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There's a high frequency noise coming from my playsonic tv. Help?

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You have a bad diode in there,

Posted on Nov 18, 2014

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Posted on Jan 02, 2017

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SOURCE: i want to tune a vcr to a playsonic tv. the vcr

I don't have the remote control with me, how can I do to put AV1, without remote? Its that possible?

Posted on Oct 09, 2012

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Lcd32f 1080p


There is only one possibility of noise [high-frequency] to LCD TVs. It should be coming from its back-light inverter board. The ferrite cores of the inverter transformers at the back-light inverter board can make this noise; if there is any loose fittings. Check it.
Gopakumar Gopalan Google

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Subwoofer makes noise like an untuned TV regardless of volume knob


I would suggest your crossover unit has failed in the speaker cabinet. The crossover circuit board separates the low and high frequency content of your stereos audio signal. The low frequencies go to the bass unit (woofer) and the high frequencies go to the tweeter speaker. If the capacitor on the crossover goes open or near open circuit then noise is introduced into the sound system. Replace either the capacitor or crossover unit.

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Playsonic tv


It can be bought from electronic spare part selling shops.

May 12, 2013 | Televison & Video

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My tv started to hum have figured it to be part of the backlight NEED HELP?


Hello Sir, Hi, if that is the case, your inverter board is generating audible high frequency noise. the inverter board is true to produce high frequency pulse needed by the LCD, but if should not be audible. try replacing the inverter board and see if the noise will dissapper .

Jul 17, 2012 | Insignia NS-LDVD26Q-10A 26 in. HD-Ready...

1 Answer

Hi I have a very annoying, ear piercing high frequency pitch coming from what seems to be the television. However, I was trouble shooting and based on the cable technicians thought; said to be the...


Hello
The LOT [Line Output Transformer] of your TV has damaged. It is the one, that supply all the voltaged needed to CRT. Its internal windings will get shorted in between, and is irreparable. Replacement is the only remedy to this proble. Replace the horizontal output transistor also with this. you haven't specified whether there is picture with your tV or not. If this high frequency sound is along with picture, there is some loose in the cores of the SMPS transformer, or LOT itsef. If there is no picture at all, and this high frequency sound is there, no doubt; LOT is damaged. OK.

May 22, 2011 | JVC TM-2703SU 27" TV

1 Answer

High pich sound comes from the connection and the back of the TV. If I press on the back of the TV it can help quiet the noise.


The noise can be caused by a ferrite bead "whistling" at a harmonic of the line frequency or power supply frequency. It can also be caused by line coils rattling. The fix can be as simple as nail varnish on the offendig component.
If you are going to attempt a repair. Be very careful!!

Mar 01, 2011 | Televison & Video

1 Answer

I have a SANYO model # AVM 3659G, Wont come back on


Hi, that probly a power supply plroblem, or a high voltage regulator and the horizontal transistor that drive the high voltage transformer at a high frequency (15.000 hz )if you think you can trouble shoot that ok; if not ask a friend who you no he nows about trouble shooting in tv. or you can go to a repai r shop should not cost to high half hour + parts
Beware high voltage in there(30 thousand volts
hope that help you

Mar 13, 2010 | Sanyo AVM-3659S 36" TV

1 Answer

High pitch frequency noise coming from rear of TV and is very annoying to listen too. It is a constant noise and is more apparent when there is more black color on screen.


High pitch sound on LC-42D62 is reproduced by switching transformers on power supply board. To correct this problem, you will need to remove power supply unit from the TV, spray all transformers with SILICONE CONFORMAL COATING. Let it dry for 12Hrs. Then install power supply unit back.

Dec 31, 2009 | Sharp Aquos LC-42D62U 42 in. LCD HDTV

1 Answer

I want to tune a vcr to a playsonic tv. the vcr


I don't have the remote control with me, how can I do to put AV1, without remote? Its that possible?

Mar 14, 2009 | Televison & Video

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