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Tv making buzzing sound from power board lgpc3d-ud

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6ya6ya
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Posted on Jan 02, 2017

MNfisherman
  • 11896 Answers

SOURCE: LG lcd tv - 32lg30-ud

This could very well be and most commonly be a bad power board. The power board is where the power cord attaches to the power board or a power inverer to the power board. Then the power board has capacitors and resistors on it that limit and distribute the power evenly through the system. The caps can go bad, leak, burn out, swell up, ect. The same with the resistors.

Posted on Oct 19, 2010

gopakumarg43
  • 74136 Answers

SOURCE: 42MF437B/37 magnavox tv no power making buzzing sound

It sounds that there is some shorted component/s one either main power regulator board, or at the main digital board. Your TV need a through checkup.

Posted on Sep 11, 2012

gopakumarg43
  • 74136 Answers

SOURCE: 42MF437B/37 no power making a buzzing sound

Contact any experienced service technician or at the authorized service center for Maganavox.

Posted on Sep 11, 2012

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1 Answer

Buzzing sound from my hisense led LCD tv


The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
Search the site by type in the "brand name" to your device; in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Sep 30, 2016 | Generic F46K20E Hisense 46 in. LCD HDTV

1 Answer

Tv was working fine last night ,went to turn it on tonight ,no sound or picture,but you hear a high pich sound ,buzzing noise by where you plug in the jacks


Fault to the main power supply regulator section. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

Mar 04, 2016 | Emerson Televison & Video

1 Answer

42MF437B/37 magnavox tv no power making buzzing sound


It sounds that there is some shorted component/s one either main power regulator board, or at the main digital board. Your TV need a through checkup.

Sep 11, 2012 | Philips Magnavox 42MF521D/37 Television

1 Answer

42MF437B/37 no power making a buzzing sound


Contact any experienced service technician or at the authorized service center for Maganavox.

Sep 11, 2012 | Toymax Magnavox 42MF437B 42 in. LCD TV

1 Answer

Why is their a buzzing noise when my flatscreen Samsung tv is on


Usually the sound is coming from the power supply board in the TV--a transformer is vibrating hard enough to make it--had a lot of new ones in warranty that worked perfect but had a buzz---replace the power supply board and problem usually is fixed.

Apr 10, 2012 | Samsung Televison & Video

1 Answer

I have a LG 42pc3d-ud i can get green (power light) but know picture on tv (like power is off and have humming sound comming from back


From your description it sounds like your TV it's actually on you just can't see a picture. That is usually caused by your Zustain boards. The zustain boards are located on the left and teh right side of the TV. You can check the fuses to see if one of them is blown or you can leave it on and see if one of them does not heat up. You would have to replace the board. You can find part at www.interliquidparts.com

Jun 06, 2011 | LG 42PC3D 42 in. Plasma Television

1 Answer

Samsung plasma tv pn42a400c2dxza. when i try to turn it on it starts making clicking sound than it starts buzzing. i unpluged everything from the power supply and the buzzing sound stopped. but when i plug...


This problems is the power supply board is causes and the problems.Try website like Ebay.com buy a whole refurbish power supply board for the replacement,will solved this problems.

Nov 29, 2010 | Samsung PN42A400 42 in. Plasma TV

1 Answer

Buzzing noise coming from Vizio HD TV speakers


It ur Vizio tv,The power supply board is the problems.The transformers in the power supply board have gaps in the transformers.The high voltage curents flow that make that buzzing noise.

Apr 07, 2010 | Vizio VW32L 32 in. LCD HDTV

2 Answers

Buzzzzzzz


Hello to all you buzzers, I have the answer to your problem. First this is what's happening. The buzzing is coming from the power relay. It vibrates at 60hz because the power supply filter capacitor is not doing its job hence you have a rough d.c. pulse going to the relay.To solve the problem remove back of t.v. slide circuit board out (you will have to disconnect white wire from degauss coil,located on left front) look for a blue box approximately 3/4"x1 1/2" this will be the power relay. Now look for capacitor location #c622 near the relay. This capacitor should be 470uf 25v. Remove and replace with 470uf 35v capacitor, connect white degauss wire temperarily put back on and give it a spin. Hope this solves all the buzzin,robert

Jul 12, 2007 | Sanyo DS24425 24" TV

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