Question about Sony KDF-E55A20 55 in. LCD Television

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Kdf-e55a20 sony picture goes black and comes back in constantly while playing

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  • jayls430 Oct 30, 2008

    The sound goes out. No cable box connected. Green light not flashing when picture goes out

  • ultscan Nov 12, 2008

    I removed the lamp, it does not appear to be blown.

    I keep hearing the same exact thing, picture and sound goes out and comes back on repeatedly. I will resolve this, I reseated and cleaned the

    video board, audio board, the power distribution board. Removed all three fans and cleaned them. Same issue.

  • jayls430 Nov 16, 2008

    Sorry I didn't get back to you. Replaced the lamp and TV is fine. Thanks for your excellent support.

  • rm3228 Nov 29, 2008

    My KDFE55A20 just started doing something similar. It will stay on for about 5 minutes, then the picture goes black and sound goes out. (no indicator or flashing lights) After about 2 minutes, the picture and sound come back. It will continuosley repeat this cycle. I've had it about 2 1/2 years and have never replaced the bulb. I've had no indicator lights on the front of the set come on. I checked the bulb and it appears unclouded and in tact. Someone mentioned it might be the thermal fuse. ANY IDEAS??

    If it is the bulb or fuse, can I replace? Where is the fuse located?

  • Any Guy
    Any Guy May 11, 2010

    If you have not replaced the lamp, that is the first thing I would try.

  • Any Guy
    Any Guy May 11, 2010

    Does the sound go out also? Does the green light start flashing when the picture goes out? Also, do you possibly have a cable box connected HDMI to the TV?



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One commenter said they heard a buzz. This is the lamp ballast trying to ionize the gas in the lamp. Kind of like a spark plug arc. Very good observation, as it's hard to detect! It will do this buzz sound until either the lamp ionizes or a few unsuccessful attempts, then it will set a fault code. Normally the ballast monitors the lamp current constantly and if it gets out of spec it will do sort of a mini reset, trying to recycle to lamp voltage.

You may not have noticed the picture getting darker since it happens so subtly over time.

This type of cycling is related to a weak lamp. Change it, give all ventillation openings a good vacuuming and you should be good again.

Posted on Nov 14, 2008


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When did you replace lamp last time in tv?
If lamp has not been replaced in last 2-3 years then replace it to because existing lamp is getting weak and causing problem.
Lamp replacement procedure is written in user manual of tv.

May 15, 2011 | Sony KDF-E55A20 55 in. LCD Television

1 Answer

Sony KDF-E55A20 problem: picture goes intermittently black and no sound. Green light is still on. Just started to happen. Is increasing in frequency. Not sure if I hear the fan working or not.

Same thing happened to me. If you shut it right down and then start it back up do you get 5 red flashes? if so then what I did was replace the lamp as it was real old. This took care of it.

Feb 12, 2010 | Sony KDF-E55A20 55 in. LCD Television

1 Answer

Picture goes out, comes back, sound is fine

I found several instances of this probllen on various forums, and determined that it is the bulb after all. It seemed that a bulb should either work fine or be burnt out, so I thought it might be something else, but so many other customers had this identical problem that I am 99% sure it is the bulb. I found a replacement bulb with housing for about half the price of the Sony Store, so i ordered it. In the meantime, another customer offered a suggestion to try adjusting the Power setting to Power Saving instead of Standard. I tried this last night and the picture worked fine! I will replace the bulb when it arrives and keep the old one on hand in case this happens in the future. Thanks to all of the posters out there!!!

Dec 07, 2009 | Sony KDF-E55A20 55 in. LCD Television

1 Answer

I have a Sony Model # KDF-E55A20 HD Television. I

So what ur prob?Yes the power supply prob.if getting nothing,no response to power,click when turn on,or no standby light indicator.

Oct 19, 2009 | Sony KDF-E55A20 55 in. LCD Television

2 Answers


How old is this TV and have you replaced its Lamp during that time?
Symptoms shows your Sony KDF-E55A20 TV's lamp is weak and need to be replaced.
Lamp replacement procedure is written in its user manual and if you want online copy, let me know.

Aug 30, 2009 | Sony KDF-E55A20 55 in. LCD Television

1 Answer

Sony kdf e55a20 picture goes black sound stays on

Thanks for updates.
Its time to replace Lamp. Please buy original Sony Lamp for Sony TV and avoid aftermarket or compatible parts for good performance of TV.

You can purchase original Lamp form Sony Accessories Store. Just type TV model in search box and see details by click search.
Good Luck

Jan 17, 2009 | Sony KDF-E55A20 55 in. LCD Television

2 Answers

My Sony comes on then both sound and picture goes black.

After being on a little while, the screen goes black (no audio as well) for 20 to 30 seconds. Green light stays on. Then, picture comes back on and takes a couple of seconds to get up to full brightness. About 5 seconds or so after the video comes back, the audio returns.

Until this morning, has only happened a couple of times a day, now happening more often. About 3 times in last 20 minutes.

KDF-E55A20 is about 3 years old.

May 03, 2008 | Sony Grand WEGA KDF-55XS955 55" Rear...

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