Re: LG 42LF561v picture dimming


Sorry for late reply. I did double check at the time. Will have another look tomorrow if I have the time. Sorry I'm not experienced in this at all and was hoping to see an easy fix like a blown cap on the board or something similar then I would have taken the board to a local repair shop to fix.

Why would the - pin read zero, is that what you mean by an open circuit, possibly in the LEDs? Why the dim picture? Are all the LEDs only semi bright or could 1 or 2 of the presumably 4 LED strips have fried?

On the male...

Hey guys

Our tv picture is quite dim, barely watchable now even with backlight and brightness settings set to 100% but like I say not a total picture failure so was wondering if the fault is with the led's or the power supply board?
Obviously don't want to waste my time and money replacing the led's if the problem just manifest itself again further down the line.


Took some readings at the led connector which has just the 2 wires feeding the led's.

On standby the pos pin reads around 270v though sometimes slightly more and sometimes slightly...

Re: New Members - please post your introductions here

Hi All

Signed up as looking to start repairing some home appliances. I don't have a great deal of experience in fixing electronics but find it intriguing and am keen to learn and this site looks impressive to me.