking.

What if I find this I have been known to do is jump the plug on the side going to the power supply(not the lamp side) just to see if set will now work-----not seen one where there was a short but just a poorly designed fuse.

Nov 07, 2012 | Sony Grand WEGA KDF-60WF655 60" Rear...

1 Answer

My Sony Grand Wega KDF-E55A20 will not turn on with the remote or manually. The red light flashes 6 times then off.

6 times is the lamp thermal fuse or lamp. its a thermal that sits on the bottom of the lamp area.
remove the fan and you will see the siler disk with black base cut the wires and slide the new one in on the side secure it on the old thermal and your fixed.

Nov 04, 2010 | Sony KDF-E55A20 55 in. LCD Television

1 Answer

6 blinks of the red power light

The 6 red blinks means that the thermal fuse is blown, sony part number 191002393, which can be bought off of for about $5. You will have to remove the back cover, remove the OU bracket (It is silver with 3 ground wires connected to it), remove the fan bracket with fan and then the duct fan bracket (Plastic fan duct housing). Looking between where the fan was and the lamp on the front of the TV, there is a small silver metal disk with 2 wires connected to it, which is the thermal fuse. Using an Ohm meter, you can test it. If it reads open, it is bad. Of course, you must unplug the TV first and use caution. It is a very easy fix for someone who is handy. (Approx 10 minutes)

Mar 15, 2009 | Sony KDF-E55A20 55 in. LCD Television

2 Answers


No it sounds like the thermal fuse.

Apr 14, 2008 | Sony KDF-E55A20 55 in. LCD Television

1 Answer


As I responded last night the replacement of a thermal fuse is a very difficult task. The component is mounted on the lamp cage and require a great deal of disassembly. If you pull the back and the pull the center brace you will see a harness of wires. From the lamp cage you can follow either two black wires or a black and gray wire to where it has a coupling plug in said harness. Suggest a qualifier servicer to perform this task. The part can be purchase from Andrews Electronic.

Mar 29, 2008 | Sony KDF-E55A20 55 in. LCD Television

12 Answers

Sony KDF-E55A20

Sony model KDF55WF655 blinking light 6 red flashes,no picture,no sound....
I just replaced my thermal fuse for $4.80 plus shipping handling.Took me 30 minutes to fix and 30 minutes to get dust out of TV.Take off the back of the tv about 8 screws,then remove the fan housing on the right hand side about 4 screws.If you have the new fuse you will know which wire it is ..grey and white.I found it easy to get to the other end through the front panel of the tv only 2 screws ,remove front panel and then remove cover on projection bulb and you will see the other end of the fuse clipped on.Remember to unplug tv. TV is working excellent now .
Thanks to everyone on this website.I have pictures if anyone needs them to repair it.

Mar 01, 2008 | Sony KDF-E60A20 60 in. LCD HDTV

3 Answers

Sony KDF-E55A20

I want to clean the projector sitting in the back as I see that there is some dust on it. I dont know if that is a good idea or not or if it will even make a difference with the image on the screen. I want to take a pc of cotton and windex to it while I am waiting for my thermal fuse. Anyone with advice?

Nov 11, 2007 | Sony KDF-E55A20 55 in. LCD Television

1 Answer

Sony kdf-60xs955, rear projection tv

There is a Thermal fuse under the lamp housing that opens up and Sony has a New style fuse to replace it with, it opens up one of the p/s lines to set code 6, replace with new thermal fuse and test. You will want a Skilled Professional to replace this fuse as it does require some dissassembly and removal of light engine to remove fuse from under lamp housing to put new one on side of lamp housing.

Jun 19, 2007 | Sony Grand WEGA KDF-60XS955 60" Rear...

4 Answers

Power button

Sorry, I have to say it. If the bulb (LED) is shot it would have to be zero flashes :-) It's my weird sense of humour. After that I hope you'll forgive me and someone can give you some real help.

May 27, 2006 | Sony KDF-E55A20 55 in. LCD Television

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