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Problem for Sony BRAVIA KDL-40V3000 Television

KDF-50a12U Powers off then standby light blinks 3 times

By chris_j_trew on Oct 19, 2009

" "

Hi,

I have the KDF-50a12u and the picture has been getting darker and darker then the TV started to power off randomly then the standby light would flash red/green.

I have now replaced the lamp with a new £160 bulb and housing this has improved the picture 100% however the tv keeps turning off, the standby light flashes red 3 times then green. PLEASE help im pulling my hair out.

Comments:

Oct 19, 2009

- Hi, Thanks for you help. I have confirmed by opening a back panel that the lamp door switch is engaged when shut. I should have added that the TV does not power off strait away its normally after 5-10 mins. Any other ideas? Thanks Again Chris

Oct 19, 2009

- Hi, the replacment lamp is a philips one i bought off ebay it has restored the picture to the quality that it came from the sony center in, so i doubt its the lamp also the tv did this before i changed the bulb. The only difference since changing the lamp is the improved picture. This is a weird issue as it turns of randomly sometimes after 1 min sometimes after 5. Thanks Chris

Oct 19, 2009

- So let me get this right. The lamp i bought today from a shop for £160 is no good?? even tho i asked them several times if this was a sony original and they assured me that the philips components where used in the sony original and that i would have no problems. How can i be sure its the lamp so i have some evidence when i go back to the shop tomorrow. Regards Chris

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Solution #1

posted on Oct 27, 2009

techman007

Rank: Guru Sony

Expert
Rating: 89%, 121 votes

The Ballast sense turn on faulty replace the lamp ballast and the lamp door sense switch, Also some times the heat gererated from the lamp can slighty warp the door causing intermittent door to switch connectivity.

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Solution #2

posted on Oct 19, 2009

welcomejee

Rank: Guru Sony

Expert
Rating: 89%, 3230 votes

Please recheck Lamp Cover and make sure it is fixed in its space securely as 3 times red blink shows lamp cover error.
There is small safety switch in TV cabinet under lamp cover that has to be pushed by lamp cover if it is fixed in its position properly. That switch is not being pressed by lamp cover and causing this error.
Thanks.

Comments:

Oct 19, 2009

- I just checked service manual of this TV for 3 times blink error and here is correction.. (I was wrong in first response, sorry for that)

It is not lamp cover error as lamp cover error gives
2 blinks.

3 times blink is Lamp error. (as per service manual) either lamp is burnt out or ballast supply is defective.

Thanks.

Oct 19, 2009

- Is replacement lamp Sony original one or aftermarket/ compatible/ alternative lamp?

Oct 19, 2009

- Yeah, Lamp is cause of this 3 blink error, please install Sony original lamp for TV safety.
This alternate lamp is consuming more current then its rating and protection circuit sense it to send error signal to system control.
Thanks.

Oct 19, 2009

- Click HERE to see original lamp image and click HERE to see its packing/ box.
It is XL-2400 lamp.
Please visit nearest Sony Service Center to buy original XL-2400 lamp.

Oct 19, 2009

- oops, links seem broken,
Click THIS Sony official link please..

Oct 19, 2009

- and can see HERE its packing/ box

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