I think I just fried my LCD's PSU

CitrusXt · 29th December 2005, 04:01 PM

Hey! It's been a while since I posted. I finally got a decent 15'' LCD (400:1, 16ms).

I stripped the LCD with care, and everything seems to be undamaged. I still need to buy an FCC(sp?) extension from lumenlab, but the rest seems fine.

So when I actually tried to re-assemble the whole thing to test it before putting it in my projector's case, I tried to connect the power supply while it was sitting on a metalic object, resulting in sparks and a funny smell... >_<

...well, now when I try to read the voltage coming out of the PSU, nothing happens... damn, at least if I could have tested the damn thing one time to see if the rest works. Anyways, I'm telling you guys this because I'm searching for an alternate PSU.

are LCD monitors standard when it comes to Amp/Volt/Watts? Could I use the 12v rail of a normal PC PSU? Any ideas, it took me too much time and planification to give up now... I'm waiting for your opinions people!

snortonnorton · 29th December 2005, 05:46 PM

that sucks, i would of that laying it on metal would be safer than carpet with static electricity...

i guess you damned if you do damned if you don't

join the club,

i ruined 2 lcd's myself.

CitrusXt · 29th December 2005, 07:43 PM

I don't really think that PSU was all that special and unique... I just need to find the specs and I should be alright. Sorry to hear you've ruined 2 LCDs.

Any other inputs on this?

Gadgethead · 29th December 2005, 08:03 PM

I purchased a 15" LCD off of eBay that no longer had any backlight function. It was a grab for $40 total and the thing's great (XGA res. too) As for the power supply it didn't come with one or possess one inside so what I decided to do is just hook it up to one of my PC's PSU 12v rail. Do take special care to note which wires are indeed the positive and negative as the PSU plugs often have more than just two wires and the negative one is sometimes white (I ended up looking to a fan that was running off of one of the rails and piggy backed onto it). The voltage requirements for my monitor were 12 DC volts @ 3 amps. I can't seem to readily find any adapter's above 1 amp so that's another reason why I went with the PSU source to try and test the monitor. If your adapter is fried then you'll probably want to cut off the plug (with plenty of wire still attached to it) and then stick the two wires into the appropriate rail of the PSU. Just make sure your PSU has enough amps to support the LCD and that the voltage is correct (DC). Also polarity of the plug helps.

Good luck!
Cheers.
Chris B. in Iowa

CitrusXt · 29th December 2005, 08:22 PM

Quote:

Originally posted by Gadgethead
I purchased a 15" LCD off of eBay that no longer had any backlight function. It was a grab for $40 total and the thing's great (XGA res. too) As for the power supply it didn't come with one or possess one inside so what I decided to do is just hook it up to one of my PC's PSU 12v rail. Do take special care to note which wires are indeed the positive and negative as the PSU plugs often have more than just two wires and the negative one is sometimes white (I ended up looking to a fan that was running off of one of the rails and piggy backed onto it). The voltage requirements for my monitor were 12 DC volts @ 3 amps. I can't seem to readily find any adapter's above 1 amp so that's another reason why I went with the PSU source to try and test the monitor. If your adapter is fried then you'll probably want to cut off the plug (with plenty of wire still attached to it) and then stick the two wires into the appropriate rail of the PSU. Just make sure your PSU has enough amps to support the LCD and that the voltage is correct (DC). Also polarity of the plug helps.

Good luck!
Cheers.
Chris B. in Iowa

Fantastic reply!

> The voltage requirements for my monitor were 12 DC volts @ 3 amps.

this must be standard, phew

> If your adapter is fried then you'll probably want to cut off the plug (with plenty of wire still attached to it) and then stick the two wires into the appropriate rail of the PSU.

yea that's what I wanted to try... ty

I'm gonna try right now, I'll google to see what color is the 12v rail on a PC PSU, I'll keep you updated by the minute!

Cheers.

CitrusXt · 29th December 2005, 10:03 PM

Awesome!

It works, now I need to wait and see if that FCC extension will work...

'till next time

Gadgethead · 1st January 2006, 10:31 PM

Good to hear about the power source working and if you need help with how the FFC extension works just let me know. PM me or visit my website to see some photos I took of it. It confused me at first but works swell now.

http://communities.msn.com/portraitsmore

Chris B. in Iowa

CitrusXt · 5th January 2006, 05:31 AM

Quote:

Originally posted by Gadgethead
Good to hear about the power source working and if you need help with how the FFC extension works just let me know. PM me or visit my website to see some photos I took of it. It confused me at first but works swell now.

http://communities.msn.com/portraitsmore

Chris B. in Iowa

I got the FFC extension today, as you guessed it, it puzzles me... I'll try and look into your website.

CitrusXt · 5th January 2006, 07:17 PM

who the hell made/designed that plastic clamp? it's ridiculous how it could have been just a *little* spacier... I can't even clamp the 2 extremeties of my FCC extension...

I've seen posts with people scraping the top of the FCC, it might be the solution, but I've also read posts of people damaging the extension resulting in crying and feotus like positions for the victims.

... is it possible to use something else to 'press-fit' the FCC coming out of the LCD and the extension?

Thanks for the support fellow diy members!

Gadgethead · 5th January 2006, 07:33 PM

What I needed to do for my extension to work is to remove the black tape section that's on the backside of the extension. Next face the extension terminals to the terminals of the FFC cable of your monitor. Place these two into the ZIF connector in the "Hatch up" position (should fit in there with no pushing pressure needed). Then close the hatch and then just plug the other end of the extension to the other monitor board (may need to remove black tape).

It helps to look at the connector and ignore all the wires it has on the back side. Just look at it as a clamp and yes you could use different methods to keep the two pieces married to each other (something non-conductive ideally) Once you get the connector to work it'll be a breeze (had me stumped for some time too).

Let us know how it goes.
Chris B. in Iowa

29th December 2005, 04:01 PM	#1
CitrusXt diyAudio Member Join Date: Sep 2005	I think I just fried my LCD's PSU Hey! It's been a while since I posted. I finally got a decent 15'' LCD (400:1, 16ms). I stripped the LCD with care, and everything seems to be undamaged. I still need to buy an FCC(sp?) extension from lumenlab, but the rest seems fine. So when I actually tried to re-assemble the whole thing to test it before putting it in my projector's case, I tried to connect the power supply while it was sitting on a metalic object, resulting in sparks and a funny smell... >_< ...well, now when I try to read the voltage coming out of the PSU, nothing happens... damn, at least if I could have tested the damn thing one time to see if the rest works. Anyways, I'm telling you guys this because I'm searching for an alternate PSU. are LCD monitors standard when it comes to Amp/Volt/Watts? Could I use the 12v rail of a normal PC PSU? Any ideas, it took me too much time and planification to give up now... I'm waiting for your opinions people!

29th December 2005, 08:03 PM	#4
Gadgethead diyAudio Member Join Date: Oct 2005	PSU works well! I purchased a 15" LCD off of eBay that no longer had any backlight function. It was a grab for $40 total and the thing's great (XGA res. too) As for the power supply it didn't come with one or possess one inside so what I decided to do is just hook it up to one of my PC's PSU 12v rail. Do take special care to note which wires are indeed the positive and negative as the PSU plugs often have more than just two wires and the negative one is sometimes white (I ended up looking to a fan that was running off of one of the rails and piggy backed onto it). The voltage requirements for my monitor were 12 DC volts @ 3 amps. I can't seem to readily find any adapter's above 1 amp so that's another reason why I went with the PSU source to try and test the monitor. If your adapter is fried then you'll probably want to cut off the plug (with plenty of wire still attached to it) and then stick the two wires into the appropriate rail of the PSU. Just make sure your PSU has enough amps to support the LCD and that the voltage is correct (DC). Also polarity of the plug helps. Good luck! Cheers. Chris B. in Iowa

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29th December 2005, 05:46 PM	#2
snortonnorton diyAudio Member Join Date: Dec 2005 Location: tallahassee	that sucks, i would of that laying it on metal would be safer than carpet with static electricity... i guess you damned if you do damned if you don't join the club, i ruined 2 lcd's myself.

29th December 2005, 07:43 PM	#3
CitrusXt diyAudio Member Join Date: Sep 2005	I don't really think that PSU was all that special and unique... I just need to find the specs and I should be alright. Sorry to hear you've ruined 2 LCDs. Any other inputs on this?

29th December 2005, 10:03 PM	#6
CitrusXt diyAudio Member Join Date: Sep 2005	Awesome! It works, now I need to wait and see if that FCC extension will work... 'till next time

1st January 2006, 10:31 PM	#7
Gadgethead diyAudio Member Join Date: Oct 2005	Good to hear about the power source working and if you need help with how the FFC extension works just let me know. PM me or visit my website to see some photos I took of it. It confused me at first but works swell now. http://communities.msn.com/portraitsmore Chris B. in Iowa

5th January 2006, 07:17 PM	#9
CitrusXt diyAudio Member Join Date: Sep 2005	who the hell made/designed that plastic clamp? it's ridiculous how it could have been just a little spacier... I can't even clamp the 2 extremeties of my FCC extension... I've seen posts with people scraping the top of the FCC, it might be the solution, but I've also read posts of people damaging the extension resulting in crying and feotus like positions for the victims. ... is it possible to use something else to 'press-fit' the FCC coming out of the LCD and the extension? Thanks for the support fellow diy members!

5th January 2006, 07:33 PM	#10
Gadgethead diyAudio Member Join Date: Oct 2005	What I needed to do for my extension to work is to remove the black tape section that's on the backside of the extension. Next face the extension terminals to the terminals of the FFC cable of your monitor. Place these two into the ZIF connector in the "Hatch up" position (should fit in there with no pushing pressure needed). Then close the hatch and then just plug the other end of the extension to the other monitor board (may need to remove black tape). It helps to look at the connector and ignore all the wires it has on the back side. Just look at it as a clamp and yes you could use different methods to keep the two pieces married to each other (something non-conductive ideally) Once you get the connector to work it'll be a breeze (had me stumped for some time too). Let us know how it goes. Chris B. in Iowa

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