What do do with a dead LCD?

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eitai2001

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Hi Guys.

One of my clients gave me a dead LCD to do what I want with.
Its a 19" BenQ LCD. The actual screen appears to be fine, but when you plug it into the power, there is no sign of life.
I have disconnected the LCD from the circuit board. Do any of you know any nice hacks that I can use to get the thing working ... or do any of you have any old 19" LCD's with crack screen that I can have the circuitry?

I'm open up to any idea's ... this cost me nothing and I'd like to do something with it to make it useful again.

Regards

Itai
 
To drive the LCD on it's own requires a GPU. To build a circuit like that would require some sort of FPGA evaluation board at a minimum.

I presume the power supply is damaged, in which case you're buggered as it generates the high tension needed for the backlight. Fix the PSU and you probably will return it to a working state.
 
My guess is its the LCD's PSU as well ... but my multimeter is broken, so I can't see if its outputting the correct voltages :p.

Are these things PSU's standardized, cause then I can just get a PSU from another person with a broken screen if I can find someone. The people that repair these things, are they expensive ... cause if its like R200 or R300, its worth it.
 
Try MTC Repairs www.mtcrepairs.co.za maybe you can take the monitor their for a quote on the Repair. They do BenQ Products so they should be stocking the parts.
 
Last edited:
Ag man ... I meant to say Packard Bell ... dunno where I got BenQ from :p
 
eitai2001 said:
I'm open up to any idea's ... this cost me nothing and I'd like to do something with it to make it useful again.
Click to expand...
There is a really awesome vid only where they used an LCD and an projector (the ones lecturers write on with pens) to make an overhead projector (as in those 20k things you hook up to a PC).:eek::cool:
 
A while back my boss gave me an LCD that wasn't working. I got lucky - I stripped and cleaned it then re-assembled and it worked fine after that:D. I sold it with my pc after I bought my laptop:).
 
Ok ... I have taken a good look at the PSU, and it looks like the bunch of smaller capacitors or bulging slightly at the top, and 2 of them of a small dollop of brown substance. Is there a way to test if the capacitors are working with a multimeter or something ... so that if they aren't, I can replace them.
 
The slight bulging *might* be normal. The brown substance isn't. If you can figure out what exactly they are then you might be able to buy a replacement & solder it on. Just be careful with the soldering...cause the heat travels fast & can damage other stuff.
 
The bulging is a concern. The brown stuff is usually glue they use to glue the caps down to the PCB.

Why not PM me a photograph so I can advise?
 
HavocXphere said:
The slight bulging *might* be normal. The brown substance isn't. If you can figure out what exactly they are then you might be able to buy a replacement & solder it on. Just be careful with the soldering...cause the heat travels fast & can damage other stuff.
Click to expand...

Paperclip FTW!
 
Well have you heard about that technique where you massage/rub the dead pixels to life? Well I heard that if you hit the screen with a 10 pound hammer, kind of massaging it a bit... It looks really freaken awesome ;)
 
SlyFly said:
Well have you heard about that technique where you massage/rub the dead pixels to life? Well I heard that if you hit the screen with a 10 pound hammer, kind of massaging it a bit... It looks really freaken awesome ;)
Click to expand...

Ya, I heard that one too ... one of my friends took his dead LCD and used a shotgun on it ... straight after the LCD apologised and got back to work ;)
 
nah, wait until one of your clients orders one, then deliver it and assemble it and then go ooops and knock it off the table...........the look on his face, priceless.

you did check that its not under warranty - most LCDs are 3 years or so...me thinks crappard bell are from pinnacle (how they not bankrupt) micro?
 
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