Tech Support

Home | Panasonic | PT-53TW53 53 in. Rear Projection HDT... | Convergence blue sto...

Panasonic PT-53TW53 53 in. Rear Projection HDTV-Ready Television

Problem for Panasonic PT-53TW53 53 in. Rear Projection HDTV-Ready...

Convergence blue stopped working. Unable to adjust

By pilotbob874 on Sep 29, 2009

" "

convergence blue stopped working. Unable to adjust with controls. what board is it that controls it? The blue is still firing but other colors are starting to waver.

Ads by Google

Best Solution

posted on Sep 29, 2009

asnowman

Rank: Guru Panasonic

Expert
Rating: 95%, 610 votes

Your symptom sounds like a damaged convergence IC. They are on the Signal board on the left as you look from the back of the set.

There are two and large IC’s that control the convergence in a big screen set. 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, and they are located on the signal board (on the left as you look into the back of the set).

What happens in the Panasonic set is that the convergence IC’s will short and cause the power supply to shut down from the overload of current. 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.
There are also two resistors on the front of the board located in the middle that are fusible link resistors, these should be checked for opens and replaced if they are found so.

I would suggest that you contact a service center in your area for a complete diagnosis and repair, as this type of repair can get a little tricky. But if you want to repair the set yourself, just remember to be careful. The capacitors and CRT’s can hold a charge and may shock you.

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.

Was this helpful?

Yes

3 people thought this was helpful

Asker's Testimonial

" Thanks for the fast reply. I did some research and it is exactly what you posted. Thak you very much. " - pilotbob874

Questions and Unsolved Problems for Panasonic PT-53TW53 53 in.

Do you recommend Panasonic PT-53TW53 53 in. Rear Projection HDTV-Ready Television?

Answer

Panasonic PT-53TW53 53 in. Rear Projection HDTV-Ready

My Panasonic PT-53TW53 53 has no...

Answer

My Panasonic PT-53TW53 53 has no picture and no sound this morning. The red light is blinking 5... (More)

Panasonic PT-53TW53 53 in. Rear Projection HDTV-Ready

blinking power light

Answer

When i turn it on the screen is really blurry, and after a few seconds the screen goes black and the... (More)

Panasonic PT-53TW53 53 in. Rear Projection HDTV-Ready

what size screws attach the tv to...

Answer

what size screws attach the tv to the base? tv is insigina ns-lcd32-09, can you help? We called the... (More)

Panasonic PT-53TW53 53 in. Rear Projection HDTV-Ready

my tv. wont turn on and no sound....

Answer

my tv. wont turn on and no sound. But I hear a wierd noise.

Panasonic PT-53TW53 53 in. Rear Projection HDTV-Ready

my bottom part of tv to the left...

Answer

my bottom part of tv to the left side became a little wavy and it's showing double and you can see... (More)

Ads by Google

See more Panasonic PT-53TW53 53 in. Rear Pro... Problems

Answer this problem

Ask our Experts

Solve Your Problem Now!

Chat Live with an Expert

Chat Now

Top Projection... Experts

Chu3505

Rank:

Guru

Expert

Rating:

85%, 541 votes

ladywinn

Rank:

Guru

Expert

Rating:

86%, 1000 votes

SD Tech

Rank:

Guru

Expert

Rating:

97%, 1181 votes

Find more Projection... Experts

Top TV Repairmen

Ron's T V &...

(316) 283-8873

Cys TV & Appliance...

(316) 838-0811

Authorized Warranty On Rca,Integrity In Sales...

Get Listed!

Best Projection Televisions
Recommended by Owners

Mitsubishi WD-60735 Television

Mitsubishi WD-65735 Television

Mitsubishi WD-73736 Television

Solve Your Problem Now!

Chat Live with an Expert

Chat Now

Solutions to Most Common PT-53TW53 53 in. Rear Projection Problems See other Panasonic Projection Televisions See other Panasonic Products See other Projection Televisions All Brands Find Tips Holiday

Browse Experts Popular & New Find Products Find Cars Find Manuals Find Warranty Service Plans Repair Service Directory Reviews & Ratings Tags

About FixYa News and Media Contact Terms Privacy Policy

Blog Advertisers Partners Careers FAQ

Click to verify BBB accreditation and to see a BBB report.

FixYa does not evaluate or guarantee the accuracy of any information provided through its proposed solutions, posts, or Expert Assistance Sessions. By entering this site you declare you read and agreed to its Terms. You may NOT copy or distribute the content that appears on this site without written permission from FixYa Ltd.
© 2005-2009, FixYa, Ltd. or its affiliates