Question about Standard (CRT) Televisions

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Oh noh!!! that's bad!!! you should refer to your manufacturer/ liscensed technician coz it might the picture tube that causes the problem.

Posted on Jan 28, 2008

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What could be wrong with my Hi sense TV,it gives me a hissing sound,and does not light the standby light.

You listed this as a CRT model and a hissing noise from inside the unit means the high voltage transformer is leaking voltage. Turn it on in a dark room and look for sparks

Jul 23, 2016 | Standard (CRT) Televisions

2 Answers

1996 mitsubishi 40" tv has a black screen and

no pic at all usiually means the the heater element in the picture tube it self is burned out. Also there could be a problem with the internal power supply that gives electricity to the heater element. These are all thing the cunsumer cant fix. You either need to trust ONLY a certified Mitsubishi TV repair man, or replace the TV.
I know it's not great news, but if this advice helps, please give me a good rating.

Jun 30, 2011 | Mitsubishi CS-40505 TV

1 Answer

The problem I am having with my samsung tv is it has just recently started to make a hissing sound that I can only describe as the noise of a gas leak ...the pic etc is ok only having problems with sound...

This is a High Tension "Leak" this is a frequent occurance, it is the High Voltage drive to the screen that causes it. really you should have it looked at by a professional serviceman get a firm "Quote" for any fix before you proceed.

Jan 31, 2010 | Samsung DLP HL-P5663W 56" TV

1 Answer

Green Tint Screen on RCA 14F512T

are your speakers too close or your mobile phone sitting on top of tv?
try turning it off at the switch on the tv, does that clear it
may need de-gausing, have it checked at an approved tv dealer.

Sep 29, 2009 | Aiwa F2000 20" TV

2 Answers


Norcent PT4233 no picture, black screen, but has sound. How to repair

The display (PDP - Plasma Display Panel) at the heart of this unit is a LG 42V7 model. There is a known bad solder "defect" on the YSUS board that causes this board to fall unexpectedly.

The bad news is that you have to replace all the primary boards on the display - ZSUS, YSUS and CTRL boards, as the failure can/often takes them all out.

The good news is that LG makes a repair kit for this panel. Its part number is 687VSNB03E and it contains the three boards LG6871QYH036D (Y SUSTAIN), LG6871QZH041B (Z SUSTAIN) and LG6871QCH053G (CTRL).

Hope this helps

Sep 04, 2008 | Norcent Technologies2703 27" TV

3 Answers

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

1 Answer

Sound problem

Is it a hissing sound ? If it is a hissing sound and you can smell ionized air (ozone) then there may be some high voltage leaks (corona discharge) in the High voltage supply coming from the flyback transformer. This happens when there is a path to ground because of dirt dust or spider web, or your surrounding is humid.

May 22, 2007 | LG 30FZ4D TV

1 Answer

Sanyo TV DS32224

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

Mar 23, 2006 | Sanyo DS27910 27" TV

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