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Rick B. Posted on Nov 12, 2017
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My question on degaussing a Sharp lc 40c37u was answered yesterday by Larry who said I need to use a degaussing coil. I'vd read you only use those on CRT's and my TV is an LCD screen. Who's right?

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Larry

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  • Sharp Master 5,042 Answers
  • Posted on Nov 13, 2017
Larry
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If your TV is a LCD its not going to need to be degaussed..just CRT's need that, all it does is take the stray magnetism out of the picture tube to get the colors right. What gave you the idea a LCD set needed degaussing?

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Vernon Taylor

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  • Sharp Master 7,446 Answers
  • Posted on Nov 12, 2017
 Vernon Taylor
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Degaussing is the process of removing unwanted residual magnetism from the iron core of wire coils. The process maintains or improves the efficiency of such coils and on later crt tv and monitors the process was often done automatically on startup. It is a brief but noisy process. Degaussing was (is) also used on magnetic record/replay heads and suchlike.

CRT monitors and tv use strong electromagnets to make the spot scan into a picture. I don't know how scanning is carried out on a flat screen tv but Wikipedia remarks the flat screen display has displaced the magnetic scan systems...

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5 Related Answers

Jerry Umali

  • 979 Answers
  • Posted on Oct 12, 2009

SOURCE: My Sharp Aquos LCD TV LC-40C37U will not power up.

Good day sir/maam, chances are, yes or no, yes, the surge do has the ability to damage your TV, but no, modern TVs are autovolt (it can work from 90v-240v) so check the manual or back panel to confirm. The most deadly part of the surge is it can hit more than 500v at a split of a second, damaging your TV's switching power supply. The TV's power supply is bad. it cannot produce the proper voltage to power your TV. thats why its on standby. Bring it to your dealer for proper advice on the status of your TV.

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Anonymous

  • 57 Answers
  • Posted on Feb 24, 2010

SOURCE: Need owners manual for Sharp 46'lCD TV Mod.#LC-46SB54U

Owners manuel can be found at www.managemyhome.com right hand side--enter man and model #, to avoid having to sign up, right click and open in a new window when the pdf file pulls up. Its their I just checked.

Anonymous

  • 13 Answers
  • Posted on Feb 26, 2010

SOURCE: Darker screen on the right hand side of my Sharp

try going to menu and center the screen both vertically and horizantal, the manual should help

Anonymous

  • 1 Answer
  • Posted on Feb 27, 2010

SOURCE: I need a diagram for lcd tv Sharp LC-26SB14U.

I have a sharp LCD (LC-26SB14U) which I purchased one year ago and today the sound stop working as I was watching the olympics. Any idea how to fix this problem as the warranty is only good for a year.
Thanks, Bob

Anonymous

  • 308 Answers
  • Posted on Apr 30, 2010

SOURCE: If my Sharp Aquos 37in LC-40C37U tv needs to be

Blinking light is an error code. Count the blinks before they repeat. Check your manual in the troubleshooting section. If you can't find it, contact a Sharp service center or try and get a service manual. Reset info is also in the user manual but you can't do it if your set doesn't power up. Are you sure about the power board?

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Problem with degaussing coil locking out main control

Check the degaussing posistor. Replace it with a new on of same type. There are so many types of this component. Might look like these.
7_4_2012_1_21_26_pm.jpg

7_4_2012_1_21_46_pm.jpg7_4_2012_1_21_58_pm.jpg7_4_2012_1_22_09_pm.jpg
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Ok.... I got a new power supply board and the tv is still doing the same thing. (Sharp Aquos 37in LC-40C37U) So if it is not the power board then what could be wrong with it. I'm getting no power and only...

The pattern of the blinking is a code. If the power light is blinking by itself once per second or thereabouts it could be loose connection to Inverters, reload firmware, Inverter Unit or LCD Panel.
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If my Sharp Aquos 37in LC-40C37U tv needs to be reset how would I do that? Not getting any power, only a green blinking light. The power supply board checked out ok.

Blinking light is an error code. Count the blinks before they repeat. Check your manual in the troubleshooting section. If you can't find it, contact a Sharp service center or try and get a service manual. Reset info is also in the user manual but you can't do it if your set doesn't power up. Are you sure about the power board?
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Blinking led

Free diagrams unlikely to be available take the board's out and check for blown capacitors following good antistatic procedures and decide from there
Or find a good independent repair specialist to do the work and set your self a budget
My sharp aquos stopped working with a blinking power light £2000 was the repair quote for a new board and LCD panel for a £699 TV after they tried the capacitor replacement
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Sansui picture is fluorescent ping purple green, etc. Worked fine yesterday.

HELLO

By the sound of this you have a degaussing problem! I think what has happened here is the degauss circuit has failed and the usual cause is the POSISTOR.

What you should try to do is switch the TV on, then OFF again and leave it for 30 mins before switching on again. When you have done this and the problem is no better, then contact a service centre who will cure the fault for you.

Alternatively, try to borrow a DEGAUSS COIL and with the set on, switch the coil on and by using a circular motion go around the screen of the TV moving backward slowly as you do it. When you are say 6 feet away from the screen switch the degauss coil off.

HOPE THIS HAS HELPED YOU (:-)
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My Sharp Aquos LCD TV LC-40C37U will not power up. The green power lamp at the bottom right is blinking. We had a power surge last night, I even measured 180V on the power outlet. Is my TV now damaged?

Good day sir/maam, chances are, yes or no, yes, the surge do has the ability to damage your TV, but no, modern TVs are autovolt (it can work from 90v-240v) so check the manual or back panel to confirm. The most deadly part of the surge is it can hit more than 500v at a split of a second, damaging your TV's switching power supply. The TV's power supply is bad. it cannot produce the proper voltage to power your TV. thats why its on standby. Bring it to your dealer for proper advice on the status of your TV.
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Audio O/K no picture . Model Sharp LC-32SH12U. Thanks "Larry"

Check for a backlight failure by holding a flashlight on the screen at about a 30-degree angle, a couple of inches from the screen. Look at the area around the flashlight beam. If you see video, either your backlight fluorescent tubes are burned out or the inverter has gone bad. If you need tubes, search for "CCFL replacement" (CCFL = cold cathode fluorescent lamp").
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