Question about Panasonic PT-51HX41 51" Rear Projection Television

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Panasonic PT-51HX41 yoke adjustments

Does anyone know skinny on adjusting CRT yoke to get outer convergence squared away. I have already replaced STK's and all out of specification resistors. Red acts funky when attempting size adjustments as well as linear movement. Please advise if can help me out!!

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  • Darren Rudley Sep 07, 2007

    Thanks Crazylarry I did want to mess with that yoke but I wanted this puppy fixed.



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Go back and check them resistors....with a magnifier and be sure of the color codes...I bet one is way off. and get the manual out confirm each resistor u replaced and even remeasure it. dont mess with yokes or nothing on them tubes! its on the board....check for solder splash too on bottom or shorted pins on stks. if you must just make a big x on screen from corner to corner now cover red and blue tubes. the green should be in center of the x if not move the adjusting 2 magnets near yoke to center it it will have tabs sticking out u might have to move both. after you center adjust red and blue to green. good luck

Posted on Aug 17, 2007


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Boe in blue dynamic convergence curcuitry. Swapped deflection yoke on two tubes but problem still remains. Unplugged convergence plug on yoke and bow disappeared but unable to adjust dynamic convergence....

what's the number of the board where you unplugged the conv yoke, should start with 930_ that is the board you need. Try the with the part number or type in the brand and model when you have the number on the board, and they display price and availability.

Jan 15, 2010 | Mitsubishi VS-45609 TV

1 Answer

I have a problem with my hitachi. The picture has vertical blue/yellow stripes. Probably due to a green color split. Can you diagnose my problem?

You probably have a convergence circuit failure. Replacing the Convergence IC's and check for any open resistors for the Blue Sub Yoke located near the Sub Yoke Connector should cure the problem. Most of the IC's are
STK-392-110's, STK-392-120's, or STK-392-150's. Replace them as a set.
Hope this helps,

Jun 25, 2009 | Hitachi 50FX18B/19K 50" Rear Projection...

3 Answers

Power light blinks off and on, nothing else

try unplugging the three convergence yokes then try powering up the set to see if it powers up. If it does replace both convergence ICs

Feb 03, 2009 | Toshiba 55H70 55" Rear Projection...

1 Answer

Mitsubishi WS 55819 with a convergence


Nov 22, 2007 | Mitsubishi WS-55819 55" Rear Projection...

2 Answers

Convergence issue, green line grid out of square

most likely you have bad connections on green stk solder the connections or replace the stk check all fuses too

Nov 15, 2007 | Hitachi 57TWX20B 57" Rear Projection...

2 Answers

RCA P46159 Convergence

Why would the set go out of adjustments? I highly doubt if the set needs only alignment. These adjustments are for small drifts only. If anything is way out more then what the on screen can adjust, you have a problem with the convergence correction circuit. There is a convergence power supply in this set that goes bad a lot in these TV sets. There is also a convergence driver board. These RCA sets do not have the integrated IC's like most sets do. Each convergence yoke, horizontal as well as the vertical, has two independent power amp circuits driving them. And that's for all there tubes. So there are 6 separate amps controlling the convergence in these TV sets. You really should call in an RCA authorized repair shop to assist you in this repair. Good Luck

Oct 01, 2007 | Televison & Video

1 Answer

Adjusting CRT yoke for convergence

You shold not have to move the yoke. if the set will not adjust, find the problem in the convergence. It is probably an IC starting to fail. Good Luck

Aug 15, 2007 | Panasonic PT-51HX41 51" Rear Projection...

1 Answer

Course and fine Convergence adjustments

You don't need to raplace all the resisters! Only the bad ones. Remove one lead of each fusible resister out in front of the STK's & check for the ohmage by their color band. You will find the bad one or two resisters causing your problem.

Jul 20, 2007 | Panasonic PT-51HX41 51" Rear Projection...

1 Answer

Convergence adjustments

did you use the proper STK IC's Do the replacement IC's have SANYO on the face of them? If they do not, this could be your problem. You must use the IC that the manufacturer recommends. All IC's are not alike. Go to MCM electronics and enter your IC number and they sell original SANYO IC's. Good Luck

Jul 18, 2007 | Panasonic PT-51HX41 51" Rear Projection...

3 Answers

Convergence problem

We need a better description of what you mean by shadowing. However I am assuming: 1. You mean it ''bleeds'' off to the right when you have something with a hard red/blue drive. 2. When you turn the contrast and color down a bit it gets better. unfortunatly I cannot tell you how to fix convergence, but I can think of some other possibilities. In this case the red/blue emmision of the crt is dying off and going into saturation when driven hard. To fix, replace with a new picture tube/crt. In some cases you can get a little more life out of that tube (with a watchable picture) by having the screen, focus, cathode bias, and drives slightly readjusted. It will take someone with experience in doing these adjustments on a weak tube to get it looking as good as possible. Given the construction of the cathodes (guns) in that crt, only a very low level crt reactivate should be tried on it. The hard rejuv most crt testers give is highly likley to completely destroy the cathode on that crt.

Mar 22, 2006 | Toshiba 55H70 55" Rear Projection...

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