Question about Sony KV-27V36 27" TV

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I have a Sony KV-27TS31 and the picture is colour saturated and it will not hold horizontally. This happens usually after it warms up. We have a good picture if we watch through the video channel - I mean through our DVD player. What is the problem?

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You have a bad circuit see a tech

Posted on Feb 25, 2010

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Standby light blinks you hear the contactor clicking in set, no audio and no video displayed. sony kv-36Hs500 only looking for response if this is free of charge


this symptom is usually caused by a breakdown in power supply circuit or it may also be caused by a breakdown in the horizontal deflection circuits which includes horizontal oscillator, pre drive or drive circuits, horizontal output transformer, horizontal output transistor and high voltage circuits (flyback transformer). pls observe precautions in dealing with this high voltage circuits and if so happen you are not inclined with this kind of work, it is better for you to bring it to a qualified technician to avoid accident. good luck!

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Can colours be adjusted manually? Some TV stations vary in colour content. How do I change the colour values?


you might find the colour & saturation levels controls. using your remote to set that up, check the tv manual... if you don't have one, you can likely find one on-line by doing a few searches.
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this will continue to degrade, almost any failure that can be affected or temporarily cleared up by hitting the set is caused by bad solder joints.

A good shop should be able to find and fix the bad solder connections for probably a little under $100
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Sony trinitron tv kv type


The screen voltage adjustment should be on the back of the high voltage multiplier. It should be marked as "Screen", or "G2". Next to it, is the "Focus" adjustment.

Some models of Sony sets have two focus adjustments. This is for H and V focus.

When increasing the screen voltage will usually increase the wear factor of the electron-gun assembly in the CRT. This is because it is increasing the screen bias current.

When increasing the screen bias, the brightness will increase a little. When the CRT is weak, this may produce visible retrace lines more so than on a good working CRT. This is because the excessive screen current will stop allowing the electron-gun assembly to work at its proper cut-off level in order to allow the blanking drive to bias it off during the retrace period.

Increasing the screen bias will usually cause a shift in the colour temperature especially in the low level gray colours. This is because the AKG reference for the electron-gun biases will be offset due to the differences in the electron gun performance characteristics change.


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Probably a defective horizontal output transformer , also check the horizontal output transistor. Both parts available from tritronicsinc.com

Jan 28, 2008 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

Color lines/no picture


Well, if you still had a good picture before it happened, I would repair it.

This problem is usually a small part in the horizontal circuits. The service charges may be high, but the parts cost should be low.

This is a large heavy set, If you take it yourself to a shop you will save on the service call.

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1 Answer

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hi there, your set has a capacitor problem, most of it are on the horizontal section and video section., usually 100 microfarad electrolytic capacitor with a high voltage is damage. try to test some parts. ty

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2 Answers

Sony KV-27V55 no picture sound ok


I have a KV-27V55 and when I turn the TV on the picture and sound is good for about 30 minutes and then the picture goes off, but the sound is still on. It will come back on after a while.  What do I do?

 

Hog_mama

Jan 14, 2007 | Sony KV-27V55 27" TV

1 Answer

Green screen with almost horizontal zigzag lines


Is good that you hit it and it reacts,very likely you have loose conections in different places but for the distorted picture you need to check the horizontal driver transformer and flyback after that is corrected you need to check the complete chassis for loose conections.Take your time.Good luck.

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