Ibm T-40 No Video Display ... Hello, Hoping for alittle help with a t-40 IBM. You can here it power on lights OK but no video. Not even alittle bit. I plugged ...

dosboot · 02-02-2007, 12:36 PM

Hello, Hoping for alittle help with a t-40 IBM. You can here it power on lights OK but no video. Not even alittle bit. I plugged it into an external but still nothing. Not a backlight issue or inverter, the LCD works fine. I hear it power up and the hard drive truns on just no video display. Any support would be appreciated.

baso · 02-14-2007, 11:32 AM

I have the exactly same problem on same model T40, actually i can get video on it after many power on tries but it gets blank in some minutes, tested with other memory , same problem, took out hdd/sound card/dvd same problem. reseated lcd cable on back of lcd and motherboard same problem. reseated inverter cables. same problem.

Any suggestions?

dosboot · 02-14-2007, 05:38 PM

No one else seems to know. I am guessing that it is the BGA Video Chip because Caps, Resistors, Diodes have to do with bringing power to specific components. I have purchased some crap boards off ebay and was planning on trying to extract the video chip using a pencil torch, if it seems easy enough I would try and do it with this board. I would just like to get this thing up and running cause the resell value is excellent on this laptop.

Looking at your post, funny but I have another T-40 I am working on, same problem as yours. It is working one minute and I lose video the next. I am not moving the machine when I experience this problem, nor am I punching keys. The lights stay on but nothing on video. I have not tried to plug it into an external while this problem is happening but next opportunity I will try. If I get nothing on the external, even after the function F7 key is pressed I will have to assume it is an intermittent problem and will consider heating up the board to reflow some of the solder welds. What do I have to loose at this point.
Oh also when the screen goes dead I turn the system off and right back on and all is good almost like it did not even happen. Really strange.

baso · 02-15-2007, 02:26 AM

i tried with a external screen, i couldnt get it with fn+f7, if you have any solution, please share with me.

Even i changed in bios to VGA external, then when i turn on computer it is on external , video comes on but after some minutes it goes off just as in internal.

02-02-2007, 12:36 PM	#1
dosboot Registered User Join Date: Feb 2007 Posts: 5 Credits: -338	Ibm T-40 No Video Display Hello, Hoping for alittle help with a t-40 IBM. You can here it power on lights OK but no video. Not even alittle bit. I plugged it into an external but still nothing. Not a backlight issue or inverter, the LCD works fine. I hear it power up and the hard drive truns on just no video display. Any support would be appreciated.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Video Display	mmgirgis	Notebook Forums - General	4	03-20-2006 09:16 AM
Video Display	mmgirgis	Notebook Forums - General	0	03-20-2006 04:55 AM
Regarding video display, in general...	BadBoy787512	Notebook Forums - General	5	08-24-2005 09:46 AM
Video display problems	Dedaus	Dell Home (Inspiron, XPS, Studio)	4	04-22-2005 12:36 PM
Video display issue	ohenry5	Dell Notebooks - General	3	11-25-2004 05:55 AM

Notebooks For Sale

User Links

Top Posters

Todays Top Posters

Fastest Benchmarks

Latest Benchmarks

02-14-2007, 11:32 AM	#2
baso Registered User Join Date: Jun 2006 Posts: 2 Credits: -350	I have the exactly same problem on same model T40, actually i can get video on it after many power on tries but it gets blank in some minutes, tested with other memory , same problem, took out hdd/sound card/dvd same problem. reseated lcd cable on back of lcd and motherboard same problem. reseated inverter cables. same problem. Any suggestions?

02-14-2007, 05:38 PM	#3
dosboot Registered User Join Date: Feb 2007 Posts: 5 Credits: -338	No one else seems to know. I am guessing that it is the BGA Video Chip because Caps, Resistors, Diodes have to do with bringing power to specific components. I have purchased some crap boards off ebay and was planning on trying to extract the video chip using a pencil torch, if it seems easy enough I would try and do it with this board. I would just like to get this thing up and running cause the resell value is excellent on this laptop. Looking at your post, funny but I have another T-40 I am working on, same problem as yours. It is working one minute and I lose video the next. I am not moving the machine when I experience this problem, nor am I punching keys. The lights stay on but nothing on video. I have not tried to plug it into an external while this problem is happening but next opportunity I will try. If I get nothing on the external, even after the function F7 key is pressed I will have to assume it is an intermittent problem and will consider heating up the board to reflow some of the solder welds. What do I have to loose at this point. Oh also when the screen goes dead I turn the system off and right back on and all is good almost like it did not even happen. Really strange.

02-15-2007, 02:26 AM	#4
baso Registered User Join Date: Jun 2006 Posts: 2 Credits: -350	i tried with a external screen, i couldnt get it with fn+f7, if you have any solution, please share with me. Even i changed in bios to VGA external, then when i turn on computer it is on external , video comes on but after some minutes it goes off just as in internal.