T21 screen and battery issues

[dementedlemur]

I just got a T21 the other day and most of the time the screen has a very red/pink tint to it. It looks normal on an external monitor, so could this be an LCD or LCD inverter issue?
Also the battery doesn't show as charging, but the unit will operate on AC Power once it has been turned on with the battery, and the battery is removed. If the battery is left in it, it beeps like it will shut down. I've used 3 different AC adapters and it doesn't make a difference. Could this be a problem with the battery or the mobo?

[kjarrett]

Sounds to me like LCD is having issues and the battery is shot.

The former is expensive to replace but the latter is not. Batteries are all over ebay.

Good luck, I loved my T21, just sold it this past summer. Wonderful system.

-kj-

[beeblebrox]

The pink stuff on the LCD is the aging problem of the display backlight, which is a cold cathode tube. The phosporious material degrades after some time, and the red spectrum starts to dominate, while the blue fades.
When new, it produces white light.

That thing is about 3mm thick and 20cm long, and you can get it on eBay, or just google around. Costs about $10-20. But you need some skills to replace it on the bottom of the display.

The battery is dead, it seems that a pair of the Li-Ion cells has a short.
If you check the cycles (Battery maximizer) and there are not too many, you can open the battery, replace the cell (Panasonic CR18650) by pair and see whether the built-in battery chip does accept it. With too many cycles (200-400) it will deny operation because it thinks, the battery is terminated. Replacement is quite easy, but opening the plastic cover is tricky.

Be very careful with the Li-Ion batteries, they are extremely dangerous when overheated (do not solder on them) or damaged. Usually, when damaged, they just behave like Arnold's ruptured battery in Terminator 3. (No kidding!)

[dementedlemur]

The battery worked when I first got the laptop (Wednesday, Nov 10) and held about a 2 hour charge, but plugged in the laptop would never charge the battery. Sure the battery is the problem?

[CUZN J]

I to have a similar problem, the battery wont charge while in the T21, will charge on external charger, but the pc does not reconize the ac-adapter, it did at one time with a powercord in the taskbar, now all it shows is the battery, even when it it on a/c, my battery will last over 2hours on a charge, been able to watch dvd movies all the way through, I can't upgrade the bios because the pc doesnot reconize the adapter , I think I may have same problem with battery switching on the mobo, but my lcd is great, so they are seperate problems.
Anyone know why it won't pick up the a/c adapter like before.. thanks Cuzn J