Question about Toshiba 42H82 42" Rear Projection HDTV-Ready Television

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Converge semicoductor How do I remove and install a converge semi conductor?

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Re: converge semicoductor

With skill and experience. need solder wick or solder sucker(radio shack) screwdriver set, needle nose pliar, solder and solder iron 35 40 watts. desolder the IC all legs on bottom of pc board. pull the ic out with needle nose, install new ic ,u might have to bend and straighten the legs, dont force it. now solder all the legs carefully. GGGGGOOODDDD LUCK!

Posted on Aug 17, 2007

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I have a convergence problem in the bottom of the lower left quadrant pf the screen. It is like a parabolic semi circle that is at the very bottom edge of the screen. The front screen isn't damaged at...

Tv 100% have a convergence problems,if any parts of the tv picture colors lines R,G,B are mis alignments,have colors shadows pictures or 3D pictures look alike?The tv convergence board the 2 STK ICS and some or all it resistors are dead.These parts on the tv convergence board,must be replaced to solved the tv pictures convergence problems.The shop,will cost u like $300-350 for parts and labors.

Nov 23, 2010 | Panasonic PT-47WX49 47" Rear Projection...

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Distorted picture

You have a convergence problem.On this model you can change the convergence amp board which has the convergence IC's on it making it an easy repair.

Oct 06, 2007 | Samsung HC-P4752W 47" Rear Projection...

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Can i replace the chip stk 392-570 to stk 392-560 is that ok ?

I would definitely stay with the original stock number. Always a good rule, unless an authorized repair is warranted. As for resistor replacement any philips, NTE or RCA or an MCM stock number will be sufficient! You will need lots of patience and care as well as caution in removing and replacing any semi conductors. Good Luck...letme know how you fair! Thanks for asking!

May 09, 2010 | Mitsubishi WS-65807 65" Rear Projection...

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The colors aren't matching up I have green semi

Yoy have convergence issue with tv,try the magic focus/touch focus or manual adjustment in the menu under convergence, if can't be adjusted then your convergence ckt is the problem,you will need a tv tech to repair it.

Mar 19, 2010 | Mitsubishi VS-50605 50" Rear Projection...

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I pushed flash focus button on the front and now my t.v.s convergance is distorted and cannot move the crosses to align.The other is my screen projection is semi circled

Two convergence o/p IC's STK need to be replaced. and check pico fuses adn resistors in the area - with this model the complete pwr/conv/defl. board should be removed to replace the IC. Not ajob for a novice.costs between 200-400

Oct 07, 2009 | Sony KP-46WT510 46" Rear Projection HDTV

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Mitsubishi ws-55809 goes to white foggy screen occasionally

It will cost between 30.00 - 70.00 dollars to do it yourself depending on if you buy the parts seperate or as kit.

You can see some examples and find a fix here...

Sep 25, 2009 | Mitsubishi WS-55809 55" Rear Projection...

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Bright blue semi cirle on my prjection tv, lower


you have defective convergence correction circuit! this parts needs to replace a new one!


Jun 05, 2009 | Samsung HCM5525W 55" Rear Projection...

1 Answer

JVC AV48WP30 convergence ic

I'm in the process of trying to replace both convergence IC's in my JVC also. I was able to buy both IC's (they look like black semi-rectangular components with 20 pins sticking a computer chip only much bigger) at a TV repair shop for about $15 each. They were clearly labed STK392-110 (but could be 150 or 180 if you wanted to upgrade).

Jan 18, 2009 | JVC AV-48WP30 48" Rear Projection...

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R52wh74 Convergence

If the convergence option is not on the menu anylonger. thats another issue all together. That is usually a fusible link and capacitor on the deflection board that will cause that to happen. The convergence ICs will also need replacing as the link and capacitor will most certainly take out the convergence ICs as well. You will need a service manual on this issue. Let me know and I will post a link where you can get one along with some free support to help you with it.

Mar 18, 2008 | RCA R52WM24 52" HDTV Projection Television

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Blue convergence will not move left or right

look at the convergance board it will be the one on the left there re two stk semi-conductors tward the back of the board. most likly one of them are bad but sometimes the soldering can be faulty. look for signs of cold solder if so just resolder and should be good if not also look for burnt resistors. it will be obvious finding the stk 's can be done by using google and just type in the stk # finding the resistors you might try calling panasonic to find the part #by telling them the location of the burnt resistor. good luck. mind you that the soldering of the stk (semi-conductors) you will want to use a heat sink on each terminal you solder otherwise you take a chance of burning the conductor befor you ever get to use it, if you have no exp. soldering i wouldnt sugest trying it !!!!

Oct 17, 2007 | Panasonic PT-61HX40 61" Rear Projection...

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