Question about Toshiba 42H81 42" Rear Projection Television

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Red Convergence Hairs will not move side to side. do move up and down

The red convergence is way off to the side Horizontal. This happened all at once. Not sure if it is the ICs or the output resistor. Any sugesitons?

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  • kurty18 Oct 24, 2008

    Forgot to mention that the red hairs will move up and down.

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  • 934 Answers

It's most likely the Ic's but do test the return resistors for any change in value before closing it up.. It will add a greater reliability to the repair.
Bill

William Rayburn, CET
Premium Technologies
PO Box 442
Long Beach, WA. 98631
360-642-4993

Posted on Oct 28, 2008

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1 Answer

How do you access the convergence calibration menu on a RCA P52926 Rear Projection TV


Hello
To access the convergence calibration:

Press the MENU button on the remote.

2. Press 3 to select the Screen option.

3. Press 4 to select the Adjust Projection TV option.

4. Press 4 to select the Advanced Convergence option (the
Advanced Convergence screen appears).

The green pattern is fixed. The red and blue patterns are adjusted to

the green pattern. The Red Convergence appears first by default.

5. Colored cross-hairs show the current adjustment position on the

grid. To move the cross-hairs to a different position, use the

CH+/- buttons on the remote to move the cross-hair highlight up

and down, and the VOL+/- buttons to move it right and left.

6. Use the arrow buttons to adjust the red pattern. Each press of

the arrow button makes a slight adjustment from the center of

the cross-hairs - you can press and hold the desired arrow

button to make a faster adjustment, and then make fine

adjustments with single presses of the arrow button.

7. Press the INFO button to switch to Blue convergence and follow

the steps above to adjust the blue pattern.

8. Press OK to exit. You will be asked if you want to save the
adjustments

Yes Saves adjustments.

No Returns to the Advanced Convergence screen allowing

further adjustments.
Clear Exits screen without making any changes

Note: Before you use the advanced convergence feature, you must
complete the previous steps to align the tubes

May 19, 2011 | RCA P52926 52" Rear Projection Television

1 Answer

I just moved my 42in. Toshiba rear projectiom Tv from my basement to the upstairs and now my convergence is off. The red tube cross is low on the manual adjustment and will not go up to the other colors.IT...


It sounds like you jostled the red CRT gun when you moved the set. If the convergence adjustment still moves the red cross hair the the circuitry is okay. Your red gun needs to be realigned. This requires a service call unless you want to attempt it yourself. It is fairly involved and requires some specific tools as well as using the service mode on the remote to reset the convergence after the gun is repositioned.

Dec 06, 2009 | Toshiba 53H71 53 in. Rear Projection...

1 Answer

Where are the convergence chips located on my 60PP9202 for the red


There are 2 Convergence Chips: 1 for Horizontal (it includes Red, Green and Blue Convergence channels) and 1 for Vertical (it includes Red, Green and Blue Convergence channels). Horizontal Convergence Chip is 7044 and Vertical convergence Chip is 7045 (both STK392-120). They are fixed in same "big" Heat Sink, with a 2 metal black clips, from Video Inputs board side.

Oct 19, 2009 | Philips 60PP9202 60" Rear Projection...

1 Answer

Colour does not match up on one side to the screen it red & blue


Sounds like a convergence problem. Try to adjust the convergence. If the cross hairs won't move, you will need professional assistance.

Oct 14, 2009 | Projection Televisions

1 Answer

Remote will not adjust red convergence/multi-point horizontally


check resistors around convergence i.c.(red) philips may use 2 resistors in parallell. should be about 1.8 ohms. assuming you already changed the i.c.

Jan 17, 2009 | Philips 55PP9352 55" Projection Television

1 Answer

Mitsubishi VS50805 Serial # 102718 No red in picture


Replace the convergence ICs your model uses two STK392-040 Convergence ICs. You can get replacements at the following link with instructions.
http://servicemanuals.vstore.ca/

Dec 28, 2008 | Mitsubishi VS-50605 50" Rear Projection...

1 Answer

Pioneer SD-641HD5 red convergence - not chip problem!


Replace Both of your STKs if they are STK392-110s do not go back with them use STK392-180s better ICs, The 110s fall apart and do not hold up.

Nov 12, 2008 | Pioneer SD-533HD5 53" Rear Projection HDTV

1 Answer

Convergence


When this happens it means the convergance Ic's have failed ( STK392-110's) they will need replacing then the cross hairs will move again

Feb 07, 2008 | Panasonic PT-56HX40 56" Rear Projection...

1 Answer

No horizontal red convergence control


Probably the red convergence output IC has failed. The chip is basically a stereo amplifier that serves as a horizontal amplifier and a vertical amplifier. I suspect the vertical part has failed and is not uncommon. Should be generic STK392-150's or maybe STK392-110/120 I believe. By the way when the line moves up and down that means the vertical is working when it moves side to side the horizontal is working.

Feb 03, 2007 | Philips 60PP9202 60" Rear Projection...

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