Panasonic PT-51HX41 51 in. Rear Projection Television
Problem for Panasonic PT-51HX41 51 in. Rear Projection Television

Colors are doubling like shadows




By ethelihex on Nov 01, 2009

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colors are doubling like shadows

Best Solution

posted on Nov 02, 2009
Very Helpful)

asnowman

Rank: Guru  Panasonic Televisions & Videos  Expert
Rating: 96%, 592 votes
What you might be experiencing based on your symptom sounds like a damaged convergence IC.

With any Projection Television that has a damaged convergence IC, you do not want to continue the use of the set. If the IC’s continue to fail they will cause a short in the power supply and cause your television to not power up, and possibly damage the CRT’s in the set.

With that aside I have some support suggestions that I have put together that may help you make an informed decision.

You should be able to get a local service center to repair this at your house for between $350.00 - $450.00, If you want to repair this set yourself, I have some instructions below that will be a help to you.
While it is not a very hard repair, this repair can be a bit tricky. If you have a 45W soldering iron, solder, solder wick, and heat sink compound you can repair it yourself.

When you remove the old IC's, please be sure to remove all of the old heat sink compound, as it can act as an insulation for the new IC's and cause them to overheat. I usually clean the heat sinks with alcohol and a small rag.

There are two and large IC’s that control the convergence in a big screen set. Some of the newer sets only have one. If you only have one, it is right in the middle of the set on the center circuit board. They are secured to a very large aluminum heat sink. They will have a part number stamped on them that will start with an STKXXX-XXX, like STK392-110.

Along with the convergence IC’s there will also be some associated components that will need to be replaced as well. There are some resistors that are part of the convergence circuit that will be open and need to be replaced. Most likely these will appear charred in the center. If you have an Ohm Meter or a DVM, check all the resistors that are close to the IC’s and you should be looking for either ones that have opened or have changed values.

If one of the convergence IC’s are found to be bad, I would replace them both, if one has gone bad the other may go soon. I usually order my parts from Andrews Electronics in California, they will have the OEM components that you will need.
Their site is
http://www.andrewselectronics.com/welcome.aspx
And their phone number is a 24-Hour Order Desk: (800) 274-4666
I recommend the phone order so you can talk to the person about the different types of IC’s that are available.

I would also advise that the convergence IC’s be OEM or better, just because they are cheap does not mean that they are a good deal. I have seen the cheap IC’s fail after a short time, even though they look exactly like the OEM IC’s. I think that the bottom line is that you will get what you pay for when it comes to the parts.

You can also try
http://www.tvrepairkits.com/ , I have not tried them yet, but they do carry OEM or better parts.


I hope this information allows you to resolve this issue.
If you need further assistance please comment to this post and I will try to help you further.

Thanks for using FixYa
asnowman


I have attached some photos of really bad convergence problems; your picture may not be exactly as bad as these.




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Solution #2

posted on Nov 02, 2009
Not Rated)

Slinteriors

Rank: Guru  Panasonic Televisions & Videos  Expert
Rating: 89%, 3765 votes
Tha panasonic type 1 convergence repair kit at the following link should cure the problem . http://servicemanuals.vstore.ca/
The kit contains the parts and CD with instructions.
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Solution #3

posted on Nov 01, 2009
Not Rated)

tlm931

Rank: Guru  Televisions & Videos  Expert
Rating: 90%, 61 votes
you have a convergence problem there are a couple ics and possibly some resistors
you can change these your self
if you have the tools and soldering station and some know how
or you may want to contact a local in your area for assistance
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