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I have a Sony tv KE-32TS2E The problem with this tv is solarisation I have established that the problem is in the power supply board ( by ellimination) How can I find out which component in the power supply board is causing this problem.

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  • info54668 Oct 13, 2010

    Your answer yesterday about sony tv ke32ts2e did not help me. I know the power supply is faulty because I tried the same power supply on more than two tvs of the same make and model , when this faulty power supply is fitted to another good working set ( of same make and model) same fault shows up.

    The symptom makes parts of the display look silvery effect, like you get when the contrast control is turned up very high. In this case you cannot cure fault by varing the contrast. This silvery effect shows prominently on the faces .

    Thank you for telling me about the three year sony guarantee I have been in the game long enough to know about this. This set is over eight years old. I want to repair it to component level

    Please if you have no solution to this problem, pass to another engineer



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What users call solarization is a false contour effect caused either by video processing problems (often due to overheating), or by a defective plasma panel.
I have never seen a problem of this kind being caused by defective PSU.

There is a lot of false or wrong info on this topic published on the Internet (the term solarisation has been invented by users, this phoenomenon is not the same as digital image solarization in photography).

I wonder what eleimination process you used, and I wonder to what URL you are referring to.

If the problem is false contour, red faces and lack of contrast, it can be a problem related to main controller board, rather than PSU.

In the general confusion that dominates threads talking about "solarization", often problems due to incorrect picture settings, where no fault is present are often referring to solariaztion (eg. those rubbish pages titled "How to discover if TV has solarization before buying a TV".

If problem is very evident and does not go away changing picture settings, then problem is either main controller, G2 board (ausiliary graphic controller) or plasma panel. Problem is often associated to overheating.

If you are sure that the TV is faulty, as first line of action rather than attempting repair, I suggest calling Sony. You have three years factory warranty, and if really there is a factory defect, Sony will fix it even out of warranty.

Regarding the PSU, this is tested, reading the AC input, checking power cord for continuity, testing zener at AC input, testing individually resistors at outputs (ensure continuity), jumping activation lines and reading volts outs on different values, starting from 3.3V. When the PSU is defective, TV wont start, or will turn off by itself. Your problem is not PSU.

Below a service manual with full schematics, adjustment and repair procedure. As first thing call Sony.

To download part one, please, click here.
To download the part 2, please, click here.



Posted on Oct 12, 2010

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