Question about Sony KP-57WS500 57" Rear Projection Television
The pic is off there is bowing at the top and bottom of the tv screen
Picture becoming distorted at the top/bottom of the screen is due to the convergence circuit going bad, and is a common issue with big screen projection TVs.
The convergence circuits will need to be repaired, which will generally require some soldering and ordering new parts for ~$75. If you want to get a TV technician to repair it then you will probably be looking in the region of about $300 for a repair.
Here is a link to repair guide for a Mitsubishi TV. Obviously a different model, but the convergence circuits are generally the same for most makes/models - this will give you an idea of the work involved to fix it: http://www.techlore.com/article/22530/DIY-Repair-Replacing-Convergence-IC-s-on-a-Mitsubshi-TV-Set/
Posted on Nov 17, 2009
Testimonial: "thanks great advise "
Please check convergence out section as it sounds convergence out chips are bad and requires replacement.
Let me know if you want to repair TV by yourself to provide you more info.
Posted on Nov 17, 2009
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Posted on Jan 02, 2017
If you're not a professional TV repair person, the following information is good only for reference. If still under warranty or if you have no electronic repair experience you should take the set back to the shop or to a repair person. Some of the solutions described below can be dangerous, TV's are very hazardous to service. Even when plugged out, TV's can store very high voltages. You will need to change the Stk convergence amplifier Ic's. You will need to check for the proper Ic, but it might be an Stk 392-110 (Q751&Q752). These Ic's fail sometimes due to lack of heat sink grease, and also because they expend lots of heat. Good luck
Posted on Jun 19, 2006
Big Irish, you were right on. I brought the tv in to a shop and ha dit diagnosed, a convergence ic was bad, they ordered me one and I soldered it in and got it working. ready for this I spent a total of $272 for diagniosis and part. in my op[iniom that was not bad at all tv has been working for over a month.
Posted on Jul 19, 2008
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