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Zenith tv hissing sound coming from the back of tv

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Normally that is dust build up around the high voltage wires and component on the board.
sometimes its around the tube neck area
you will have to open the set and blow it out with an air compressor.
remember it will store a charge for days.

Posted on Feb 17, 2008

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Posted on Jan 02, 2017

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Burnt smell


Check the main power supply regulator section for faulty component/s. The sound you heard might be of a bursted electrolytic capacitor at the power regulation stage circuit, due to some spikes in the input AC voltage. Open the TV and check this section. Be sure to unplug the TV from AC mains wall socket, before open it.

Jul 23, 2012 | Zenith B36A24Z 36" TV

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Philips widescreen flat TV model #50PF9966-37 50" plasma, as the tv warms up a loud hissing sounds comes from the back. The hissing sound does not go away when you mute the broadcast sound. when you change...


From what I'm seeing online, the bulbs in the Ambilight may be the culprit. I also read that a firmware upgrade could fix the issue too. There was also a recall of some TV's with that issue, so I would check with Philips about your model and serial number and see if your TV was included in the recall. If you raise enough cain and threaten to never buy from them again, they may get your set fixed for you... even if the warranty is up!

Good luck and please post feedback!

Oct 10, 2010 | Philips Televison & Video

1 Answer

There is a hissing noise in back of tv and picture goes on and off zenith d36d51


Hissing noise and picture on and off means faulty flyback transformer, it has a small crack and voltage is leaking out, replace the flyback, if tv still not working replace horizontal output transistor (broken flyback could blow the transistor).

Aug 09, 2009 | Zenith D36D51 36" TV

1 Answer

Hissing popping sound


It sounds like the flyback or the HV splitter those are the two items that will hiss. It should be coming from the area where the flyback is. thats a large transformer with a large red wire coming out of it going into a Splitter that will have 3 additional large red wires each going to the three CRts. Let me know if you need the part numbers and where to get the parts with free tech support so you can easially install them yourself.

Jul 25, 2008 | Zenith R57W46 57" Rear Projection...

1 Answer

FOUND HISSING


Can you send them to my email slinteriors@yahoo.com and I will assist you

Jun 25, 2008 | Zenith R57W46 57" Rear Projection...

1 Answer

Wont turn on smell burning


Can you remove the rear panel and check if the hissing is coming from the flyback? Which is a large transformer with a large red wire coming from the top of it? If so can post a link where you can get a replacement their not exspensive and their easy to replace. If its not coming from the flyback post a picture of where the hissing is coming from and I will identify the parts for you, But I feel its the flyback due to the hissing. respond to this same post so I have your correct model number when you reply.

Jun 25, 2008 | Zenith R57W46 57" Rear Projection...

1 Answer

Bought 2 DTT-9900 converter boxes and hooked them to 2 TV's, get signals after playing around with antenna. but after using both TV's to play a dvd (dvd player hook to TV) The sound went down to almost...


Try turning off the converter box when using the DVD player. The zenith have a second sound control on the converter box remote thus you may have to adjust the sound on the tv remote because you are using the dvr. I set the zenith sound level at the highest level and use on the tv remote only to adjust sound. This eliminated a hiss that the sound control on the converter box was causing.

Apr 28, 2008 | Zenith ZN110 Remote Control

1 Answer

Sony kp-41s3u 50" hissing sound


sounds like high voltage arcing,caution

Oct 28, 2007 | Sony KP-41T65 41" Rear Projection...

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TV screen wont turn on but just a loud noise coming from the tv


I think maybe the G-board needs to be replaced. A TV shop will have to repair it. They normally start around $200.00

Jul 02, 2007 | Panasonic CT-32G23 32" TV

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.

Jun 22, 2007 | Durabrand DU1901 TV

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