Lenovo

I have a Lenovo 3000 N100 0768 -04U laptop and I have no screen . I get occasional weird red flashes when I use the two keys to connect to a monitor. I had it working on a monitor but after getting Windows up dates I can not get the monitor to work now. I have had it fixed 2 times, once under warranty, and once for $4oo+. I am petty sure it is the inverter board. I have downloaded the manuals from the Lenovo web site.
Is there a repair manual or a good site that I can us to repair this laptop? And how much is the inverter board???...Don

Hardware maintenance manual:

http://www-307.ibm.com/pc/support/si...cid=MIGR-63486


Inverter: Google is your friend

Thank you CCT, where would be a good place to get this inverter board. I don't want to use Lenovo if I don't have to, afraid I will get yet another bad one......Don

I have never bought one so I cannot factually say where a 'good' place would be.

This site has a large inventory ; http://www.sparepartswarehouse.com/


gl to you



edit:

I am NOT sure what the PM meant but I don't respond to them anyway. People looking for help cannot read them.

How are things progressing?

Got the part ordered! Be here next Wensday. Had to take front bezel off, my 8 yr. old grandson could have done it. A little worried if I have the right part, Manual was a little confusing. Looked up The inverter No. that was in it and came up with a Compaq part???

Interestingly enough, with a different search string, I found this site;

http://www-307.ibm.com/pc/support/si...IGR-68083.html

SparePartsWarehouse indicates 3 possible 15W inverters made for the N100 series;

41W1318
41W1319
41W1393

The Lenovo site specifies 3 makes of model specific inverters, but doesn't show an 'O4U' model.

What part number did you get from the inverter you removed?

Thanks CCT!! Wish I woulld have found that page E131735 thats, the part I looked up an it came up for a Compaq. I ordered a 41W1318 not sure if its right or not? Been blowing snow for most of the day and I don't have a clear head now....Don

The E131735 LCD inverter is a YEC model YNV-C01 that was used/usable in a number of computers - see; http://74.125.47.132/search?q=cache:...&ct=clnk&gl=ca

However, one site specifically noted the N100 0689 for that, NOT the 0768.

There is a lot of mis-information out there. I hope the part works for you.

:)

The new link isn't working today but when I read it, it listed 0768- 15.4" screen with no camera as using a 41W1318 inverter card. I think I was lucky and ordered the right one! If the pins and connectors match I am going try it.Thanks again!...Don

That link ( http://www-307.ibm.com/pc/support/si...IGR-68083.html ) is working again - any Techs wanting the references should save it as an mht.

Well I got the part today put in in, no problem, but its not working. I am sure the connectors are OK. I got a monitor to work once again to day,but when I tried to toggle (Fn and F7} back to the LCD, I lost everything.. The screen is just blank and every once in a while if I move the mouse or hit pause, I get a dark red screen. If I can get a monitor to work again I think I will use it as a desktop w/monitor.....Don

That's unfortunate.

You could try replacing the LCD wiring harness - they can fail because of the constant bending opening and closing the lid. That's a relatively cheap part. Anything more probably isn't worth the expense if you have a monitor that will work.

If the cable is the issue, you can flog the inverter on EBay.


gl anyway

Thanks CCT. I think I may try the cable I never give up! If theres a chance I may try it:thumbs2:...Don

CCT could there be something else wrong with this machine? I had it working on a monitor 5 hours this morning and I cleaned up a lot of files and was defrageing it and I lost the monitor I know the F7 and Fn keys are used to toggle back and forth. I went to the video chip properties set it to Monitor. as far as replacing the LCD harness I don't know weather I need a long or short harness. Is there a good site that could tell me how to trouble shoot this laptop or laptops in general? Thanks again. Don

So it has failed again completely?


It could be any number of things.

There are various sites that talk about laptop troubleshooting - you are now in the unenviable position of having to search and read a whole lot.


Internal connections, broken solder joint, overheating vid chip, etc.

The list is long.

For your searches drop the -O4U and look for something like Lenovo 3000 N100 0768 video output troubleshoot - like that.

:thumbs::thumbs:....Don

Could also be the flourecent lamp in there that is bad instead of the inverter. Sometimes they called backlights I think.

Well I got it working good on a monitor now! I removed the presentation director, and set the video properties to monitor. It goes to monitor every time I restart it. I removed about 10 programs and received and installed 28 upgrades. I am going to keep cleaning it up and remove Norton and switch to AVG free. one thing that is bugging me is it goes to a log on screen after 10 minuets and I haven't been able to stop this even after googing it many times.I will continue to try and figure out what part is bad and see if I can fix it,if the cost of the part isn't more that the laptop is worth....Don

I would look at the screen saver settings might see a little check box that says something about require users to press cntrl alt del or on resume display logon or welcome screen clear that check mark and at least one of your issues may clear up. :D

Thanks nunob I have that fixed and I am finished cleaning it up! Got 28 upgrades and the service pack did not install! Not going to worry about the service pack right now....Don

Today I unfastened the LCD screen and got the part no. which is 42T0317, also I checked the cables and they looked great. The LCD screen had a repaired 08/04 tag on it. I am wondering if maybe something is wrong with this machines motherboard.,maybe a crack ,bad resistor or maybe a failed transistor.Does anyone know if the signal that goes to a monitor is the one and same signal that goes to the LCD screen. Also There is a red and white cable that goes to the top of the screen to what I think is a back light this cable comes out of one end of the inverter card. There's no back light in it I think it is missing from when IBM repaired this PC the second time???.....Don

Quote:

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Originally Posted by tracker34

Today I unfastened the LCD screen and got the part no. which is 42T0317, also I checked the cables and they looked great. The LCD screen had a repaired 08/04 tag on it. I am wondering if maybe something is wrong with this machines motherboard.,maybe a crack ,bad resistor or maybe a failed transistor.Does anyone know if the signal that goes to a monitor is the one and same signal that goes to the LCD screen. Also There is a red and white cable that goes to the top of the screen to what I think is a back light this cable comes out of one end of the inverter card. There's no back light in it I think it is missing from when IBM repaired this PC the second time???.....Don

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Sorry I am not familar with the power circuit. I am a bit confused are you saying there is no backlight in your unit because someone forgot to put it in after the last repair? Did the LCD work when you first got it? Does it sometimes display a few colors only very faintly? If so my guess is that the backlight is in there and that it has gone bad. Maybe you can find a whole new LCD and case for that make and model on ebay??? I have purchased them before and just swapped out the screens in them because the flourecent lamps are delicate and kind of a pain to replace for a big oaf like me :P

This was my wifes PC, she doesent remember any light.
There is no back light bulb it it. (neon tube??) I can't find a back light in the parts list or digram. Just 2 empty brackets at the top of the LCD. So I guess that it doesn't need one??? ...Don

I think sometimes they are called the flourecent lamp and they are usually a part of the backlighting for the lcd screen and a part of the inverter circuit.

Right nunob two wires one red, one white come out off the right end of the inverter board and go to the brackets on the top side of the screen. I found a brand new screen on Ebay for $64 delivered so I am waiting for it to arrive and I will see if that gives me a screen....Don

Sweet news Don!!! I hope the new screen resolves your issue I suspect it will. And if not you can take it apart and see if the backlight or flourecent lamp is missing then order up a new one. :D Time to add laptop repair to your resume :)

Thanks for the encouragement but in installed the screen this morning and it isn't working. I will check the cable connections tomorrow and let you know if I give up or not,,,,,,Don

Some further info for you:

http://www.laptopz.com/ibm-lenovo-30...a-p-12352.html

http://blog.laptopz.com/2009/12/01/l...acement-guide/

I googled Lenovo 3000 n100 back light and found this link also. What I don't understand why wasn’t it installed when IBM repaired it ???? I did see a very dim screen image a few times when I tried it before going to the monitor. Aso I can’t find any thing on how to install a back light or any part number.http://www.buy.com/prod/new-15-4-inc...212931157.html Repaceing the LCD wasen't easy I may be gunshy of a neon tube backlight. I wish I was getting paid by the hour for reseaching and trying to repair this machine. I could buy a dozen new ones by now! I really appericate the people that are helping me :thumbs::thumbs:..Don