Re: Dell U2410F smudging



It was turned on for few years, lets say 8-10 hours a day. Then It was off for about a year.
The smudges last for few minutes - depending on background, contrast intensity etc.

As I'm thinking about this problem I can imagine that there is an issue with something that should give sharp edge of information on = 1, off=0 but sometimes it stays in almost 1 or almost 0 state, then the matrix does turn the pixel on and off - sth. like button bouncing.

Any idea what should I check first ?...

Hello,
I got old monitor and it's smudging a lot.
Old image is left on black, window frames leave sharp llines...

Is this fixible issue?...

Re: HP ZR2740w almost dead



Hello,
finally I had enough time to investigate everything again.

The problem was broken LED stripe connector, when it was pressed everything was fine. After a moment everything went wrong. That's why I get 30V per LED power line every time.

I have soldered new connector and everything is fine now. Everything works like a harm.

Good thing is that during replacement of caps I have wrote down their values. I this is what I have found:

[CODE]
Motherboard
C66...

Re: HP ZR2740w almost dead



Helo,
My case stops here.
Everything is disassembled on my desk.

When I turn on main switch S801 LED are On with hight backlight (bright), after few seconds thay dimm to 50% (let's name it like that, but it's not mesured 50%), and after another few seconds thay dimm even more - again let's say 25% of light.
After that, they stay lighten up all the time but very dimmed.
No input signal is given form PC, but there are pull-up resistors to force 3.PS-ON and 2.On/Off - so, turn on power supply and...