Question about Panasonic CT-20D11 20" TV

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Panasonic tv old model

No picture , hissing sound from speaker

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Panasonic 12 year old TV is making a clicking sound, when I turn it on, manually. The remote control cannot turn on or off TV, nor can I get any channels at all. What could be the problem?

Posted on May 04, 2011

Curve picture and auto shutdown

Posted on Sep 23, 2008

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SOURCE: Hissing sound from a Panasonic old TV...Sound and picture are OK.

If you disconnect or power off the converter box does the hiss go away?
If you connect a VCR or DVD player does it still have the hiss? We
need to isolate what source is causing the hiss if it is from the set or
if it is from the converter box.
When you turn the volume control down on the set, does the hiss
reduce in level? If mute stops it, it should reduce in level as you
turn the volume down. Then turn up the sound level control on
the converter box whether its a manual control or by remote. If you
can get a combination that minimizes the hiss and gets higher sound
level from the programming that may cure it.
I am not familiar with the converter box you are using. Are you using
Audio/Video cables from it to the set or is it coming out with coaxial cable
and used on a channel? If you are using a very old set with a tuner input
perhaps the fine tuning is out of adjustment.

Posted on Feb 21, 2009

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2 Answers

No sound from tV speakers


check your speaker, use a battery 1.5vdc tap it to speaker wire if the speaker is ok you can hear a click sound as the wire touches the battery + & - .

Sep 10, 2009 | Sony FD Trinitron WEGA XBRKV-40XBR800 40"...

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Hissing sound from a Panasonic old TV...Sound and picture are OK. The hissing sound even continues when the MUTE on the Box is ON. The hissing only stops when the MUTE on the TV is ON. I am using the...


If you disconnect or power off the converter box does the hiss go away?
If you connect a VCR or DVD player does it still have the hiss? We
need to isolate what source is causing the hiss if it is from the set or
if it is from the converter box.
When you turn the volume control down on the set, does the hiss
reduce in level? If mute stops it, it should reduce in level as you
turn the volume down. Then turn up the sound level control on
the converter box whether its a manual control or by remote. If you
can get a combination that minimizes the hiss and gets higher sound
level from the programming that may cure it.
I am not familiar with the converter box you are using. Are you using
Audio/Video cables from it to the set or is it coming out with coaxial cable
and used on a channel? If you are using a very old set with a tuner input
perhaps the fine tuning is out of adjustment.

Feb 21, 2009 | Panasonic CT-20D11 20" TV

1 Answer

No Sound Issues


Hello!
Try the audio out. Run the audio to a receiver to see if the audio is there. If it is, then I'd leave it hooked up to the receiver and save yourself some money. If there is not any low level audio out then I'd fix the set. The only Sony set I've ever seen that was not worth fixing was a 32" model from the early 1990's that had bad picture tubes after only 5 years. I am a Sony factory trained tech. Good Luck!

barneyluc

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Sounds like you have a bad speaker,or at the most the audio amp needs changing. Get old speaker out of another tv or stereo.

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1 Answer

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It worked fine yesterday. Sound on all channels. Sometimes the picture goes black on channel 6. We can get it back by going up one channel, then back to 6. it is due to cable signal ie weak. now there is no sound this is due to sound section 1 loose connect in sound section 2 speaker 3 problem in sound section some part must have failed.

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3 Answers

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1 Answer

Hissing Sound


A hissing sound that comes from the back of the set (not from the speaker) usually indicates a high voltage leak, most likely around the "suction cup" at the top of the picture tube or around the flyback transformer. Remove the back of the set and turn it on, and when you hear the hissing sound, shut off all the lights in the room and you should be able to see a purple-ish or white-ish glow from the spot that is hissing. Shut the set off, discharge the high voltage and clean and seal the problem area. Of course this should be done by someone experienced with stopping high voltage leaks.

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Is the hissing or static sound comming from the speakers or from the back of the set itself?? Need more info please.

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