Question about Sharp Aquos LC-42D62U 42 in. LCD HDTV

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My flat screen tv is making a buzzing noise - Sharp Aquos LC-42D62U 42 in. LCD HDTV

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  • Jersey Mike Oct 14, 2008

    I have a 42" Zenith 1080p LCD TV and it makes a buzzing noise when turned on in the morning for some reason

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2 Answers

I had the same problem with my 37" Polaroid LCD TV. Two bad capacitors on the power supply. I'll bet you have the same problem. I replaced them and the buzzing is GONE!! About $2.50 each. Apparently, the next thing to happen is that it won't even turn on. The same solution works for both problems. If you take the back of the TV apart and when the circuit board is exposed, plug it in and turn it on. You'll hear a couple of capacitors buzzing just like your TV does. Replace them. Here's a link that also might help. TRY IT!!!
http://www.fixya.com/support/r741402-polaroid_flm_373b_lcd_tv_black_screen

Posted on Nov 08, 2008

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My flat tv is hot when used after 30 min. or so

Posted on Oct 16, 2008

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nick_helpap
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SOURCE: buzzing noise from rear of 26inch sony flat screen

cheak back light settings turn it all way up if down to low it will buzz in video options

Posted on Oct 15, 2008

welcomejee
  • 10594 Answers

SOURCE: buzzing/fizzing noise from back of sony flat screen tv

Below is an image of rear side of your TV, Sony KDL-40W5500
Top right corner is marked there and possible cause of noise seems back light inverter board, there are high voltage going to CCFL inside LCD panel and seems high voltage leakage causing that buzzing/ fuzzing noise.

Replace back light inverter board upon voltage leakage confirmation.
Thanks.

bd073ee.jpg

Posted on Oct 23, 2009

Testimonial: "Thank you very much for the very prompt reply. This seems a very likely cause. My TV is only a week old so I will contact the supplier. Thanks again."

  • 460 Answers

SOURCE: My tv makes a low humming buzzing sound about 3/4

there is a bad or what i call intermittant connection on the power supply board. when the bar and hum appears try firmly bumping with the palm of your hand the side of the set. if the hum and line go away then your set will have to go into the tv shop and the connectors on the p/s mod have to be reseated also the solder connections should be checked... this should help you a lot.

Posted on Mar 09, 2010

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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We had a power outage and since my tv does nothing, a tiny red light says standby but nothing changes.


Sounds like 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://electro-medical.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.

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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.

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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://electro-medical.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.

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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.
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Sounds like 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://electro-medical.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.

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This is not the fault with the remote control. It is the fault with TV itself. Check and replace damaged component/s at it main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magazine" will make surf easy. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis.

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