Haier LE50M600 turns on but only for a split sec

[predator0357]

Hi
got this TV to repair, it turns on but only for a split sec (flash).
Any suggestions? what to check first and so on?

[dick_barton]

Re: Haier LE50M600 turns on but only for a split sec

I would check the led output connector voltages and see if the voltage peaks then drops off quickly. Initially it is looking like a possible led(s) fault.
You could also check you have the voltages on CON201

[mmartell]

Re: Haier LE50M600 turns on but only for a split sec

I had a Haier tv with a similar looking power supply board as yours that had led backlight issues. Turned out the connectors for the led strings were intermittent at the board. Had to remove the wires from the connector, strip them back a little and solder direct to power supply board.

Top right in your first pic. Maybe worth a look.

[predator0357]

Re: Haier LE50M600 turns on but only for a split sec

I would check the led output connector voltages and see if the voltage peaks then drops off quickly. Initially it is looking like a possible led(s) fault.
You could also check you have the voltages on CON201

Did it and it peaks then drops to 21V
On the con201 all V are ok.
Did also what the one below said and nothing.
But ther was something weird, one of the it work perfect but after i turn it down. It went back to not working😭

[predator0357]

Re: Haier LE50M600 turns on but only for a split sec

Some1 pls help��

[dick_barton]

Re: Haier LE50M600 turns on but only for a split sec

Did it and it peaks then drops to 21V

But what was the peak, maximum voltage reached?

[neilc6]

Re: Haier LE50M600 turns on but only for a split sec

Flash of backlights in a LED TV is a symptom of bad backlights. https://techhometravel.com/lg-ln-ser...ed-backlights/

[predator0357]

Re: Haier LE50M600 turns on but only for a split sec

/

[predator0357]

Re: Haier LE50M600 turns on but only for a split sec

I decided to tear down the TV and found out that half of the backlight dont work, but there is V. In one pin there is 102V and other pin there is around 32V.
When i disconnected the upper strip nothing works. with the ones that not working i also did it but still only the upper part flashes.
Any sug'?

[dick_barton]

Re: Haier LE50M600 turns on but only for a split sec

Search Youtube which will show you how to test the leds. Plenty of videos online.