Question about Sony KP-65WV700 65" Rear Projection HDTV

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Vertical convergence on left side of screen

I have a SONY KP-65WV700 and I had a convergence problem with the screen 2 1/2 years ago and had it repaired by a sony authorized shop. Needless to say it was a pricy fix. Well, I have a convergency problem again but this time is vertically on the left side of the screen. I have read a few fixes posted on the web site and I would like to know if it's worth changing the whole board "D" this time instead of just changing the IC's, besides, I can do the swap myself and save a few $$$ in the proccess.

Thanks for your time

Aurelio

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Your symptom sounds like a damaged convergence IC.

You bet, with a small wattage soldering iron ~45 watts and rosin core solder, solder wick, and some heat sink compound. You can fix it yourself and save. Be sure to scrape off all of the old compound, this will cause the IC's to last longer, and transfer heat better.

There are two and large IC’s that control the convergence in a big screen set. Some of the newer sets only have one. They are secured to a very large aluminum heat sink. They will have a part number stamped on them that will start with an STKXXX-XXX, like STK392-110, and they are located on the signal board (on the left as you look into the back of the set).

Along with the convergence IC’s there will also be some associated components that will need to be replaced as well. There are some resistors that are part of the convergence circuit that will be open and need to be replaced. Most likely these will appear charred in the center. If you have an Ohm Meter or a DVM, check all the resistors that are close to the IC’s and you should be looking for either ones that have opened or have changed values.

If one of the convergence IC’s are found to be bad, I would replace them both, if one has gone bad the other may go soon. I usually order my parts from Andrews Electronics in California, they will have the OEM components that you will need.
Their site is http://www.andrewselectronics.com/welcome.aspx
And their phone number is a 24-Hour Order Desk: (800) 274-4666
I recommend the phone order so you can talk to the person about the different types of IC’s that are available.

I would also advise that the convergence IC’s be OEM or better, just because they are cheap does not mean that they are a good deal. I have seen the cheap IC’s fail after a short time, even though they look exactly like the OEM IC’s. I think that the bottom line is that you will get what you pay for when it comes to the parts.

You can also try http://www.tvrepairkits.com/ , I have not tried them yet, but they do carry OEM or better parts.

I hope this information allows you to resolve this issue.
If you need further assistance please comment to this post and I will try to help you further.
asnowman

Posted on Oct 07, 2009

Testimonial: "Thanks for your assistance. I will let you know how it turns out, Aurelio"

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