LG 23MP65HQ monitor Repair

[paulossant]

Greetings members, this is my first post here. Recently I found a Monitor LG 23MP65HQ but there is a problem with the main board.

I ordered another one from ALIexpress and received a busted one 

So I'm replacing the caps and measuring the signals.. trying to find the problem.
At the 5V5 pin I got 2.5V, so I'm trying to fix that for now..

Anyone can point me to a service manual? I cannot find anything on Google..

Best regards,
Paulo dos Santos

[PKTKS]

loosely fast best match
https://elektrotanya.com/lg_chassis_ld93a_m2362d_pzl_sm.pdf/download.html

Paul

[paulossant]

Thank you for the answer, but it doesn't suffice my needs.
I'm trying set parallelism between the two boards I have.

In the old one I sucessfully measured the 340kHz PWM signal from the APW7301 BuckConverter, that provides the 5v.
I'm trying to figure out the same signal but the Ic is below a metal case for the hdmi and vga connectors. The inductor with the same label as the old (L102) receiving the pwm signal is only getting a stange signal (See Atachment)

Thank you so much

[Rasz]

how about powering it from lab supply to check if it will work at all?