Question about Mitsubishi WS-55905 55" Rear Projection Television

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Blue, green, red parallel curved lines at top of screen

I have a 9 yr old Mitsubishi WS-55905. 2 years ago the convergence IC's were replaced. Afterward there has been starting from the top of the screen 2 pairs each of blue, green and red curved lines in the HD mode only. At the right of the screen it looks like the lines curve back to the left slightly also. If the screen has a dark image they are very noticeable and hardly visible at all with a bright image. Other than this the picture is fabulous for an almost 10yr old TV. Any ideas what may be causing this.

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Hello sorry but it sounds like the chip have gone again when you replace these chips you might have to change the resistors and the 2 capacitors as well

shaun

Posted on May 08, 2009

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I have a Mitsubishi WS65611 I understand that the green lines are fixed and the red and blue lines are somewhat adjustable my green lines are no longer fixed in the top right and bottom left of the screen ...


YES, you either have a fuse that went out or the convergence IC went out... Sometimes it just comes unsoldered and causes the same effect. You need to locate this "IC" and tap on it with something non metallic. Like a ruler or a stick. While the tv is running and crosshatch is up on screen. If the lines get close as you tap on the IC or bang on the tv. then fuse is good and the tv might just need to be resoldered on that CONVERGENCE IC. Let me know how this works for you and if you have any questions give me a call @ 502-773-7969 and i can help u out further.
HAVE A GREAT DAY....Sincerely HDTV GURU JAY

Mar 15, 2011 | Mitsubishi WS-65611 65" Rear Projection...

1 Answer

Wavy green lines and offset during convergence calibration


There is whats called a convergence IC that is going bad inside this TV set. There is only one for all three tubes and the IC number is STK 393-11- and can be purchased here http://www.electronic-repair-kits.com/STK393-110.html You will only need to order one. If you are handy and can solder this should correct your problem. One very important thing is, before you reinstall the new convergence IC, make sure you use a good coating of heat sink compound on the back of the new IC. If you do not, the IC will fail within a short time frames. Only if you are good with a soldering gun should you attempt the repair. If you are not, this repair should run you about 300 bucks or so. Also if you are handy, there are seven capacitors that go bad inside a board called the DM board. These will go bad very soon so while your in there these should be changed as well. If you need info on how to change these capacitors, let me know and leave an e-mail and I will send you the pictorial on how this is done. the IC change you will need to find that, but I do have a service manual if you need one also to help you along if you can follow the schematic. Good Luck

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1 Answer

Letters and numbers are 3d and curved picture


Hello

red, green, and blue lines curve across the top of tv is cause by defective convergence STK IC or you have open resistor at convergence section. if you have defective RGB Color vertical ramp probably you have defective STK IC..

Angel
Thanks...

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1 Answer

Red and blue streaks across the screen top and bottom


The Convergence Amp IC's are bad. You should call a good TV Tech for this repair.

Jul 11, 2009 | Mitsubishi WS-65809 65" Rear Projection...

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Curved/warped and completely out of convergence Image


Sounds like you need the convergence amplifiers replaced. Cost approx. $300.00 for expert to repair.

Jun 20, 2009 | Mitsubishi WS-65809 65" Rear Projection...

1 Answer

Red and blue


convergence amp ic going bad.
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

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Double image


convergance ic bad
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

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convergance amp ic bad
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

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1 Answer

Uh oh... the colors are curved and wacky


replace the amplifier IC chips for the convergence.  part # stk392-???  could be from 040 to 120..  90% chance that'll fix it.

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