Question about Sony KP-53HS10 TV
Hi, I had a problem with my Sony CRT television. When I switched it on, the picture got brighter and brighter until it switched itself off and flashed up the error code for over current protect. Also, when the picture was working, there were faint purple lines across the screen (barely visible). So, I took it to be repaired and they told me that the flyback had failed and needed replacing. I've now had the repair done and after a day, it's doing exactly the same thing again. Obviously I'm going to take it back to the repair shop but does anyone have an idea of what the problem is? Thanks
The faint background lines are vertical flyback lines. Start your diagnosis by turning the brightness and contrast controls to minimum and view the screen in a darkened room. If you can now see a raster with horizontal lines visible then it is likely that the tubes A1 screen voltage is excessive. The screen voltage is usually within the range of 400v to 600v. Adjustment for this is often part of the flyback transformer. Check all high value resistors
in the screen and focus circuitry. Some of these reistors may be
built into the flyback transformer. As the picture gets brighter the beam current increases, this will eventually cause the X ray protection circuits to trigger shuting off the set. A fault in the video drive circuits to the cathodes of the tube will cause similar symptoms but usualy results in a predominance of one colour, ie
bright red, blue or green raster with flyback lines.
Posted on Oct 30, 2013
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Posted on Jan 02, 2017
SOURCE: sony kv-32xbr400
Hi The problem is dry joints on the vertical output ic for sure(commen fault with sony),ime in the uk and 99% of the time i get a call about sony tv its allways switches itself off, caused by dry joints.
Posted on Mar 27, 2006
NO -the tube will be fine . The TV is in 'protect mode' . THis means that it has shutdown because of an internal fault condition. THis TV needs a technician's love..
Posted on Sep 18, 2007
This is a symptom of the circuit failing.
it will soon be much worse.
You need a tech.
you can verify it is the tv circuit.
remove cable or input another signal such as dvd
bring up the TV' menu. does it have the lines.
Posted on Jan 26, 2008
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