Upgraded Xga to Sxga+ having issues

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pbkev20 · #1 Post by **pbkev20** » Tue Jul 18, 2006 4:23 pm

Ok I purchases a LCD PART NO. SAMSUNG LTN141P4- L01 SXGA+ and the correct lcd cable from ibm (cant think of the part number right now). I have a t40 2373-72u.

When i plug the new sxga lcd in and boot up I get a series of lights blinking on and off, no image and what soulds like its rebooting every 5-10 seconds(cant tell since no image is on the screen). When I unplug the lcd cable and use an external monitor it works fine. Anyone know what I can do, or whats causing this?
Thanks so much in advance.

EOMtp · #2 Post by **EOMtp** » Tue Jul 18, 2006 5:30 pm

I suspect the LCD cable you have is not compatible with that LCD panel. I know it's a lot of trouble to try the following -- especially if you have the top reassembled -- but if you can leave the LCD cable connected to the motherboard and disconnect it from the LCD panel, then you will know if the problem is the cable or something else. If not the cable, then it's a mismatch with the panel. My guess is that the panel does not go with that cable.

pbkev20 · #3 Post by **pbkev20** » Tue Jul 18, 2006 9:08 pm

currently I have the cable connected to the motherboard but not into the lcd with the external monitor working. Once i plug the lcd in it doesnt work. Is it possible to maybe plug the cable in once i have the computer on? I wouldnt think so but may as well ask.

EOMtp · #4 Post by **EOMtp** » Tue Jul 18, 2006 10:11 pm

Do NOT plug in any cables (except USB) once the computer is on -- especially internal connectors. What you suggest will not work in any case. You have either a bad LCD panel (electrical short, etc.) or an pinout incompatibility between the LCD panel connector and the LCD cable.

Given that you know that you have the correct cable and that it is good, the only conclusion is that the LCD panel is the culprit.

cmarti · #5 Post by **cmarti** » Wed Jul 19, 2006 7:17 am

pbkev20 wrote:currently I have the cable connected to the motherboard but not into the lcd with the external monitor working. Once i plug the lcd in it doesnt work. Is it possible to maybe plug the cable in once i have the computer on? I wouldnt think so but may as well ask.

If you got the lcd and tha cable from IBM demand them to be replaced.

The SXGA cable is 91P6787 and the LCD is 92P6760

Good luck!

pbkev20 · #6 Post by **pbkev20** » Wed Jul 19, 2006 8:54 am

I did get the cable from IBM and might end up asking them to replace it but right now im contacting the person i purchased the lcd from to see if he will replace it.

pbkev20 · #7 Post by **pbkev20** » Wed Aug 02, 2006 5:25 pm

Is there a difference between SXGA and SXGA+??

will the + work on a t40 that originally had a xga on it?

_erazor_ · #8 Post by **_erazor_** » Wed Aug 02, 2006 6:10 pm

sxga is 1280x1024 and there do not exist any thinkpads with that resolution.

there is only xga which is 1024x786 and sxga+ which is 1400x1050

(I'll leave UXGA and the widescreen resolutions out for now)

edit: I forgot the plus myself now, but it`s edited in finally.

djpharoah · #9 Post by **djpharoah** » Wed Aug 02, 2006 9:14 pm

_erazor_ wrote: there is only xga which is 1024x786 and sxga which is 1400x1050

SXGA+ = 1400x1050

_erazor_ · #10 Post by **_erazor_** » Thu Aug 03, 2006 4:46 am

yer now I did the typo myself

I just forgot the +, but when reading my comment then it becomes obvious what I mean (look at first sentence)

pbkev20 · #11 Post by **pbkev20** » Thu Aug 03, 2006 8:08 am

will the system still power on with a bad inverter? what are the symptoms of a bad inverter?

Upgraded Xga to Sxga+ having issues

Upgraded Xga to Sxga+ having issues

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