Question about Mitsubishi VS-50502 50" Rear Projection Television

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Convergence lost i woke this morning to find that all three tubes have gone out of alignment. what, if anything, can be done and how much will it cost? thank you in advance for any help or advice.

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Re: convergence lost

If all 3 colors have gone out of alignment, it means that the power supply for the convergence output IC's has stopped working. This usually happens when one of the IC's shorts out and overloads the power supply, causing the diodes and/or low value resistors to burn out. The bad convergence IC should be replaced and the power supply restored by a qualified tech familiar with Mitsubishi projection sets. When I do a housecall for a set like that I charge $150, but shops in your area will vary so be sure to ask around.

Posted on Aug 27, 2007

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What is a convergence amplifier

The convergence amplifier is a three channel Integrated circuit which controls the convergence alignment of the three picture tubes in a rear projection TV. Your convergence amps are STK392-110 there are two of them also check the six 2.2 ohm 2watt resistors

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maybe convergence problem. Contact tech support with this #4 display

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If you have background in electronics, you can do it. The difficult part here is on how to access those convergence amp(convergence circuit output IC). By replacing those 2 IC and some resistors sometimes, adjust the convergence and your done. Good Luck

Mar 05, 2010 | Mitsubishi VS-50111 50" Rear Projection...

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I have a 60sx2k alignment won't hold

There can be a number of causes for this behavior. At this point I would suspect the convergence ICs. If you can solder, I would start by resoldering the pins of the convergence ICs. If that does not resolve the problem, then I would next change the ICs. I really believe that the solder connections are the problem as the unit would not converge were the ICs defective.

Please keep us posted on your progress.


Dec 03, 2009 | Hitachi Projection Televisions

1 Answer

Fuzzy picture

never adjust the tubes themselves( No-NO) these are affixed to the chasis in one position and not to be moved. no adjustments should ever be attempted to anything directly attached to the tubes. this will throw off centering, soft-focus, & convergence alignments. it can be corrected but a huge burr on the bottom of the foot! what you have are faulty convergence ic's and maybe sme low-ohm resistors that are bad. repair in-home should not exceed 350.00. parts and labor. mch

Mar 09, 2009 | Panasonic PT-53TW53 53" Rear Projection...

1 Answer

Distorted picture

Sounds like you have bad convergence ICs or maybe I doubt it but maybe a bad tube. Convergence ICs go for around 15.00 each you will need both of them. I tube if you need one and I doubt it IF it is available should run around 110.00-200.00 some where around there.

Aug 27, 2008 | Panasonic PT-53TW53 53" Rear Projection...

1 Answer

Picture is concave on top and bottom. With ed and green ghosts.Worked fine, turn set off and on about 15 minutes later and picture was as described. Help!

The convergence chips in your tv have gone out. They control the three picture tubes and align them so that they create one picture on your screen. I recomend having a qualified technican replace them and realign you convergence. Thanks.

Apr 02, 2008 | Akai PTH5498 54" Rear Projection...

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How do I replace the blue color tube

no i would not even try it. you first of all would have to get at the tube and then you have to replace all the stuff on the tube then align the tube and then convergence, 800 bucks for three tubs isn't a bad price, however another couple hundred will buy you a new one...

just for giggles how about just replacing the blue, how much?

Dec 04, 2007 | Panasonic PT-53WX53 53" Rear Projection...

1 Answer


Color tubes are OK. Do not adjust. The issue at hand is called
convergence alignment.The repair involves-------
1)Pull chassis
2)Replace convergence IC's
3)Recheck alignment
work should be done by a skilled technician........T.

Oct 24, 2007 | Philips 60PP9202 60" Rear Projection...

2 Answers


The convergence IC's should be the first suspect in any convergence issue. Hopefully you can place the magnets back where they were or you will have that alignment to deal with first.

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