Question about Zenith R45W46 45" Rear Projection Television

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I have a zenith 46inch pro wit convergence problem out of the 1-9 areas 1,7,8,9 are messed up. Can this problem be fixed by changing a board or is it more complexed than that

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This problem can be solved by replacing the convergence chips. Usually this is the less expensive way to go. I have personally done this repair on about 10 sets identical to yours for this problem. After disconnecting the power I remove the rear cover and disconnect the convergence board which is the one on the left. Most of the time I take the board, replace the parts which have to be unsoldered, removed and new ones soldered in place. Within a day or so I return and reinstall the board and clean and adjust the set. The cost for in-home service, parts and labor may run between 200-300 but this television seems to be otherwise problem free. Good Luck, Russmann.

Posted on Sep 10, 2010


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We moved the TV and it now has color shadows, blue,red and yellwow. It looks llike 3D. In the past I did auto convergance and it fixed itself. This time it will not adjust itself. is this something I can...

You need to Change out the Convergence ICs they are Big Black ICs and will have the part number on them STK392-570s I think is what they use in this model.
Mats Electronics has ICs 1-800-628-1118
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Zenith Exchange Moduels 1-800-632-6637
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You will need to know How to Enter the Service Menu to bring up the Convergence Pattern in order to adjust the Convergence,another thing is it depends on which chassis you have RCA had bought the right to use the name Zenith, when in fact these TVs had RCA Chassis and not Zenith Chassis
Remove the back to Tv, Make sure TV is unpluged and look to see if you have on a board Located on the right hand side
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But if you have the RCA Chassis then you will have 2 bottom boards one on the Left hand side will be the Deflection board it will have the FBT flyback transfomer on it and their is 2 Ribbons that connect to the board on the right handside which is the ssb board that has your cable/AV input jacks on it.and their will be 2 boards above the 2 bottom boards if these are the boards you have then you can with Tv Off Press and Hold vol- and ch- wait untill TV comes on,release buttons and then you should be in the service menu to adjust convergence manually. R/G/B
For these chassis PTS rebuilts boards 1-800-844-7871

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1 Answer

I have a zenith rear projection screen.the left half of the screen is fine.the whole right hand side has a green tint and has double vision.

Bad convergence causes this replace STKs or whole convergence Board STK ICs are big black ICs will have part # on them STK392-110s call Mats for STKs 1-800-628-1118 or to replace whole board call Zenith exchange 1-800-632-6637 they even have power supply boards when in stock or they can rebuilt your board.

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One color Bow-tie Effect.

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It looks like blue convergence. Look at menu, select convergence and see if blue top is bent down on convergence adjust screen. Probably won’t adjust.

Some Samsungs have convergence IC’s on a separate convergence board in the back of the TV. Others have the IC’s mounted on the main deflection board. Either way the board has to be removed to get at the dud IC’s and associated burnt resistors.

You remove the appropriate board, determine if any resistors are burnt or damaged, replace any burnt or out of tolerance resistors, replace 1 or 2 IC's and re-install the board.

Now you have to adjust it to look like new.

If the unit has not been misadjusted and everything is OK now, running the auto focus may put the picture back to it’s previous stunning quality as it was before IC failed.

If after Perfect Focus it is still misadjusted noticeably, try the customer convergence adjustments. Operators’ manuals are available on web through searching.

If convergence can not be adjusted properly, you messed up chip install or resistors may be wrong value or open; or it needs major adjustment.

If you live around Calgary, Alberta try me instead:

Or try to the find the repairperson part of this website (on the Homepage) and search postal code. Maybe you will be lucky and someone from your area is listed for Projection TV repair.

Most rookies doing this job will cause damage and not be successful. They will pay double for someone to fix their mess or end up scrapping the TV. It is not a simple task. It is more difficult than batteries on a remote.

Good Luck


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