HP ZR2440w single edge LED misbehaving

[flower_power]

I've recently started having a part of the bottom of my monitor start to give me backlight issues. Sometimes it works great with no dimmed sections, other times there is a segment (as pictured) that is dim, other times the segment is about twice as long as pictured. It seems to be random, though if I power-cycle the monitor, it will get worse/better randomly. Is this potentially a capacitor issue, or would a capacitor cause different symptoms? Would a faulty LED sometimes fail to power on intermittently?

[flower_power]

Re: HP ZR2440w single edge LED misbehaving

Got the monitor disassembled (The front bezel is tool-less and a PITA!), doesn't appear to be any extruding capacitors...

[Stefan Payne]

Re: HP ZR2440w single edge LED misbehaving

With an issue like that I'd suspect the LED strip.
Something like a dying LED or bad connection.

[ReeceyBurger123]

Re: HP ZR2440w single edge LED misbehaving

With an issue like that I'd suspect the LED strip.
Something like a dying LED or bad connection.

+1 correct there.

[flower_power]

Re: HP ZR2440w single edge LED misbehaving

To follow up on this, I was able to narrow down the bad part to the LED strip that runs along the bottom of the Display by swapping the PS + Mainboard between identical monitors. Unfortunately, it doesn't appear the LED strip is available anywhere, so I guess I am out of luck and have to get a new monitor.

[vinceroger69]

Re: HP ZR2440w single edge LED misbehaving

maybe a slight modification and use something like this?
http://www.ebay.co.uk/itm/490mm-22-L...3D141818678470

[Th3_uN1Qu3]

Re: HP ZR2440w single edge LED misbehaving

Since you went this far, you can remove the LED strip and replace the bad LED with a similar one from a cracked screen. There are not that many models of LEDs for backlighting so it won't be hard to find a suitable one and it is a simple soldering job.

[ReeceyBurger123]

Re: HP ZR2440w single edge LED misbehaving

Shame to see that even Led monitors are failing in the same way as Tv's crappy, cheap Leds going pop.