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Tv makea a high pitched hiss, have to unplug it, it started this while it was turned off. It does not turn on, and I have to leave it unplugged because of the hissing sound. There was a button that was on high in the back of the tv. Could this have something to do with/or caused this problem?

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Your tv maybe got the flyback transformer damaged,

Posted on May 09, 2008

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Toshiba HD ready TV ct 90158 makes high pitched sound


A high pitch sound can be a capacitor losing power it would sound a bit like a fire work. most have back up on the board but it put more pressure on them the more times you use the tv. would check them and replace. all of them can be 5 in a row in some models.

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Sony Trinitron kv-2966 tv will not start ,no standby light,makes start up noise high pitch.


Turn off tv and check all connections and unplug it from power supply. make sure that everything is connected tightly on the back of tv( cables and stuff) turn it back on, if you see a red flashing light or red solid light, chances are there might be a problem on the capacitor or wirings inside it.

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1 Answer

I have a Samsung HLT5076SX/XAA with power up to picture problems.


Im going to guess that you have crackling and hissing noises, as well as the infamous "click" then nothing when you try to start the tv. This is caused by circuit failure on the main board, which powers up the main inverter to charge the screen. ( a high voltage thing that makes the picture come on) when the board cannot provide a high enough starting voltage, the symptoms you described start happening. It is not an easy fix, and will probably set you back a couple hundred dollars or so to fix. I hope the best for you

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1 Answer

After a power problem, tv just emits a high


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regards
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1 Answer

When turning TV on it would click a few time, then you would hear a hissing sound, but no picture. Would have to unplug TV, as it would not power down. Unplugging and plugging in would eventually get...


The hissing sound could be high voltage leaking from a tripler. Observe in a dark room for blue arcing. Look at tripler and connections to the projection tubes. If the tripler is leaking replace the tripler.

Oct 13, 2009 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

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Jun 07, 2009 | Projection Televisions

2 Answers

TV Just Started Making a Humming/Buzzing sound


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If the noise comes from the flyback side, if you can solder, again with the set unplugged, try resoldering the pins on the transformers. That may resolve the problem.

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1 Answer

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Check Sears or partstore.com for a color wheel.  I like sears for experimental replacements since they allow easy returns.
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1 Answer

52 in RCA


The T.V. has no lamp, it has 3 guns red,blue,& green. Unplug the lead that goes to the high voltage splitter(make sure t.v. is unplug). Then turn the t.v. back on if you hear the H.V. lead making a hissing sound continuously most likely the h.v. block needs to be replaced. Follow the lead from the flyback to the h.v. splitter, this will be the lead that unplugs at the splitter.

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