T22 Will Not Power On After Being Plugged-in For Too Long

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wswartzendruber · #1 Post by **wswartzendruber** » Fri Apr 15, 2005 10:45 am

After I got my T22, the battery pack lasted for just over a year. Then I replaced it with a non-authentic model that would up leaking acid several months after purchase. So I am currently using my system without a battery pack.

When I'm using it, everything's fine. But if I turn it off and leave it plugged-in for a while, it won't power back on. All I get is a quick, one-time blink from the battery and HDD indicator lights when I press the power button. The same thing also happens when I plug it in (the indicator light behavior). If I leave the system alone (not plugged-in) for a few hours, then it'll power on just fine. Also, the system has suddenly switched-off when in standby.

Any advice? I'm thinking it's some sort of built-in protection system.

#2 Post by **K. Eng** » Fri Apr 15, 2005 1:46 pm

I'd first try another AC adapter to make sure that isn't what is causing the problem.

AbsoluteRaleigh · #3 Post by **AbsoluteRaleigh** » Wed Apr 20, 2005 9:40 am

wswartzendruber wrote:After I got my T22, the battery pack lasted for just over a year. Then I replaced it with a non-authentic model that would up leaking acid several months after purchase. So I am currently using my system without a battery pack.

When I'm using it, everything's fine. But if I turn it off and leave it plugged-in for a while, it won't power back on. All I get is a quick, one-time blink from the battery and HDD indicator lights when I press the power button. The same thing also happens when I plug it in (the indicator light behavior). If I leave the system alone (not plugged-in) for a few hours, then it'll power on just fine. Also, the system has suddenly switched-off when in standby.

Any advice? I'm thinking it's some sort of built-in protection system.

That system should not be run without a battery- nor with a generic battery.

I'd start there..

wswartzendruber · #4 Post by **wswartzendruber** » Wed May 11, 2005 7:54 pm

Okay, I just got an authentic IBM battery, but the system still won't come on. I've tried holding down the power button for ninety seconds (as IBM has recommended), but that doesn't cut it. Sometimes pressing it ten times then holding it does work, but more often than not it doesn't.

So my understanding is that this is a problem with a capacitor becoming overcharged. I put the system in the fridge for a few hours and it did nothing. Now I've put it in until morning. I've removed the HDD, network mini-PCI card, battery pack, CMOS battery, DVD-ROM drive, and RAM.

Are there any other solutions? This system was working fine until recently. I'm not very optimistic that chilling it will drain the capacitor and keep it from becoming overcharged.

vliou · #5 Post by **vliou** » Wed May 11, 2005 10:08 pm

Could it be a faulty power switch...(sometimes it makes contact, sometimes it does not)?

wswartzendruber · #6 Post by **wswartzendruber** » Thu May 12, 2005 12:26 am

The power button is most certainly making contact. I know this because I consistently get the disappointing HDD light blink every time I press it.

Where on the mother board is this capacitor? I have half the mind to replace it.

wswartzendruber · #7 Post by **wswartzendruber** » Fri May 13, 2005 10:13 pm

Okay, I've got this motherboard in my hands (and it was a pain to get to). Where's this capacitor?

darksugar · #8 Post by **darksugar** » Sat May 14, 2005 5:49 am

I would start by viewing the HMM on the product before playing hide and seek with that motherboard....

wswartzendruber · #9 Post by **wswartzendruber** » Sun May 15, 2005 11:47 pm

The HMM tells me to replace the system board.

T22 Will Not Power On After Being Plugged-in For Too Long

T22 Will Not Power On After Being Plugged-in For Too Long

Re: T22 Will Not Power On After Being Plugged-in For Too Lon

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