Question about Sony KV-40XBR700 40" TV

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40XBR700 picture problem.

Upon trying to turn on the tv the standby light flashes several times, i hear a click like the tv is going to turn on but nothing happens...i waited a few mins then the tv turned on...whats going on???? this problem has been addressed in another section of this forum however i was hoping someone could explain it in laymans terms...thanks

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Re: 40XBR700 picture problem.

The problem is loose contact on the pc board try to resold the cold part of the tv

Posted on Sep 29, 2007

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Sony kv-40xbr800 stand by light flashing no picture

How many times do this standby light flashes? These flashes are fault indication, called blinking codes. From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit stage inside the TV. Count the number of flashes. If you wish to get more detail about these blinking codes to Sony TVs, check the site linked here.
Pull up previous posts by its left sidebar, or type in the brand name and model number to of your set, to its search box, and press 'Enter' or view it in Mosaic / Timeslide option.

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I have spent about 4 hours tonight researching several tech sites and the Sony service manual for the same problem with my Sony KV-32HS510 unit. I was able to download the manual from a website and a TV Repair training lecture paper at .

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A refurbished D Board part no. A1300319A can be bought for around $200 with a new board at $550 per the site. Then add $100-$200 for an actual TV service technician and you have a repair bill approaching the costs for a new flatscreen TV.

Some tech types posted that they have actually repaired their boards by replacing individual components for around $40. You may find a service shop that can do the same component level repair at the $100-$150 level cost. It turns out that the closest authorized Sony repair shop is 2-1/2 hours away from us. Good luck finding someone close by.

We were able to get our TV to come back on after dozens of attempts and plan to leave it on until it dies all together. I may attempt my own D Board replacement when the time comes.

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1 Answer

Tv will shut off while viewing. standby light flashes.

The problem with your Sony. This is a common problem with these Sony sets.

1. How many times does the light blink? Is it consistent and continuous?
2. Does anything happen to the picture itself, or does the set just turn off?

Answer that and I can help you.

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No picture No sound


What number of the chassis of your tv set ?



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