Question about Panasonic PT-53WX53 53" Rear Projection HDTV-Ready Television

2 Answers

3 flashing lights when attempting power up

Your answer:
That is indicating that the convergence circuits have shutdown the set. You will need new Convergence ICs. They should be STK392-110 or STK392-120 either number works the 120 being the better chip. I will post a link where you can get the new ICs and they provide step by step instructions with pics so you can do the repair yourself. You will find your IC numbers under the section titled Convergence ICs just click on that and you will find your STK numbers.

can this repair be done by most anyone?

Posted by on

  • martinguy Apr 07, 2008

    does this blog show the basics of getting to the convergance ICs

    and the link you provide on the parts page take you down the same path?

    Also any other links to prep me for the task? As you can tell I'm willing (to save huge bucks) but slightly intimidated. I'd really like to study up on the process just a bit. Make sure I can avoid the big mistakes.

    This is extremely helpful.


  • martinguy Apr 07, 2008

    I think I forgot the link I referenced. Sorry


2 Answers


Posted on Apr 07, 2008

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Yes It is a simple repair as long as you have the proper instructions and have the tech online while your doing it. The link I posted has excellent instructions with pictures and I am one of the support techs that provides the on line instant messaging while the repair is being done. The instructions even explain the proper way to solder and unsolder right down to the type soldering iron to get at radio shack. However the site does offer a service where you can ship the board to them and they will install and ship it back to you.

Posted on Apr 07, 2008

  • Sonny Berry
    Sonny Berry Apr 07, 2008

    Yes thats a good blog. Its actually a easy repair. If you order the parts from the link I provided they will have a tech online that you can instant message while doing the repair hust in case you have any questions before, during or after the repair. Heres that link again in case you want it.


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1 Answer

Toshiba 51hc85 will not show picture red power light flashes where is reset button and or fuses What else could it be

This set does not have a reset button. The flashing light means shutdown and the most common cause is a short in the Convergence circuit.

Way to prove or disprove this is someone has to get at and unsolder both chips used--usually two stk-392-110 or similar--18 pins each.

If set comes on then one chip is bad but both must be replaced.

There are resistors around the chips that fail and that triggers the shutdown. Also most of these have pico fuses that are not glass and are tied to different areas of the set--one of them goes and shutdown is the result--they are green or orange and look like a resistor but have the amperage marked on the board next to them---two of them protect the convergence circuit and are usually 3 to 5 amp---can be tested with set unpowered just like any fuse--no reading across and bad.

set may have as many as 7 of these all in or near the power supply.

Nov 06, 2012 | Projection Televisions

1 Answer

My tv button keep flashing on and off how can i fix this

I am more than willing to help but need more information.

If the red power light is just blinking when you try to turn the set on it means the set is in protective shutdown.

The most common cause for this is one of the two convergence chips used is shorted.

I can tell you how to prove if this is the case or not, I have answered a lot of questions here and am highly rated. I never know the skill level of the person asking so try to tell me something:

Can you solder? If I point you in the right direction (only one I know) can you attempt something?

I am here to help and not talk down to you but some people can attempt what I have in mind and others cannot.

In this case it would involve getting at the two STK-392-110 convergence chips and unsoldering both---if one is causing the problem the set will come on with them removed from the circuit and you will have a fairly inexpensive repair.

The more you tell me the better I can help you.

Before you rate this information let me know what you can or cannot do.


Aug 16, 2011 | Toshiba 55H70 55" Rear Projection...

1 Answer

When I attempt to turn on the TV the green power light will stay on for about 2 seconds. Did system reset with paperclip, timer light flashed for 1 minute. Tried again with same result.




PRESS AND HOLD "device" and "menu"buttons on front of tv for at least 5 seconds and then release both together.

Watch for power light to blink in a sequence:

1 blink-then 2 blinks-------no error

2 blink-then 1 blink-------X-ray protection

2 blink-then 2 blink-------SHORT PROTECTION*******

2 blink-then 3 blink---------deflection circuit problem

2 blink-then 4 blink---------vertical circuit problem

******2, then 2 is most common---usually means one of the fuses that protectthe Convergence IC or IC's is blown---set will detect no voltage to convergenceIC and shut down.



let me know what you find--hope that you find 2 blinks, a pause and twoblinks--this is the most common and easiest to fix.



Jul 15, 2011 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

No pictuer no sound

your user manual will have the flashing light code structure indicating the fault that caused the shutdown there is no thermal fuse in your TV

projection TV`s have integrated protection circuits
built into the circuit design, these circuits turn the
power off automatically when a fault has bin detected this
is in order to prevent a more costly repair, these circuits monitor
power supply , vertical and horizontal deflection
over voltage, or x ray, and also faults with convergence circuits.
Diagnosing these faults require test equipment and a good knowledge of
electronic repair techniques, and also a repair manual.

Apr 28, 2010 | Sony Grand WEGA KDF-42WE655 42" Rear...

1 Answer

My screen is blank and the power button keeps flashing blue

AV56wp74? The power button blinking blue means the set is in shutdown----the most common reason for this in this set is one of the two convergence chips is shorted. The way I usually prove this is to remove rear cover and or front grill and examine convergence circuit located at the front of the set----Also--I will unplug the plug from that circuit board that goes to the TV's power supply---if the set turns on with the convergence circuit board unplugged from it---you know your trouble is one of the two chips---if this is the case both have to be replaced and the set adjusted.

I do this here for free so if this has helped you give me a vote here. If you have questions or need help let me know.

Aug 27, 2009 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Blinking red light

Your TV is in shutdown. Unplug the set from the wall and wait 30 seconds. Apply power and see if the set comes back on. If the problem is the same (red blinking light) then you need to call a repairman. The most likely suspects are the convergence chips , vertical loss, power regulator or horizontal circuit problems. The shutdown circuit monitors multiple circuits for voltage and current malfunctions. That is why you need someone trained to troubleshoot the problem. Good luck!

Nov 23, 2008 | Toshiba 57H81 57" Rear Projection...

1 Answer

Green Flashing Light

There could be a variety of problems:

1- CHECK FOR 12 VOLTS DC (AC-OFF DETECT) AT PIN 3 OF PC9A21 IF MISSING REPLACE PC9A21 PART # 268P058020 ON THE POWER PCB. 2. SHORT DETECT SHUTDOWN (PIN 13 OF IC700) CHECK FOR OPEN L902 PART # 351P155010 OFF Q904 C (15 V SUPPLY) ON THE MAIN PCB. 2- SHORT DETECT SHUTDOWN (PIN 13 OF IC700) CHECK FOR SHORTED D913 PART # 264P722010 AND OPEN Z901 PART # 283P039020 (Z905 AND Z900 M. 3- CHECK FOR BAD CAPACITORS IN DM MODULE. 4- CHECK FOR 10 VDC AT PIN 5 OF IC502 OF LOW, CHECK IC503 PART # 270P704010 ON THE MAIN PCB. 5- SUSPECT SHORTED WINDINGS OF T5A31 PART # 349P216010 ON THE MAIN PCB. 6- SHUTDOWN AT POWER WITH SELF DIAGNOSIS ERROR 2 2. CHECK FOR LEAKY C9A60 470 PF 1000 V PART # 154P400030, PARALLEL TO D9A57 ON THE POWER PCB 2. SHUTDOWN AT POWER WITH SELF DIAGNOSIS ERROR 2 2. CHECK FOR OPEN FUSES F9A04 AND F9A05 ON THE +24 AND -24 VOLT LINES. IF THE FUSES ARE OPEN THE CONVERGENCE OUTPUT CIRCUIT WOULD BE SUSPECT. 7- SHORTED HORIZONTAL OUTPUT TRANSISTOR. 8- COOLENT HAS LEAKED ON THE MAIN BOARD FROM THE CRT'S AND HAS DAMAGED THE MAIN BOARD BEYOND REPAIR. also if the 24 volt B+ and or B- Is missing from the convergence ICs, change both convergence ICs as well as the defective pico fuse in the power supply. This is not a quicky type of repair most likely. These are a few of my notes on this Set from me and a few of my buds in the buisness. Good Luck and let us know how you made out with this set.

Sep 01, 2008 | Mitsubishi WS-65809 65" Rear Projection...

1 Answer

Panasonic pt-53wx53g tries to turn on but goes right off

That is indicating that the convergence circuits have shutdown the set. You will need new Convergence ICs. They should be STK392-110 or STK392-120 either number works the 120 being the better chip. I will post a link where you can get the new ICs and they provide step by step instructions with pics so you can do the repair yourself. You will find your IC numbers under the section titled Convergence ICs just click on that and you will find your STK numbers.

Mar 30, 2008 | Panasonic PT-53WX53 53" Rear Projection...

1 Answer

Toshiba projection tv

Unplug the TV from the outlet for about 30 seconds. This will reset the microprocessor. Re apply AC and power on the TV. If your lucky the set will come on and play. If not, the red light will start blinking again indicating shutdown. There are many reasons for the set to go into shutdown, but one of the most common cause is failure of the convergence output IC`s. If your TV is in shutdown, you will need to find a qualified technician for proper diagnosis and repair.

Nov 23, 2007 | Toshiba 57H81 57" Rear Projection...

2 Answers

Mitsubishi will not turn on

If the green light flashes, thats an indication that there is a problem in the sweep power supply or the horizontal drive circuit. Its not a problem a layman or unexperienced person should attempt to repair unless you know about electronic circuits and how they work.

Sep 22, 2006 | Mitsubishi WS-65511 65" Rear Projection...

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