T30 wont power on

[baltazar3]

It just show IBM logo from a moment and turn off.I was changed CPU,RAM,battery...reset BIOS but still the same.On external LCD work fine ???

[RealBlackStuff]

That's a common problem with T30, corrupt videoRAM, where external monitor works but not internal LCD.
Learn to live with it or replace the motherboard.

[ozzymud]

I tried looking up more info on this "common problem", can't seem to find references...

but i did find a post here where someone had the same thing, worked only from an external...

http://forum.thinkpads.com/viewtopic.ph ... 02#p383702

Around LCD plug in mobo are couple of fuses (blue or glass).Check it.In my mobo was one broken.The symptoms was,that TP wasn't started to IBM logo.Turn off itself when boot.On external display worked good.
Maybe it helps somebody

That whole thread was a good read as well. Several people talk about bad Hitachi LCD's being the issue. Others talk of bad GPU connections (apparently there are 2 seperate video lines coming out, one for the lcd and one for the external)

@RBS: Can you provide some links where the common problem you mentioned is talked about? I plan to add a T30 to my collection eventually and want to document all I can

[RealBlackStuff]

It may not necessarily be called bad videoRAM, but bad GPU, "LCD not working but external monitor does work" and things like that.
Happy reading:
http://forum.thinkpads.com/viewtopic.php?f=28&t=54715
http://forum.thinkpads.com/viewtopic.php?f=28&t=80427
http://forum.thinkpads.com/viewtopic.php?f=28&t=47613
http://forum.thinkpads.com/viewtopic.php?f=28&t=91781

I've completely given up on them, too bulky/heavy and only USB1.1
My current road companion is an X60s, which gives me over 9 hours on a (new) 8-cell battery.