Question about Panasonic Televison & Video

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Panasonic 32 led tv start tv on picture OK but few seconds pictures goes or no raster but sound OK and output socket pin video odio extra tv odio video ok

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  • Panasonic Master
  • 2,517 Answers

Raster is typically a Cathode Ray Tube (CRT) reference... your question got side-lined because of it...

If the answer you got works that's great... but for future questions it would work better for you if put in the model number and stuck to describing the actual symptoms...

And don't forget to wear an anti-static wrist strap EVERY TIME you TOUCH a circuit board YOU
CARE ABOUT.

Carnac the Magnificent

Electrostatic discharge

Antistatic ESD Wrist Strap

Posted on Dec 24, 2016

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  • Panasonic Master
  • 74,106 Answers

T'Con board fault. Check and replace it. If you wish to get some details; visit the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/

Posted on Dec 24, 2016

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

  • 275 Answers

SOURCE: sony kv-32s26 32 inch tv

Could also be faulty Power supply. If Proper 110 V is not generetaed by SMPS, the above symptoms appear.

Posted on Sep 18, 2006

techman
  • 3130 Answers

SOURCE: Tv showing blue screen with flyback lines sound ok

Flyback lines? Is the picture all white with no brightness control with faint horizontal faint lines? If this is what you are saying, the screen voltage could be bad, and if thats the case, the picture tube or the flyback itself could be bad. You could also have a bad connection on the crt socket

Posted on Dec 27, 2006

  • 556 Answers

SOURCE: sound problem

 

  1. no picture &no sound raster ok.

 

  1. your problem is in tuner to vif section.
  2. check supply to TUNER & VIF section .
  3. check loose contact in above section.
  4. check components in VIF section.
  5. for ckt open the web site & download it fron there as given here.
  6. hope this will help.
  7. good luck.

http://www.eserviceinfo.com/index.php?what=search2

Posted on Oct 12, 2007

  • 556 Answers

SOURCE: Panasonic TV - no picture, but sound is ok

 

 

it is due to vertical section failure.

  • before you start any work reduce brightness to avoid crt burn.
  • please check some loose contact or loose connector.
  • check supply to vertical section
  • check parts in vertical output section
  • check vertical ic.
  • hope this will help.
  • good luck.

Posted on Oct 17, 2007

jingjao
  • 252 Answers

SOURCE: SANYO TV MODEL CM20SP8S CHASSIS AC3-A20

try to fine tune your tv using the remote control, or, if you had knowleged in electronics adjust the sound IF transformer using a wood stick or plastic don't use a metal in adjusting the IF

Posted on Oct 10, 2008

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Panasonic led tv model no c320x14-E3-B tv tv start few second picture goes and sound OK but no raster


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electro-medical.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Dec 26, 2016 | Panasonic Televison & Video

1 Answer

My LG tv will go on then after a few seconds the screen goes from black back to picture of and on a few times then shuts off. Help!


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1 Answer

My Panasonic LED TV picture goes away after a few minutes


Could be a bad connection that disconnects when heat in the system causes it to expand. Take to a pro or call manufacturer, they might have a recall or free repair available.

Apr 03, 2015 | Panasonic TC55LE54 55" 1080p 120Hz SMART...

1 Answer

Sound on but no pitcher


Sound on means audio section is ok. No picture is video board problem. Pl check input cables. Or give Hdmi cable input. Disconnect all inputs switch on u should get plain raster that is only dots on screen, or blue back screen, if nothing contact authorised dealer,

Feb 08, 2015 | Panasonic TH-L32C20X 32 inch Multi-System...

1 Answer

You have to tap firm sides of the Toshiba TV in order to see a picture


Hi Jaime.
Well it seems you have a dry joint or loose connection somewhere
in or to this receiver. Faults of this nature may at first seem straight forward but they can be very frustrating and often send you on a wildgoose chase.
The most valuable tool you posses will be patience and if you are still reading this then this virture in you is onfirmed. So let us continue.
We first need to narrow down the suspect area where the problem may be hiding. You say the picture is intermittent so I'm assuming
you still have sound. If you still have a raster (brightness on the screen) then the line oscillator, line drive, line output and EHT circuits are all functioning and your attention should be drawn to the composit video circuits in particular dry jionts on the rca video input socket your a/v cable is connected to (it's the yellow one)..
If you have only a blank screen did the disappearing picture
go to a horizontal line across centre of the screen just before going blank. If yes then the problem probably lies in the
frame output stage. Resolder all pin connections to the frame output ic (even if they look ok) and all pin connections on the flyback transformer (Line output transformer to some of us).
If the picture fades away rather than flashing off then look to see if the tube heaters are still glowing, If not resolder the heater pin connections on the tube base socket and all pins on the flyback
transformer. Stll haven't cured the problem ? Have a nice cup of tea before poceeding, you've earnt it by now.
OK once more into the breach dear friend, it's time to get violent
with this stubon beasty and start tapping the circuit board to find the most sensetive area and resolder all the joints you can find within a two inch radius of this point. The most common points for dry joints to occure are in the power supply, line output stage and
frame output stage (vertical stage to even more of us)
Good luck Jamie. Best regards from Vintie

Jan 04, 2014 | Toshiba CF36H50 36" TV

1 Answer

Toshiba CZ32V61 no picture


1) you have problem with the Raster
2) the main causes are a) raster b) picture c) sound d) synch
3) since this are not video, the problem is raster. your must
test the voltage from section horizontal out +125vdc+vertical output +80v+all other circuit +12vdc
4) test the power supply for defective. see the diagram attached

7_13_2012_10_30_34_am.png

Jul 12, 2012 | Toshiba CZ32V61 32" TV

1 Answer

JVC AV32260G COLOR TV


try resoldering vertical ic pins

Apr 19, 2008 | JVC AV-32260 32" TV

1 Answer

Green Picture


The problem sounds like one I had. If so, the cause is as follows.

The Daewoo ouputs synchronisation information on the green channel of the RGB outputs (which are pins in the SCART socket) The Panasonic TV automatically preferentially selects the RGB input in the SCART rather than the composite video signal in the SCART. The video circuits in the Panasonic should ignore the sync on the green channel but instead interpret the sync as green signal information which means the adjustment of the green channel is upset leading to a very green picture.

Possible solutions:
1. From the TV, manually select composite video input, not RGB. This may not be possible - I think the TV automatically goes for the RGB if it is present.
2. Disconnect the wire to pin 16 in the SCART socket. This is the signal from the VCR/DVD to indicate that RGB is available. Disconnecting it means the TV defaults to the composite video. This is what I did.
3. Connect the TV to the VCR/DVD using component or S-VHS leads only.

Jan 13, 2008 | Daewoo DV-6T955B DVD Player/VCR

1 Answer

Power light blinks and no picture


No picture - screen is empty. Sound is ok
Check IC101 (BA7630F), if video signal comes to input (pin 1) but not present at output (pin 14) then replace this IC
No picture and sound, only a high pitch sound at switch on
Remove horizontal transistor and measure the resistance across any two pins. This value should be no less than 200ohms
Picture fades away few seconds after start-up till no picture. Sometimes no picture at all. Sometimes picture OK for longer. Sound unaffected.
Faulty joints on CRT pcb. Cracked solder joints at tube socket connections on CRT circuit board. Caused variable supply to CRT heaters. Resolder all socket pins to pcb.

Nov 24, 2007 | Toshiba CZ36V51 36" TV

2 Answers

My Sony TV KV32s45 32" Shows no picture but has sound. After a few houres of unpuging the TV the screen is good but then the picture gose up and all i see i a black screen but the sound is good. THE stanby...


Picture int disappears leaving snow on screen
Resolder the Xtal in the tuner
No picture - screen is empty. Sound is ok
Check IC101 (BA7630F), if video signal comes to input (pin 1) but not present at output (pin 14) then replace this IC
Intermittent video or snow
Resolder points A, B, C, D in tuner PCB, check cold solder on tuner shield 2-106-349-21

Nov 23, 2007 | Sony KV-32S45 32" TV

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