Question about Sony KV-32V40 32" TV

2 Answers

Sony kv-32v40 Screen blins on and off

I have a Sony KV-32V40 TV that the picture blinks on and off. Turned up the High voltage just before you see the blanking lines. Seems to have fixed the problem but would like more of permanent fix. Any help would be much appreiciated. Down to component level would be great! Thanks Frank Camera guy

Posted by Frank Smith on

  • eddiespeegle May 29, 2008

    I have the same problem with my Sony KV-32V40. Screen Blinks off & on while audio is fine...

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2 Answers

Mark Moore

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HI
Right idea, wrong control, the screen control to adjust is the one located on the crt board, usually need to only adjust it just up a tick, I've worked on alot of these and that usually takes care of the problem.

Posted on Dec 01, 2007

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Anonymous

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Increasing the screen control will not repair the problem,look for loose conections in the Horizontal driver transformer,readjustback the screen control.

Posted on Sep 01, 2006

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My sony KV-32V40 has worked well for a number of years. All of a sudden, there's no picture, but the audio is perfect. The timer/standby light flashes a number of times at startup, but the picture never...

I would expect, based on your description, that it is likely a bad solder connection on the main board. The internal connections can develop small cracks over time and eventually become intermittent. There are other possibilities, but this is a likely one. Whatever the source of the trouble it would need to be diagnosed by a technician. I would find a technician or shop that can give you an estimate and you can base your repair decision on that.
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KV-32V40 32" TV Problem:

Need a little information here...

1. The TV remains on with no picture, but the sound is fine?
2. How many blinks does the standby light give? Are they continuous? Is it the same each time, or random?
3. Did anything else happen before this, or did it just happen one day?

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Take it to a shop... It's a good bet that the jungel Ic, crt driver Ic or something in the HV has failed. Could be also that the crt itself is failing. If that's the case a tech can test it with a B&K and know for certain.
Also, if you want to save a few dollars take it in to them, don't make them come and get it - it just drives the price up for a pu/del charge.
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You can try this on the remote in standby mode, meaning tv plugged in but set off. Press Display,5,vol+,power on remote.Press each button within a 1 sec interv. Next the CRT display the item being adjusted. Press 1or4 on remote to select item. 3or6 to change the data. Press Muting then Enter to write into memory. Service Reset muting green enter red. Press 8 then enter on remote to initialize. turn set off to exit. wait least 10 sec. before turning back on.
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Tv shuts off - sony kv-32v40

They are very relevant because you might have a high voltage ark from the output transformer or a shorted picture tube,the ark or high voltage leak you might not see but the shorting of the picture tube you will when it does it,being careful remove the back cover and leave the back open,turn the tv on and wait for the moment the shutdown takes place and look at the neck of the picture tube and thru the glass of the tube you might see the moment it shorts out and the set shutsdown,if you see something in the neck of the tube is because the tube is bad,take a look at the conections in the crt board maybe one of them is loose,the arking or leakage from the output transformer is dangerous and it should be observed from a safe distance(10 feet),if you notice something in the output transformer he will need to be replaced,both situations involved high voltage areas and if you are not too familiar with tv service you should get the assistance of a servicer.It is a good idea to resolder the main board if the two possibilties do not show or when the main problem is corrected.Let Us know how it goes or if you need more information.
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