Question about Panasonic PT-51HX42 51" Rear Projection Television

1 Answer

I have a Panasonic HDTV Projection Monitor model PT-51HX42. It will not turn on and the red light next to the power button blinks three times

Posted by Anonymous on



1 Answer

SD Tech

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.


    An expert that got 20 achievements.


    An expert that got 10 achievements.

  • Panasonic Master
  • 14,553 Answers

Three blinks is short protection in this model.

98% chance one of the protect resistors around the two STK-392-110 convergence chips is bad.

Good news here----total parts cost would be under 25 dollars on EBAY. I use a seller there.

I also have start to finish, step by step instructions for this repair in this set.

They tell you everything you will need and how to do the repair.

Let me know if you want help or the instructions--I can tell you how to look to see if the protect resistors are bad.

This is a very common problem and I have fixed hundreds of these sets with this problem.

If this information told you something you did not know, rate this solution as very helpful as I do this here for free.

If you need more help or want the instructions let me know, we will find a way to get them to you for free.


Posted on Sep 15, 2010

  • 11 more comments 
  • SD Tech
    SD Tech Sep 15, 2010


  • acree24 Oct 18, 2010

    SD Tech: I have a panasonic 47" rear projection and it just shut off. The red light is blinking 3 times when I turn it on. Your advice and directions are sounding very helpful. Can you email me the repair instructions at [email protected]? Thank you for the help!

  • Tiogy Oct 22, 2010

    SD Tech, I also have a Panasonic, PT-47WXC43G with the 3-blink error code. I have read that it may be better to upgrade to the STK392-150/180 as those chips will tolerate heat better - is that true and if so, do different resistors need to be used? Are there complete repair kits with the resistors available? I would like to have the instructions to make the repair also. Can you email them to me at [email protected]?

    Thank you!

  • sdavila42 Dec 03, 2010

    I am having the same problems as described. I am going to go onto Ebay and buy the part necessary but could you please email me the step-by-step directions to fix. Thanks!
    [email protected]

  • SD Tech
    SD Tech Dec 04, 2010


  • echovalleyja Feb 05, 2011

    My Panasonic 51hx42cf has the red light blinking 3 times also. Could you email directions to fix to [email protected] Greatly appreciated!

  • ness520 Feb 15, 2011

    SD Tech , i am also having the same problems ...any advice and instructions would be great to help me fix [email protected]!

  • kimberly1203 May 27, 2011

    Hello SD Tech...can you send the instructions to me as well? My email address is [email protected]

  • ekgerhart Jun 08, 2011

    SD Tech, thank you for the posting. Please send the instructions to me at [email protected] Thank you!

  • bowl4fun2002 Jun 09, 2011

    SD Tech, I think this is my problem. Please send the instructions to me at [email protected] Thank you!

  • PAT COLEMAN Jun 29, 2011

    can you email me that info please at [email protected] thanbks

  • faithfulccmt Jul 28, 2011

    Your advise was SO helpful... I have been dealing with this for a long time and just forgot about the TV for awhile, but then I read your post and was hopeful again. Could you please email me the instructions at [email protected] , I am going to try and find the parts on Ebay. THANKS SO MUCH, you were a huge help!!

  • horselawyer Sep 10, 2011

    Our Panasonic HDTV Projection Monitor is a PT-56WX53 that has three blinks. Can you send us the step by step instructions to replace the STK-392-110 convergence chips. Our email is [email protected] Thanks.



Add Your Answer


Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Panasonic 51'' HDTV Model PT51HX42F - Turns off, light blinks 3 times, pauses, blinks 3 times again, etc.

the 3 blinks is caused by convergence failure indicating the Convergence ICs and resistors need replacement. You can get the convergence repair kit for your model at the kit contains the ICs and resistors and also has the CD that shows how to do the repair.

Jul 28, 2012 | Panasonic PT-51HX42 51" Rear Projection...

1 Answer

I have a panasonic pt-47wx42 projection monitor. It will not turn on and the red light next to the power button blinks three times

The 3 blink error is caused by failed convergence ICs and the six 2.2 ohm resistors. Installing the convergence repair kit for your model should solve the issue. The kit is available from the kit contains the 2 ICs with heat sink paste, the 6 resistors and the cd with instructions

Jul 11, 2011 | Panasonic PT-51HX42 51" Rear Projection...

1 Answer

Panasonic pt-51hx42 model tv--When i push the power button the set turns on for a few seconds then turns off. it will not turn on again unless i unplug it and then plug it back in and then it again turns...


This set has a self check feature---the blinking power light should indicate what is wrong------a series of 3 blinks with a pause is short protection---common here.

A series of 5 Blinks means a short on the 140 volt line, more serious than 3 blinks but still fixable.

These sets all have a "SOS" SYSTEM---at least three protection circuits that will engage if something wrong and not allow the set to come on.

Let me know if a sequence of blinks---easy to miss if you do not know about it.

If this information helped you rate this solution as very helpful as I do this here for free.

If you have questions or need advice respond to this posting with a comment.


Aug 12, 2010 | Panasonic PT-51HX42 51" Rear Projection...

1 Answer

Panasonic 56" HDTV Projection TV. Model PT-51HX42 TV power button flashes 3 times and then turns off

You have a defective temperature sensor
3 blinks flashes oncenevery 5 seconds
IC2301(pin74 and 75) detects open or short of the Temperature
Sensor (R2911) on Front Thermistor C.B.A., then indicates the
error when Temperature Sensor is open or shorted.
(The error is not detected for 1 minute after Lamp ON.)

Please rate my help++++Thanks for using FIXYA

May 29, 2010 | Panasonic PT-51HX42 51" Rear Projection...

1 Answer

Wont work

3 blinks is convergence error.

Apr 13, 2010 | Panasonic PT-53WX53 53" Rear Projection...

1 Answer

2002 Panasonic PT-47WX52F - Power button now just blinks 3 times

thats the convergence circuits needing repair. You can repair it yourself for around 50.00 with the convergence repair kit for your model from the kits contain the parts and the CD with instructions.

Mar 28, 2010 | Panasonic PT-47WX53 47" Rear Projection...

1 Answer

My red power light comes on for a about a second blinks 3 times will not turn on

In almost all cases a three blink code on that model indicates a convergence output failure. Those big amplifier IC's need to be replaced.

Jul 08, 2009 | Panasonic PT-53TW53 53" Rear Projection...

1 Answer

TV not staying on

I called a tech and it was a convergence issue. It cost $375 to fix.

Jul 05, 2008 | Panasonic PT-51HX42 51" Rear Projection...

Not finding what you are looking for?
Panasonic PT-51HX42 51" Rear Projection Television Logo

Related Topics:

540 people viewed this question

Ask a Question

Usually answered in minutes!

Top Panasonic Televison & Video Experts


Level 3 Expert

5700 Answers


Level 3 Expert

513 Answers

The Knight
The Knight

Level 3 Expert

76466 Answers

Are you a Panasonic Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides