Question about Panasonic PT-40LC12 40" Rear Projection HDTV

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When hcr4755 light flashes 5 times

When Unit is plugged in the light just right of the power button flashes 5 times. Unit will not turn on at all. The (what appears to be the power supply) (Says in-line Filter on it) The area around the board that has the Thermasistor looks like it got very hot. I checked the thermasistor for continuity and I get 0 ohms. Cannot see any other issues with TV. Please Help.......

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 59 Answers

SOURCE: panasonic projection TV power blinks in orange 5 times every 5 seconds

did you ck the lamp,  can you ck voltage to ballast should be around 300 volts

Posted on Oct 23, 2007

  • 2 Answers

SOURCE: NO PICTURE, NO SOUND, TV TURNS ON THEN TURNS OFF

STOP THE PRESS!! I FIXED MY TV for a whopping $26.

I took a wild shot and purchased two STK392-110 convergence amplifiers from http://www.electronix.com/. They ship fast, placed my order on Tuesday evening after coming here and placing my comment. To my suprise the parts were in my mailbox on Friday. The parts were actually $12 but I also picked up a iron and a solder sucker.

So rarewish4us, If you're in the South Florida area I'd be more than happy to take that "JUNK" off your hands. LOL
If I were you, I'd give it a shot before you junk it.


Good luck,
Howie

Posted on Feb 09, 2008

  • 1 Answer

SOURCE: Panasonic MODLE PT53TW53G led code flashes 3 times convergence problem

I replaced the ic's and still have the same problem.

Posted on Sep 11, 2008

  • 1 Answer

SOURCE: Panasonic PT-50DL54J DLP TV Flashing Light

I had the same problems that most of you have been having, tv turning on and off, lights flashing in all different colors, having to unplug tv to reset and all of that good stuff. I noticed that most of the time this would happen once the tv would start to heat up, and I could hear the fan working a little harder. Well I am not an electrician but It was very simple to unscrew the lower bottom park of the tv, where the fan and most of the electronics sit, then I used an oxygen tank ( I work for a medical company ) to blow out all the dust in the tv, ( you can olso use the compressed air use for computer, but if grandma or grampa have some O2 laying around, it works really good, LOL. )and was very surpriced to see how dusty it was, then I removed the MAIN FAN ( you only need to remove three screws, however there's a box in fron of it, which you'll have to remove first in order to get to the fan ). this may sound a little complicated, but trust me it is not, once you have taken the fan off, clean it all the way around ( best to use a clean rag, the compressed air was not doing the job.
long story short, once I cleaned the fan and put it all back together. The TV still didn't work LOL, Just kidding, It has been working perfect for a little over a week.
If I can help in any other way, please e-mail me @ gsierra11@yahoo.com

hope this helps.

Posted on Feb 19, 2009

asnowman
  • 788 Answers

SOURCE: my Panasonic PT-53TW53 53in TV won't turn on..

Your symptoms sounds like a damaged convergence IC.

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. This is indicated by the flashing red light on the front of the set.
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.
If I have helped you, please help me, and rate this suggestion the highest FixYa rating. (Two Thumbs Up)
Please Note: If you cannot rate this post with the highest rating, then please do not leave any rating. I am doing this for free and I do not think that any rating other that the best is needed.
If you need further assistance please comment to this post and I will try to help you further.

Posted on Aug 15, 2009

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1.Unplug the power cable and turn off the the unit.
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3.While holding the button,connect the power cable and do not the release button for 5 sec.
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To do Semi full Reset.

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Hi,

Please follow the steps given below and check the functionality.

Bypass the surge protector ====================
If the all-in-one is plugged into a power strip, remove it from the power strip and plug it directly into a wall outlet and see if the message still appears.

Power Cycling
===========
1. Verify that the unit is switched on. Unplug the all-in-one from power and disconnect the connection port.
2. Wait 30 seconds.
3. Plug in the power only.
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6. Restart your computer and check the functionality.

==== Partial Reset ====
Press and hold # and 3 button on the unit while plugging in the power cord.
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Switch printer on,just get grinding noise on right hand


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Please come back and just gave a vote, it will gave me some satisfaction to know am helping some one so I will keep on helping.
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Lcd monitor power light flashing with no img. seems 2 be frozen


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If the serial number begins with an A and/or your power button on the far right (5th button from left):
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5. If the procedure worked, the green light will go to amber and you should see a "No Signal" message on the screen for a few seconds.
Method #2
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3. Counting the buttons on the front of the panel from left to right as 1 – 5, hold the buttons 2 and 4 down at the same time (see attached picture) and while continuing to hold the buttons, plug the power cable back in.4. Keep holding the buttons for 5 seconds after the power has been plugged in and then let go. The green light should be steady when you release the buttons.
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Method #2
1. Unplug the VGA cable.
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Sharp LC-32D43U


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Mitsubishi VS-50705, 50 inch Rear projection TV won't turn on!


most of the time the convergance ic go bad:
but try this:
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This unit has an error code diagnostics.

On the front panel of the unit press and hold the INPUT and MENU
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You now have the two digit error code. The first time the led flashed
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12 ----------- indicates no error
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Q5A00
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