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Sony Wega turns on and off and on and off... HELP!

My 50'' Sony Wega KDF-E50A10 turns on and off on it's own. I turn it on...it works for about 30 seconds...then turns off for 30 seconds...light blinks around 30 - 60 times then powers on again...only to go thru the same cycle over and over. WTF? I'm sure this is not a bulb issue...but what is it? Please help techies!!!

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  • kujo259 May 30, 2009

    Sounds good...I guess I'll have to beg, borrow, or steal that equipment. Is there a specific meter reading I should look for? Hmm...maybe Radio Shack would have one of those!?

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It could be the bulb, but most likely it is power supply. Very common in rear projections. It could be a ballast issue, but if the color wheel is spinning, than the problem is most likely faulty power supply. You can test the supply with multimeter to check current.

Posted on May 30, 2009

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Our Sony developed the same symptom and it was the bulb itself

Once replaced the problem was corrected.

The ballast will always "try" to start the bulb.......

Cheers Dave

Posted on Jun 27, 2009

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Posted on Jan 02, 2017

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Some of these models have this problem from production.
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If you are using the original remote, there should be an extra button marked 'CC' Cycling that button will probably offer more than one choice. Typically it will include CC on mute, CC on, CC off.     If that isn't present, you should be able to access audio settings through the main setup menu. 

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Part Number is A1167541A, service rep called it a Q Box in the diag, however the web says its the b block assmy.

read this if you think it's the same problem

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