Owon ODP3032 power supply problem

[Unixon]

Hi, all.

Unfortunately, the LCD backlight of my ODP3032 suddenly decided to quit. If I remember everything correctly, after working perfectly for few years the backlight recently just didn't came back after a few weeks long power off. PSU works fine, but I can barely see what's on display in reflected light. Does anybody know if this is a typical fault in this Owon PSU and is there a typical fix for that?

Update:

OK, I've opened up my unit and located LCD backlight driver on CPU board.
LCD backlight is driven by constant current boost DC-DC converter G5126 by Global Mixed-mode Technology.
Vin is at 5V, Vout is at maximum 28V, LED current is zero. CPU board ID is ODP3032_CPU_KZB_V1.7.

Does anybody have schematic or service manual for this PSU?

Looks like CPU enables backlight driver, but LCD has partially failed. Tried to reconnect backlight FFC few times, no luck.
LCD type is ACX503AKP-7 338A37D, second number is different to ACX503AKP-7 339A41D
mentioned earlier in other thread https://www.eevblog.com/forum/testgear/odp3032-experience/

Is it possible to get a replacement for this LCD?

Update2:

Looks like the LCD backlight is not the only problem, 2nd channel went 4.3% below set voltage in whole range, 1st channel looks fine.

[Unixon]

Up!