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Question about Sony KV-27V26 27" TV

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TV power supply problem

Ceramic capacitor blew apart with a loud snap on the "G" power supply board of my Sony KV-27V26. Since there isn't much left of the capacitor, I'm not sure what rating of capacitor I need. It's the capacitor at position "C613" of a Sony G power supply board. Will just putting another capacitor on really help, or is it probably another problem that blew it in the first place? I've looked around and can't seem to find any sources that still stock Sony "G" power supply boards, any help telling me where I can find a new board, or which capacitor goes in the C613 location on the board is much appreciated; thanks in advance.

Posted by John Hauer on


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.01 mf 2000 volt. in flyback circuit .it is a timing capacitor. the red high voltage block is bad and that took out the capacitor. also check the horizontal output is probably shorted.

Posted on May 13, 2009


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Hope this helpout in solving the problem

Tv blew up

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Trying to identify a capacitor on the power supply board

IF you have the G BOARD part #A-1316-367-A it's:
1-162-133-00 CERAMIC 390PF 10% 2KV
IF you have the G BOARD part #A-1316-422-A it's:
1-161-754-00 CERAMIC 0.001MF 10% 2KV

Sony kv 29x5d

Please mention correct model number to check C633 value.
My system recognise this model as incorrect.

Sony kv xj29m50 no picture.

If I understand you correctly:
The horizontal output transistor in your TV blew.

You replaced it with a BU2520DF.

I'm not sure what you mean by "change to dynamic mode".

Dynamic what?

Usually, horizontal problems in TVs are caused by bad capacitors in either the sync circuit, the driver circuit, the geometry circuit or the output circuit.

When I repsir problems like this I use an oscilliscope to find which stage is not working properly, then start substituting the capacitors in that stage until the problem is solved.

Look for large orange or blue ceramic or polyprop capacitors with bulges or cracks in them.

Look for electrolytic capacitors with bulging tops or shrunk cases.

Check and make sure no resistors are brown, they may be blown.

Use an ohm meter to test low value resistors in circuit.

If you don't have an oscilliscopw, that's about all you can do.

Tv repairing

You still have something open in power supply. Look for a fuse resistor or bad relay.

Resistor on power supply board

Dear Biigjohn, First, first C613 means that it is a capacitor, not a resistor.And It seems to be a electrolytic Capacitor.If it has burst, then it's can will be inside. just search. the details of the Capacitor will be on it. most likely it will be a 10mfd 160V capacitor. Check and replace.
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