Question about Panasonic CT-36D32 36" TV

1 Answer

No video working fine. Next day no video. Tried unplugging and waited 30 minutes and retried. Nothing. Have 110ac at unit and 2 glass fuses are OK.

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  • 21 more comments 
  • walt kerasiotes Jul 23, 2007

    no light. Only sound is faint audio in background sounds like shortwave broadcast
    but not discernable. Tried leaving power off for
    10 minutes. Tried reset using 2 buttons. It
    recycled but no picture and no light in tube.

  • walt kerasiotes Jul 23, 2007

    no light on screen see info above. Thanks

  • walt kerasiotes Jul 24, 2007

    I can solder and I do have a meter to test
    voltages and continuity.

  • walt kerasiotes Jul 24, 2007

    I can solder and I have test meter for voltages and continuity.

  • walt kerasiotes Jul 24, 2007

    have manual. Probably can follow most of schematic but not sure can locate items on the board itself, but willing to try

  • walt kerasiotes Jul 24, 2007

    pretty large but I will send

  • walt kerasiotes Jul 24, 2007

    several files in the manual. Had to split up since your mail refused large attachment. Let me know if you are missing anything.

  • walt kerasiotes Jul 24, 2007

    i will attempt this tonight.

  • walt kerasiotes Jul 24, 2007

    OK !

  • walt kerasiotes Jul 25, 2007

    There is NO C619 I really looked and cannot find it.. Are you on the Same Chassis?

  • walt kerasiotes Jul 25, 2007

    Do you see it in the manual? What page? I'm sorry but I just am not able to locate it yet.
    Still looking.

  • walt kerasiotes Jul 25, 2007

    The only transformers I found: on the P board T801, and D board T1551, and T board T2801. None on C board. None on G board. None on Y board. None on H board. None on J board. None on Q board. None on N board. None on F board.
    None on R board. None on S board. None on R board. None on X board. None on C board.

  • walt kerasiotes Jul 25, 2007

    Check Page 1 and page 45. It shows that it covers 2 different chassis. I sent you the right manual. The chassis we have is probably the ANEDP294. I think you are looking at the
    AEDP294. the set is the 54" model! I also located the other 2 transformers t501+ t551 on the A board diagram.

  • walt kerasiotes Jul 25, 2007

    I don't know who or why this is constantly being linked to different model
    MY MODEL IS CT-36XF54V CHASSIS ANEDP294

  • walt kerasiotes Jul 25, 2007

    here is cover

  • walt kerasiotes Jul 25, 2007

    Which number is Main Regulator IC? Again, I have the manual but the IC001 doesnt look like it has pins for test lead like IC846 had.
    I saw on pg 28 there was a source voltage chart
    so i checked IC846 pin 3 and IC803 pin 3
    which were both at correct voltages. But when
    I checked D813 it was supposed to be +35.8 and
    it only had about 4 volts.
    I will stay on line while you let me know.

  • walt kerasiotes Jul 25, 2007

    cannot find c812
    I found C818 AND C821
    if i used metal point on top of the can with +
    on it meter showed -.21 for c818 and -.15 for C821.
    Plug 1 pin 7 -.01 pin 8 nothing
    plug 2
    pin 5 11.6
    pin 8 0.41

  • walt kerasiotes Jul 25, 2007

    Do I have to take more readings, or are you saying that IC801 is defective? I think I found ic801 it looks like it has a large heat
    sink attached to it and it is rather warm. I
    don't see anything on the P board that looks
    burnt but there is a spot on the A board that
    looks a little darker brown. Do I go get an
    IC801 and replace that or do we take more readings? Thanks

  • walt kerasiotes Jul 25, 2007

    C818 = 0.15
    ic801
    1 8.73
    2 -8.73
    3 8.94
    4 -8.64
    5 -8.94
    6 8.94
    7 -8.84
    8 -8.70
    9 -8.79

  • walt kerasiotes Jul 26, 2007

    measures 164

  • walt kerasiotes Jul 26, 2007

    do you want me to change IC 801 ?
    Do we need any more readings or is that the
    final fix? Sorry I'm so dense but I'm a newbee
    you know.. Please let me know asap so I can
    track down the part. Thanks again.

  • walt kerasiotes Jul 27, 2007

    still don't know what Opps refers to
    please respond

  • walt kerasiotes Aug 08, 2007

    oK IT'S BEEN OVER A WEEK...
    STILL NO SOLUTION.

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1 Answer

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  • Master
  • 3,130 Answers

When you say no video, is there any light on the screen at all? And is there any sound?

Posted on Jul 23, 2007

  • 17 more comments 
  • Larry  Dillon
    Larry Dillon Jul 23, 2007

    Sounds like a power supply problem. Do you have any solid state repair experience?

  • Larry  Dillon
    Larry Dillon Jul 24, 2007

    Do you have a service manual? And can you read and follow the circuit flow using a scematic diagram?

  • Larry  Dillon
    Larry Dillon Jul 24, 2007

    Send me a copy of it to techman32k@yahoo.com and I will see what I can do for you.

  • Larry  Dillon
    Larry Dillon Jul 24, 2007

    Ok got the manual. Will look it over and give you a few things to check in a while, after I look it over.

  • Larry  Dillon
    Larry Dillon Jul 24, 2007

    OK first things to check and get back to me with your findings please. All of these checks are on the A board. Check the voltage on C619, the plus side. Check the voltage on C620, the plus side also. Find the plug number CN604 and measure the voltage on pin number 1. Find the audio output IC and IC202 and check pin number 8. If no 12 volts there, change the IC and replace the circuit protector, PS201. COMMON fault with this TV set. Next find the 9 volt regulator IC604. It will have three legs on it. The right leg, as you are looking at it from the front, should measure 9 volts. Next if there is no voltage there see if the IC is cold or is it hot, Disconnect the left leg as you are looking at it from the front. and measure the voltage on the board where the left leg was connected, not the leg on the IC. It should be 12 volts. if it is, replace the IC. It is a simple 12 to 9 volt regulator in a to-220 package. Good Luck

  • Larry  Dillon
    Larry Dillon Jul 24, 2007

    Just be careful!

  • Larry  Dillon
    Larry Dillon Jul 25, 2007

    Yes I am. It is the main capacitor off the secondary of the switching power supply. It is the 130 volt source. i am using the scematic you sent me.

  • Larry  Dillon
    Larry Dillon Jul 25, 2007

    Look on the A board parts list. it may not be mounted on the board?

  • Larry  Dillon
    Larry Dillon Jul 25, 2007

    Wait a sec, The manual i received was the Panasonic, CT36SF24U. Is this from you? It is fron you it said in the e-mail? I did not even look at the manual before now, or the number.

  • Larry  Dillon
    Larry Dillon Jul 25, 2007

    I am sorry, I am working with two other sets at the time, helping others. I gave you info for another set. I am looking at your set and will be posting new instructions soon.

  • Larry  Dillon
    Larry Dillon Jul 25, 2007

    Ok now that I am now on the same page.
    Start out by measuring and telling me the voltage on the main regulator IC, on pins 1&2. Tell me what you have on the plus side of C 818, C 812, and C 821. Next find plug # P1 and tell me what you have on pins 7 & 8. Next find plug # P2 and tell me what you have on pins 5 & 8.

  • Larry  Dillon
    Larry Dillon Jul 25, 2007

    No you have to put one lead onto the metal chassis, and the red lead directly to the Plus lead on the capacitor on the printed circuit board. The top of the capacitor is the negitive lead. And it is IC 801 for the voltage regulator. Replace the regulator IC and make sure there are no burnt resistors around the regulator.

  • Larry  Dillon
    Larry Dillon Jul 25, 2007

    What are the voltages on all of the pins on the voltage regulator, and what does the plus side of C 818 measure on the printed circuit board?

  • Larry  Dillon
    Larry Dillon Jul 26, 2007

    Check voltage on C 806 on power board, with negitve lead of meter on negitive lead on capacitor on the PCB and the positive lead of the meter on the + lead of the capacitor. Be careful, as this is high DC voltage.

  • Larry  Dillon
    Larry Dillon Jul 26, 2007

    Ok change the regulator IC.

  • Larry  Dillon
    Larry Dillon Jul 26, 2007

    It is possibly the final fix, you cannot tell till you replace it. If you do know how to test the remaining transistors in that circuit, please do so. Also test the horizontal output transistor for a short. Last thing, with the set unplugged, test the resistance from C818.. At this point, replacing the entire P board is certainly an option. The part number is TNP111505RZ and is available from the partsore.com for about 98 bucks and the link for that board is available here: http://www.partstore.com/PartSearch.aspx...

  • Larry  Dillon
    Larry Dillon Jul 26, 2007

    Opps from across C 818, and see if it measures a short.

  • Larry  Dillon
    Larry Dillon Jul 27, 2007

    I made a mistake when I stated what to measure C818, see if it measures a short acrossed both legs ON the printed circuit board side while the set is unplugged.

  • Larry  Dillon
    Larry Dillon Jul 27, 2007

    my best advice though, if there is no short across, C 818 replace the board.

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