Question about Sony KV-35S26 35" TV

4 Answers

Won't turn on

My tv is about 10 years old. Worked well up until last month, then stopped working. Nothing funny happened (noises, picture was good) - just quit. I took off the back and checked the fuse - it was good. Have verified power at this outlet is ok. I assume it's something to do with the board that controls power to the tv - any ideas on how to search out the problem?

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  • Master
  • 407 Answers

1-1st check the standby light.
2-if ok check the powersupply in the rectifier bridge.
3-check the following transistors R623, R622, R608, R611
4-check power supply in regulating ice or driver.check if the smps transformer is shut.
5-if that does not help fault is surely in horizontal oscillation section.

Posted on Feb 03, 2008

  • krishna Singh
    krishna Singh Feb 03, 2008

    i am sure it will help.keep on.

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  • Sony Master
  • 8,617 Answers

This model is the AA-2 chassis. They have a unique problem in theier power supplies. Locate Q502 and write down the number of that transistor. Then go to the link I am posting here. They have the repair kit for your sony for 6.99 it contains the horizontal output (Q502) both regulators and resistor that commonly short in these sets. They sell 2 kits. just click on the kits one at a time and it will list the transistor numbers. get the one that mathces your Q502 it will be a 2SCnumber. That should cure your problem. If not the only other component you would possibly need is the power IC601 that cost 10.00 but go for the repair kit at 6.99 that repairs 90% of this models power supply problems. They offer fast shipping as well. Here is the link the kits are on this page.
http://www.electronix.com/catalog/default.php/cPath/16_213

Posted on Feb 03, 2008

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  • Master
  • 871 Answers

Hi there

if you want to do the good old check 1by1 thingy, you can always use the GoodOld Tester... it may be thought becuase it may take you some time to do it. but if it makes you happy...by all means right. :)

just be careful though because as you described your tv, "just quit". you may want also to do of heiarchy test starting from capacitors all the way up until the tube.

my advise...when in doubt, you always have the choice to bring it to a service center. a 10 year old tv always have sentimental value. :)

cheers.

Posted on Feb 03, 2008

  • earl norman llanera
    earl norman llanera Feb 03, 2008

    wow, good thing there are lots of experts here @ fixya. :)


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  • Master
  • 3,422 Answers

HI,
First thing to do is the reset and the whacking test. I give this a 50/50 chance of clearing it up.

ONE: Disconnect the power cord for 4 hours. Then when you power it back up the internal soft codes will automatically reset to factory defaults.

TWO: The whacking test is to just bang or smack the set with your hand on the back, side, top, etc., to see if there are loose connections or cold solder joints inside that are acting up. If so, the banging should knock them back to normal and the set should restore. You might have to use some creative banging and some have had to put a book or magazine under one corner to torque the chassis enough to get it to work reliably.

If these two procedures do nothing then:

The Sony blinking code gives key diagnostic indicators, but still, it will require a tech to dig into that section identified by the diagnostic code in order to find the specific default.

Thi xbr sets are famous for AKB circuit failures. This circuit (autio kine balance) detects when the tube warm up is ready for video to be displayed. Most of the time it is due to defective AKB circuits rather than defective picture tube elements.

The repair will cost around $200....... If your set is marginally qualified for the repair; otherwise, you might be better off (financially speaking) to replace it. You will have to decide.

Goodluck,
Please don't forget to rate me as fixya..

Posted on Feb 03, 2008

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