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/diy/ Do-It-Yourself

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Anonymous 2014-10-04 03:04:44 No.706345

[Missing image file: ]

Heya, /diy/. I've procured a massive LCD screen from an e-waste dump, and it _almost_ works. When I plug it in, I correctly get a detected monitor, the backlight turns on, and then... nothing. The screen is white. I figure that this is probably some sort of issue with the chip that sends the signal to the LCD panel itself, does anyone know where I could get one of these? I remember hearing before that it's a chip that would have to be flashed with the firmware for the particular LCD panel, if that helps. Can't remember the name, though.


>>
Anonymous 2014-10-04 03:15:45 No.706351
>>706345
10 second google
step it up fag
https://www.youtube.com/watch?v=SARGnOExL8c

>>
Anonymous 2014-10-04 03:17:00 No.706352
>>706345
That could be anything from a fault in the graphics mode circuits all the way up to wrecked interconnects on the LCD panel itself. Suggesting it will be an easy fix because the backlight is still good is like suggesting a blown car engine will be easy to fix because the battery still has charge. If it is as big as you say it is it is likely fucked beyond economical repair. People do not throw out massively expensive gear unless it it thoroughly shafted.

Now how about you post some specific info about the display as well as some pictures of the layout instead of that unrelated rubbish so we have half a chance of helping you?

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Anonymous 2014-10-04 03:24:50 No.706359
>>706352
> If it is as big as you say it is it is likely fucked beyond economical repair.
If it came from an office they dont give a flying shit if it was expensive or not. If it isnt working they will not open it up and try to fix it.

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Anonymous 2014-10-04 03:33:49 No.706366
>>706352
>Implying big = expensive
>implying companies give a shit
I've had to "throw out" computers because they began BSODing due to a hard drive failure. Of course, it now sits in my house, but if someone cared less than I did it would easily end up in the bin. People throw away things just because they don't work any more and it would be a pain in the ass to figure out what's wrong even if it's a simple fix.

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Anonymous 2014-10-04 18:33:31 No.706611
Sorry I didn't post specifics earlier.
Here's what the inside looks like, the board on the right is the one that I supposedly need to replace. I have no idea what it's called. The reason that I pointed out that backlight works was because it means that the power supply isn't the bit that's at fault- I wasn't trying to imply that because it works, it all should work.
High-res image incase I missed a damaged component I couldn't see or something, but I've combed over this thing and found nothing.

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Anonymous 2014-10-04 19:23:00 No.706623
>>706611

well I would suggest removing that board on the left and inspect the component side. it could be a matter of a bad capacitor. monitors are notorious for having bad caps cause them to fail. and replacing a capacitor is easy fix if you know how to wield a soldering iron. also if possible post higher res images of the boards component side. you can spot a bad cap by looking at the top if you see a bulge at the top and/or brownish spots or liquid on the top most likely its gone and could be the problem

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Anonymous 2014-10-04 20:54:39 No.706652
The board on the left is functioning fine, as far as I can tell... The transformer looks a little heat-damaged but it's obviously working fine because it powers up and such and as far as I can tell it only deals exclusively with power instead of signal. Here's a closeup anyway

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Anonymous 2014-10-04 20:56:03 No.706653
And here's the signal board

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Anonymous 2014-10-06 08:40:57 No.707218
Bump for interest, I have a similar problem

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Anonymous 2014-10-06 09:03:59 No.707222
How many spare boards have you got on hand?

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Anonymous 2014-10-06 10:21:26 No.707237
>>706611
it's called an LVDS board or signal board or main board. it does all the signal processing. could be something as simple as a power regulation problem bro.

also the part number is printed on a sticker at the top
l22hcaq-uh6

is that a 22" HP monitor and not a big ass lcd screen?

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Anonymous 2014-10-06 10:27:31 No.707238
http://h30434.www3.hp.com/t5/Desktop-Audio-Video-Monitors/HP-Pavilion-w2216h-Monitor-Repeating-Problems/td-p/876365

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Anonymous 2014-10-06 14:27:15 No.707282
>>707237
My sense of big is skewed by my poverty







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