Question about Hitachi 43UWX10B 43" Rear Projection Television

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Convergience The convergience is slightly off on the entire screen but especially bad at the top left. Too bad to adjust. There is some defect somewhere. Please help. If I need a new part, which part? I have a schematic. Cancun Kid

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Re: convergience

Hey Cancun,Ill be able to Answer this on Tech Support my Screename ttech

Posted on Jul 20, 2007

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I have a model 60PP9202 60" Phillips projection TV that has color convergience problems. It started a few years ago when the TV wouldn't turn on at all. After unplugging it for several hours, it...

Below is a link I have included. This is a site I use to repair parts in projection tvs. The kit includes detailed instructions on how to repair it yourself. If this told you something you did not know rate this solution as very helpful as I do this here for free.

ALSO, if you have questions reply to this posting and I will assist you--I am here to help.

Jan 05, 2011 | Philips 60PP9202 60" Rear Projection...

1 Answer

How & where do you install stk392-180 for a toshiba tz55v61

You have two convergence amps that need to be replaced on the convergence board.This is a very common problem with these units.The part # are STK392-110 but I would upgrade to a STK392-120 or a STK392-150.Also there may be a couple of low ohm resistors that need replacing.Depending on your electronics experience this job is pretty much a straight forward soldering job that requires a certain amount of knowlege.These parts can be obtained from as a technician charge between$185.00 in shop and $250.00 inhome for this repair.It is well worth it as this particular chassis really did`nt hve very many problems, and once fixed you will have a like new picture.Good luck!!!

Dec 31, 2008 | JVC AV-56WP30 56" Rear Projection...

1 Answer

JVC av-56pw30 Picture Adjustment

Sounds like you have a convergence problem and the set will require repair. This repair will run somewhere around $400 if you have a good company complete the repair for you.

If you are interested in doing this repair yourself you will need to be able to use a meter and solder VERY well.

If you have more questions please email me.

Thank you,
Tim Nolan

Oct 11, 2008 | Projection Televisions

2 Answers

KP-61HS10 with 6 blinks

Set screen voltages. To get to the adjustment board, take the front speaker grill off (two screws at the bottom left and right) and set it aside. No need to disconnect any wires. Then remove the plywood board with 4 screws that exposes the screen/focus adjustments. The top 3 adjustments are for focus, and you need not mess with these. The bottom 3 adjustments are for Red/Blue/Green screen voltage rough adjustments. My screen showed red lines, so I had to turn the bottom right adjustment with a philips head screwdriver just slightly until the red gun retrace lines where no longer visible.
Hope This Helps

Aug 19, 2008 | Sony KP-51HW40 51" Rear Projection...

1 Answer

I want to fix convergience myself....what or where do i go?

Go to the following link and leave a email with the model number of your set and what ist doing and they will respond quickly with the info you need they have any part you would need for your RCA and they give free tech support with their parts.

Jul 04, 2008 | RCA D52W20 52" Rear Projection HDTV-Ready...

1 Answer

Bent picture

Not sure if you fixed your problem already. But the answer is a color convergence problem. You can try adjusting manually via the remote and if that doesn't work it is most likely the two main IC chips that control the color convergeance. It is also possible that not only the IC chips have gone bad but also there are a couple of resistors that usually burn out with the ICs as well. They will need to be replaced. This isn't something that I would attempt on your own. Typically a TV technician will charge between 300 and 400 to fix at your house.

Mar 15, 2008 | Philips 60PP9363 60" Rear Projection...

1 Answer

Thin red horizontal lines across screen

While looking at your TV, remove the bottom right speaker grill. There you will find a cover held by a couple of screws. Remove the screws and behind the cover you will find the "focus pack" which is a group of 6 adjustment screws. The top screws adjust (in order from left to right) the brightness of Red, Green and Blue.

What you will do preferably at night (or with the room dark) turn the top left adjustment screw (Red) all the way to the left and then gradually turn it to the right until the point you can see the retrace line and then turn it slightly to the left until the retrace line disappears. That's it! You can do this for all three colors - if need be. These do go out of adjustment every now and then. The 3 screws on the bottom are to focus the colors individually to minimize "bloom" on the screen. It's best to be in service mode on your TV when doing this OR open up the cabinet and cover (with something) the other 2 colors while you adjust the focus of the color you're adjusting.

Good Luck!


Mar 13, 2008 | Sony Grand WEGA KDP-57XBR2 57" Rear...

1 Answer

2 1/2 years new Samsung HC-P4752W from Costco, Canada

Samsung makes a great product and has one of the best pictures out there. I have had mine for a couple of years and only experience a slight convergience issue on left and right sides of the screen after twenty minutes of run time. I am currently trying to figure out how to fix it.

Jan 26, 2008 | Samsung HC-P4752W 47" Rear Projection...

1 Answer


This may not be the problem, but the following service bulletin may be of interest:

Last Update: 1/25/2006
Document Reference/Event ID: E30094243
Subject: Picture might have a slight Greenish tint.

Under certain conditions (especially cold/ first power ON), white areas of the picture may take on a slightly greenish tint after power on until internal temperature stabilization is achieved. Typically, this disappears after approximately 10 minutes operating time, however, in certain cases (i.e. colder conditions) the set will continue to fine tune the picture longer that 10 minutes. This is in order to create optimum picture performance under nominal viewing conditions.

This is not a defect but a characteristic of the LCD panels. Be assured that the time it takes to disappear will neither lengthen nor reduce over time.

If the condition improves but reduction in effect is desired, there are customer adjustments that can minimize this condition. Please demonstrate these adjustments with the customer, to determine if these settings are acceptable. (User adjustments are supplied in Solution A)

In cases where no Uniformity improvement is achieved (after 30 minutes power on time) proceed to Solution B; Optical block

Please be aware that all Optical Blocks exhibit warm-up behavior.
Replacing an Optical Block will not eliminate or significantly reduce the time below 10 minutes.


Internal temperature stabilization needed.

Solution A)

You may reduce this effect by changing some user settings as follows:

(1) Change the Color Temperature setting to Cool - (refer to page 81-82 of the instruction manual). If further reduction is desired proceed to step 2.

(2) Slightly Reduce the Green bias (only available in PRO Picture mode under Advanced video settings), then select white balance Adjustment - (refer to page 81 of the instruction manual). Example:
a. Menu, Video, Picture Mode, Pro Mode
b. Menu, Video, Advance Video, White Balance, G-Bias (Reduce several steps)

Solution B)

Replace Optical block after gaining approval from Sony Tech. line.

Jan 23, 2008 | Sony KDS-R50XBR1 50" HDTV

3 Answers

Sony 51inch tv blue screen appears

could be a blu tuibe but also i've seen many bad sony CRT Drive bds(the circuit board connected to the neck of the tube). You won't find really any place cheaper than the next if your a consumer. just try Oh, and forget about sony paying for it 4 years is way out of warranty.

Apr 22, 2007 | Sony KP-51HW40 51" Rear Projection...

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