08-27-2012 08:25 AM
Hey, folks. Thanks in advance for assistance.
I searched and found similar threads, including one that explained how to clear out any lingering charge to fix the issues. But none of the other posts reflected exactly my issue.
I have an X41 tablet that worked great, but hasn't been touched in about 2 years. I tried to start it, but when I plug in the AC adaptor, the X41 does nothing. The charging light does NOT come on. I've tried with and without several batteries (I have extras). I've also verififed that the brick itself does charge other devices, and even used another brick on the X41, but same issue.
I hope to figure out what is wrong without spending too much, so I can decide whether its worth fixing. Any suggestions on how I might further diagnose it, or should I resign myself to paying for a service fee?
08-27-2012 12:25 PM
At first I would've suggested the CMOS battery is dead but we have x41's and have disconnected the CMOS battery in the past to clear gremlins and noticed the boxes still charge and even power up without the CMOS battery.
Have you tried disconnecting the CMOS battery (maybe dead anyway) and trying to recharge / restart the x41 with it disconnected ?
Whenever we do, all BIOS settings reset to defaults, the TPM retains its data along with the enrolled fingerprints but it is similar to an F10 / Reset to Defaults and Save.
08-27-2012 04:41 PM
The type of behaviour that you're describing leads me to believe that there's a blown fuse in the charging circuit.
If you're up for opening up the machine and going over these with a multimeter, it should be fairly easy to find the culprit, presuming I'm right which may or may not be the case.
If it's indeed a blown fuse, a new one can be soldered over it, "piggy-back" style.
08-28-2012 05:28 AM
Thanks for both of the responses.
I went ahead and changed the CMOS battery, but no luck.
As for the fuse- that's a little beyond my ability. So, I'm going to take it to the shop and hope its something simple, like a fuse, and not a bad systemboard.
08-29-2012 02:19 PM
Some good suggestions here so far...and it sounds like you've done your homework.
Probably it will wind up being the system board as George suggests, but one other thing you might check out is the power connector. Most ThinkPads have a DC power in jack with a short pigtail connection to the system board. It is possible that the connector is broken and could be replaced...
Have you tried gently wiggling the DC input plug a bit to see if the lights flicker?