Question about LG 50PA5500

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No picture have sound no picture worked ok turned off at night after watching next day there was no picture but have sound

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  • Contributor
  • 6 Answers

If u r a technician turned on the tv.remove base board from tv on running tv & put it again care fully.when u do this dont turned off tv.

Posted on Jul 04, 2015

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  • LG Master
  • 749 Answers

This is a common problem with this TV caused by a failed buffer board, usually the top one.

Here's two links that explain it, tell you how to test it and provide solutions:

http://www.coppelltvrepair.com/p/1173/lg-50pa5500-ua-top-buffer-board-replacement-for-tv-starting-with-no-image-problem-50-credit-for-old-dud

https://www.youtube.com/watch?v=z3dxCJ3CaTs

Hope this helps!

Posted on Jul 04, 2015

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 4102 Answers

SOURCE: 42 inch LG Plasma TV Lost Picture

Hi it sounds like it has had an elctric fault like a resistor failing.
The click you heard would be a internal switch that cuts off the elctric supply to the screen to stop furthe damage hapening.
It could even be something simple like a bad solder and in that case will need locating and resoldering.
How old is the telly and how often is it used.
When you switch it off leave it off for about an hour then try again if you have allready done this then it probably is a blown resistor are you sure nothing has been pressed on controll have you tried seeing if you can acess the menu screen via the remote and see if that comes up on the screen let me know ok

Posted on Dec 14, 2007

freetek
  • 5568 Answers

SOURCE: picture lost sound still ok 42" LG

Since it is coming back after a union-like break, it is probably the inverter for the fluorescent backlight rather than the light itself; they can flicker and die but normally don't recover after a rest. The inverter may be a separate board in the unit and you should be able to recognize the right board due to its relationship to the backlight.
This kind of problem will not repair itself but decay further with time.

Posted on Sep 04, 2009

jdvillanueva
  • 2098 Answers

SOURCE: our lg tv was going ok the night before and when

Hi,

This is an indication that you have a problem on the power supply section or on the load because of the following reasons : 1. Over Voltage - the regulator might be cycling on over voltage due to lack of load. 2. Over Current Protection - excessive load or faulty power supply cycling will trigger the over current protection circuit. This is because of open fusible resistor in line with a shorted Voltage regulator IC. 3. Leaky Capacitor - a dried up main filter capacitor or other filter capacitor in the power supply that is producing an out-of-regulation condition. A bad filter capacitor on the output of a series regulator may result in excessive/drop of voltage. 4. A problem with the microcontroller, relay or its driver, or standby power supply.

This is not DIY and quite technical, I've advice you to look for a qualified technician or send it to repair shop to isolate the problem.

But first check if your unit is under warranty then avail it because the manufacturer of your unit will fix it for free or with a little charge only.

Hope it may help you.



Have a nice day!



Thanks for using Fixya.

Posted on Feb 10, 2011

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