Question about Proton Televison & Video

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The screen is green when I turned on my Proton 4250 42 In. LCD Television

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  • Proton Master
  • 6,694 Answers

The TCON board or the LCD panel is faulty. You have to change the tcon board to confirm the fault
If you wish to get some details; check the site linked here. Pull up older posts. http://electro-medical.blogspot.com/

Posted on Nov 24, 2016

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6ya6ya

6ya staff

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SOURCE:

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Posted on Jan 02, 2017

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Steve Allison

  • 5569 Answers

SOURCE: the red light for power

If it's failing to turn on, the main power supply is probably at fault and without some technical background and a couple of test instruments, you will not be able to do the repair yourself.
What you can do though is; unplug the set, let it stand overnight or at least several hours, remove the back panel and look for a separate board with mostly larger components on it; it will have a ferrite core (no laminations as with a line-frequency part) transformer on it and several larger capacitors which are cylindrical and mounted vertically to the board.

Before touching anything inside, especially on that board, allow several hours to be safe since the larger capacitors can hold a painful voltage charge for some hours.

If you see signs of overheating such as discoloration of the board material, the PSU may not be repairable but if you can find a part number on the board, you might be able to buy the power supply from the mfr. and install it yourself but it will likely have the same problem eventually unless they have altered the design or improved component quality.
If there are no signs of heat damage to the board, there may be companies offering to repair it as a subassembly instead of repairing the whole set which could be much more expensive.
If you choose to replace or have it done, the main power supply still may not be at fault since most are capable of switching on and off if a downstream problem is causing an overload and the power supply for the backlight may have failed and is causing an overload shutting down the main supply.

Posted on Mar 24, 2011

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Unplug the television and plug it in to another electrical socket.
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Try turning the television on with the remote.
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http://www.retrevo.com/search/v2/jsp/downloadPage.jsp?doc=dde1880d298054849d8c8adc90514f40&modelid=22971545&q=Proton+CS-37
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