Question about Projection Televisions
My screen is warped inward so the top left edge is distorted when a straight line is shown. All four corners toward the middle?
Can you post a picture of the set. This might be a convergence problem. seeing the set will confirm this.
Posted on Oct 28, 2007
This is a convergence problem.. possible deflection problem... you might need a tech to look at it...
Posted on Dec 08, 2007
check a this post:
it solves the same problem on my PTV
Posted on Mar 11, 2008
SOURCE: Warped Picture, Separated colors
You have a convergence problem. Here are some of the most common symptoms.
Screen looks 3D
One or more colors can't be adjusted when when using the convergence menu.
Screen is bowed in but stationary.
You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kit for your exact model. The kit inlcludes a photo instruction guide, original Sanyo STK chips, convergence resistors, etc. Everything you need to fix it yourself.
Posted on Nov 28, 2008
This is a very common failure on Projection TV sets.
You can see some example photos and find a solution here...
Posted on Aug 31, 2009
WS-55857 uses two STK-392-570 convergence IC's----you may have bad solder connections on them but what is more likely(I have seen this in sets that Mitsubishi made that use this chip) is that some of the pins are broken loose inside one or both of the chips.
Considering the labor to get the board out to resolder it, might as well just replace BOTH of the chips------Usually this repair can be done right in your home and takes about an hour.
If you are able to do it yourself you can buy both chips for less than 15 dollars on Ebay; if you need help I have complete step by step instructions for this repair that tells what you need and how to do the repair---if interested I can email them to you.
If you are not able to do the repair most shops charge 300-400 for this kind of repair; look in your area and if they say "needs to go to shop" keep looking; any good tech can do this repair right in your home.
Now is the slow time of year for TV repair shops so look around--I do this kind of repair here for 200-250 depending on the set --right in someones home! I have done hundreds of these sets.
If you need any help or would like the instructions reply to this comment here.
I do this for free here so if it helped you take a minute and give me a vote here.
Posted on Sep 02, 2009
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