X20 - boots only without battery, problems

[zaqrack]

Hi!

I have the following issues (which showed up after a plane flight, could the scanner at the airport be the reason for this?)

-booting with battery only never works.
-booting with battery AND AC only works sometimes. If it boots, thinklight, num lock, caps lock, battery and suspend leds are lighting.
-booting without battery, ONLY AC is always OK. When hotswapping the battery later, and it runs from battery OK, without battery status of course.
-no sound at all
-recognises USB devices but some have issues when AC power is connected.

I tried removing the battery and CMOS batt., pressing power button a couple of times, but no imporvements.
I suppose its the motherboard. Do i need to replace it, or is it perhaps a fixable part broken?

If its the MB, I'm looking for an X20/X21 battery with shipping to Hungary

Thank you for your answers.
Peter

[ryengineer]

You might consider opening up your thinkpad, cleaning things up putting it back and booting up with a new IBM battery.

You'll need to consult HMM though:

Hardware Maintenance Manual- ThinkPad X20

[GomJabbar]

I had the same symptoms with a ThinkPad 600E I had just bought it used from a local used computer store. Turned out the charging circuit was bad. They tried a different battery and it ruined it. Fortunately they had another 600E they swapped it out for.

Looks like your motherboard is bad.

[zaqrack]

thanks for the replies. So it might be the battery or the charging circuit gone bad. The sound being fixed from a cleaning also supports this statement

I'm trying now to measure battery charging time, looks like its charging correctly. No battery info is available though, it says unknown amount remaining.
I would like to make sure its the battery or the charging circuit before I'm going to buy anything. Unfortunately I have no possiblity to try it with another battery, but I'm trying to find one.