Question about Mitsubishi WS-55807 TV

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Electronics skills Yeah, definitely been doing electronics a while. Mostly guitar amps though. I've never been a TV guy, but I did replace a convergence IC on my old Pioneer SD RPTV.

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Replace electrolytic capacitors in the power supply section. start with replacing (2) 860uf 180v caps just after the bridge rectifier and continue along the circuit. Some (15) or so capacitors later, it will clear the horizontal bars and lines and any high pitched noise that comes along with it.

Posted on Mar 21, 2008

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3 Answers

Hitachi projection TV - video is in 3d rainbow


This sounds like a convergence circuit problem. Your set has two convergence IC chips (integrated circuit). One is for the red CRT, the other is for the blue CRT. This is a common issue with projection TVs. It is not a difficult repair if you have any experience with electronics and soldering. Both convergence ICs should be replaced at the same time. The part is IC (STK394-160E) and is available for around $36 or less. If you have a shop fix this they will likely charge $300-$400. If this information was helpful or if you would like to know how to do this repair in more detail post back on this thread. I would be happy to walk you through it.

Dec 02, 2009 | Hitachi 43UWX10B 43" Rear Projection...

2 Answers

Mitsu Proj TV WS-65711 needs Converg IC chip. Part Co$t + labor?


There is either a pair of STK392-570's, or
a STK393-110. Probly also 1 or 2 pico fuses for the +/- 26v line in the power supply.
Parts aprox 80.00 to 90.00
Labor 150.00 to 180.00
Plus service call fee if any.
So figure it up from there. Labor cost does vary from location to location. I do feel confident that capasitors are not causing this problem in the way you explained the symptoms.
Hope this helps,
Skyassoc

Jun 18, 2009 | Mitsubishi WS-65711 65" Rear Projection...

1 Answer

My PT-53TW53 Panasonic


Be aware:-
There is electric shock risk involve in TV repair.
You should have strong electronics repair knowledge / experience and good soldering skills. Repair your TV at your own risk.

Mostly 3 blinks in this model shows convergence out ICs failure and you need to replace STK 392-110

Its big black IC and TV has 2 mounted on silver heat sink at main board.

HERE is a pictorial web link and you will see how you can replace these ICs.

STK392-110 are available in Part Store.

Good luck.

Jan 15, 2009 | RCA D52W20 52" Rear Projection HDTV-Ready...

2 Answers

Is this a Convergence problem? With picture


Yeah, it is convergence. You can try a IC replacement yourself if you can solder and hour 3-5 hours to spare. Parts are $12-$60, depending on brand and quality. There are a few places that sell a repaired board for $140.00 and up.

Aug 20, 2008 | Sony KP-51WS500 51" Rear Projection...

1 Answer

Color convergence


RICKY-SOUNDS LIKE THE USUAL CONVERGENCE IC FAILURE.TRY LOOKING IN W/BACK OFF TV AND YOU'LL SEE COUPLE OF STK392-??? IC CHIPS,LOCATED ON A BIG METAL HEAT SINK.RETRIEVE THE EXACT PART # AND YOU CAN ORDER THEM AND INSTALL THEM YOURSELF IF YOU ARE GOOD AT SOLDERING ELECTRONIC PARTS,IF NOT BEST BET IS CALL AN EXPERIENCED JVC TECH.JOE TV

Nov 27, 2007 | JVC AV-48WP74 48" Rear Projection...

1 Answer

Toshiba TW56X81 Convergence issues


I retired from the TV repair business because if you are not an authorized repair service center most manufacturers will not even talk to you. If you are electronically inclined you can repair this tv. your problem is a bad convergence ic. you need to be able to locate it and replace it. it probably has about 15 or 18 legs that need to be unsoldered and a new replacement re-installed

Sep 29, 2007 | Toshiba TW56X81 56" Rear Projection...

1 Answer

Convergence always needs tweaking


This sounds to me as if you have a defective convergence output IC, whose gain is now sensitive to heat. As the IC gets warm, the gain changes and you see the colors separate. If you do not want to do any soldering then have the IC replaced by someone with experience in convergence circuits.

Jun 24, 2007 | JVC AV-48WP30 48" Rear Projection...

2 Answers

My Picture is in Red and Green??


This is a convergence problem. From your menu, go to Menu, Function, Convergence and then use you remote to try to adjust your colors. If you can not get them to line up this is a problem with the convergence board. The convergence amps (STK392-040 x 2)are internally shorted. These can be replaced or the whole convergence board can be replaced. It's cheaper to replace the amps, but more convienent to replace the board (especially for the less electronically inclined!! :) Hope this help you out....

Aug 22, 2006 | Akai PT4298HD Rear Projection Television

1 Answer

Red Convergence Popping In and Out, Mostly At Bottom


If you're NOT still under warranty you should at least open the TV you can check the board where the components are mounted and resoled any that look bad. In your case it could caused by a leaky diodes or a bad solder joint. All can be replaced at a local electronic or hardware store and they're easy to replace. Heres a little case study in changing convergance Ic's, First thing is they are the hardest working Ic's in this set, this is why they are mounted to a huge heat sink to disapate the heat, and they work as a pair, You would not just change one tire on the back of your car, both tires have traveled the same distance and to think the other is going to be just fine is insane, Always change convergance Ic's as a pair and in older sets change all three. And the other little problem Several manufacture make this Ic, the cheapest one may not be the way to go here I think five companys make the STK392-040 over twelve make the STK392-110, In the case of this hard working Ic it is always best to go with the original manufacture Ic Just as a example here at the shop my employer told our parts guy to find some cheaper Ic's ( The STK392-110 ) since we burn through about 50 a month he found them Not the Panasonics that I run for about $19.50 each but some japen semis for a amazing $4.95 each, he bought 100 of them. Now about 1/3 failed right off the get go, the other half failed within 60 days causing a call back and since we get to pick the set up for free it gets better, and all the rest never made it a year. So out of the $1455.00 saved by getting these cheepies cost us over $7850.00 in free labor. Guess which ones we buy now... Good Luck.

Jan 16, 2006 | Pioneer SD-P55A3-K 55" Rear Projection...

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