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Tv made a pop noise followed by a long hiss and the picture wnt off, sound is okay though.

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Related to a capacitor blowing up on your powersupply that supplies the voltage for the backlight inverter. The backlight inverter lights the tv. The power supply will need to be repaired so it can supply the 24v needed for the backlight inverter to work properly.


Thank you and best of luck!~

Posted on May 26, 2011

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Have a phiips tv had it in storage for over a year turned it on an the screen working perfectly but there a hising noise coming from the back of it do no what it is... Its a big bk tv not flat screen box...


hissing noise will be from high voltage regulator, i would suggest to do following:

1. switch tv off
2. remove plug from the wall
3. using air blower (compressor attachment - not leaf one!) blow the dust, especially from high voltage box section
4. connect the tv and switch on

if tv still issue hissing noise - follow 1 and 2 then:
3. remove back cover
4. use air blower again...
5. re-install back cover
6. reconnect tv and switch on

if hissing noise persist - check for blown capacitors on high voltage, replace if necessary, they have nasty tendency to pop if they are too long in storage, especially if tehy were overheated or frozen.

hope this will help you solve the problem, do not forget to vote...

Jan 27, 2015 | Televison & Video

1 Answer

Tv has picture, no sound, just popping/clicking


Probably the internal power supply has failed. It can happen even though your TV was stored and covered.

Dec 06, 2013 | Haier HL32R 32 in. LCD TV

1 Answer

Tv picture went out


Sorry bad news these TV's work off of lights that shine thru the back of the screen if you heard a pop it was the power board that turns on those lights not an easy fix sorry.

Jan 28, 2013 | Samsung LN40D550K1FXZA - LN40D550 40 1080p...

1 Answer

Have a video cassette recorder & dvd/cd player. Need instrucdtions on hooking it up correctly


power off all items... do you have cable/satellite (this cable wire needs to be connected from box to the in on VCR) from the out on VCR connect back to TV...okay DVD you should have 3 cable wires (red/white and yellow) this is to be plugged into AV1 (on the back or side of TV) follow the colors... red to red and so on...note you should tune your Flat panel CH 3 along with the VCR (set it CH 3)... okay turn on all, get a tape, pop it in VCR press play... do we have a picture and sound? okay press stop.. get a DVD disk place it into DVD player press play.. using your TV remote we need to change the source from component/cable to AV1 in order to view a DVD. and change it back once finish so you can view regular TV. okay do we have picture and sound?


have fun enjoy your movie

Aug 09, 2011 | Televison & Video

1 Answer

Hissing noise,sound goes off and and i have to turn t.v off and turn it back on


This is a protection circuit that prevents the tv from coming on (to stop damage of the components) ....you need to check your voltages off the power supply and make sure they all read well (EX: 24v12v5v etc). Also look for popped capacitors that would make the values lower than need be for the tv to power on properly.

The hiss is a popped (blown) capacitor! You need to replace it before you keep trying to power on the tv...you will cause more damage

Please rate if this helps!


Mar 07, 2011 | Samsung Televison & Video

1 Answer

Thomson 21"tv, with TX91 chassi, having picture


sounds like week signal. try on another aerial and retune.

Dec 22, 2010 | Thomson 21DC320 TV

1 Answer

TV goes blank - no sound or picture


Sounds like a bad capacitor or two in the power section. Do you hear a hissing sound also?

Nov 18, 2009 | Pioneer PRO-510HD 53" Rear Projection...

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

No picture, just a high pitch sound


Sounds like the flyback and horz output is shorted.

Nov 30, 2006 | RCA F32672SB 32" TV

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