Question about Panasonic PT-47WX42 47" Rear Projection Television

1 Answer

Bad Component Good day all: I've had my 47" TV for about four years and just recently the tv would power up for a few seconds then shut off. The power indicator light on the front panel would then blink three times. After leaving the tv unplugged for two days I got up the nerve to pop the back off and take a peak inside. Nothing really stood out as the culprit so I plugged the set back in and had my wife hit the power button, what I noticed was a capacitor glowing like a christmas tree light then the set shut off. This capacitor is the first of many in a row next to the convergence amplifier, it's grey in color with one band and is in the shape of a resistor. Most notable was the incredible amount of dust that collected on the pc board, I vacuumed it all out and labeled the wire harnesses and removed the whole chasis from the set. My question to the tech guys//// has anyone heard of this before? Could it just be a simple cap that burned out and I could bring the chasis to a repair shop and get a new one? Or is there a deeper more sinister reason why just this cap would let go? Any help would be appreciated, hopefully this is low cost fix and maybe help others with a similar problem. Cheers: Lee

Posted by lee manseau on

  • lee manseau
    lee manseau Jul 05, 2007

    HI Mikenj1964:

    First off I'd like to say "Thank You very much"
    for taking the time to share and post your knowledge of this problem..

    I knew deep down there was an underlying cause and I'm glad you were able to confirm it. I have no experience in replacing this type of component, but after reading this article:
    I feel it's worthy of my best effort!!! Again thanks and I hope this helps others out..




1 Answer

Mike Longo

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 398 Answers

Hello Lee. I have seen that many, many times. There are 2 large black convergence IC's, STK392-110 and one of them has shorted out. The extra current it is drawing is cooking the resistor next to it and the computer senses the extra current and shuts the set down. The part you see glowing is a 2.2 ohm 1 watt (or 2 watt)resistor, the same as the 5 other resistors next to it colored red, red, gold. You need to replace the convergence IC that the burning resistor is connected to and replace that resistor, and your set will then work normally again. If you have no experience replacing convergence IC's then have a qualified tech handle it for you.

Posted on Jul 03, 2007


Add Your Answer


Uploading: 0%


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



Related Questions:

1 Answer

TV turns itself off??

Take a second look in the power supply where the power cord goes for bad caps----a few examples:
Good one on the left and puffed up one on the right

Extreme example of ones the arrows point to and notice all the perfectly flat tops on others

May 28, 2012 | Televison & Video

1 Answer

My TV has been having a shacky picture when it first turns on for a few minutes, then clears up. the other day after using the TV for most of the day, it shut off unexpectidly, and now it will turn on and...

1. YOUR flyback is going bad 2. Peform a removal and replacement 3. check your error codes first to ensue nothing else exists 4. Proceed to change out the required parts 5. Observe all electrical risks 6. Order replacements from 7. Ensure to always remove power 8. Ensure to always use electrostatic wrist strap

Jan 31, 2011 | Panasonic PT-47WX49 47" Rear Projection...

1 Answer

Turn TV on.. power light comes on.. sometimes see picture for a few seconds, picture blinks, becomes vertically smaller, then TV shuts off.... sometimes do not see picture at all, before TV shuts off....

the tv is rrar projection i am sorry but these are mento be serviced every 3 years or so but can go faster it is the convergance settings they are adjusted by knobs inside the tv you will need any good tv reapair service it will cost 120 pounds max and it will come with a garuntee but it is worth it as the tv will be like new again this is the problem with rear projection sorry to be the bearer of bad news but i fix these tvs every day...please be sure to make payment and let me know how you get on but please pay no more than 120 pounds

Jan 16, 2011 | RCA HD52W59 HDTV Projection Television

1 Answer

SD Tech I replaced both convergence chips with two news one. Now with TV on table when I turn it on the projection lights do not come on and the TV shuts down in a few seconds. jaybirdwv

there is still a component problem in the t.v. send it back to the tech. if the convergence chips have failed again, the power supply circuit should be checked.

Nov 11, 2009 | Panasonic PT-47WX53 47" Rear Projection...

2 Answers

I have a Sony 47 inch rear projection tv that is about nine years old When the set is turned on it has a good color picture but after a few minutes it tuns to a complete green sceen. Can you tell me what...

The green CRT may be intermittently bad or the focus screen block. Certain sony's are common to have bad CRT's. When the screen goes green does the set shut off?

Sep 20, 2009 | Televison & Video

2 Answers

Vizio SV470XVT1A makes screeching sound


This sounds as if it could be a ballast problem, or a switching power supply transformer problem. Both of these can produce this sound. I would suggest that you have a qualified TV technician repair this set due to the dangerous voltages and currents that could be present. In my experience with these TV I would have the technician pay special attention to the power supply board and the backlight/inverter section which includes the ballast used to fire the backlight.

I hope this helps,

Thank you,


Jun 17, 2009 | Vizio SV470XVT 47 in. LCD TV

1 Answer

Vizio 47" lcd no picture no sound has power

this could be one of two problem. first, check if you have back light. If you do then the problem is with the M/B. Second, if you don't have back light then the inverter is bad and needs to be replace.

May 18, 2009 | Vizio VO47L 47 in. LCD TV

1 Answer

Vizio 42" plasma tv model#p42hdtv10a

yes,veryry possible you have a bad transister on the power supply board .best way to fix it is to change the hole board.

Oct 14, 2008 | Vizio P2 42 in. HD-Ready Plasma Television

2 Answers

JVC Projection TV shuts down by itself.


Dec 15, 2007 | Toshiba 50H81 50" Rear Projection...

Not finding what you are looking for?
Panasonic PT-47WX42 47" Rear Projection Television Logo


Ask a Question

Usually answered in minutes!

Top Panasonic Televison & Video Experts


Level 3 Expert

513 Answers

The Knight
The Knight

Level 3 Expert

76582 Answers

Muntejaya Ginting
Muntejaya Ginting

Level 3 Expert

10422 Answers

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

Answer questions

Manuals & User Guides