Take a look at our
ThinkPads.com HOME PAGE
For those who might want to contribute to the blog, start here: Editors Alley Topic
Then contact Bill with a Private Message
ThinkPads.com HOME PAGE
For those who might want to contribute to the blog, start here: Editors Alley Topic
Then contact Bill with a Private Message
Thinkpad 380XD oddball charging behavior
Thinkpad 380XD oddball charging behavior
This issue had been manifesting where I would insert the main Li-ion battery pack and the charging system would kick in, but emit a faint high pitch whine for a few seconds then stop, only to seemingly 'retry', and sometimes there would be an outright buzzing sound from the system when I start the 380XD. Within windows, the battery pack is considered to be charging, but is stuck at 80% and the system dies whenever the AC cord is pulled. I thought at first the battery pack was bad, but after purchasing a new pack, the system still refuses to run on battery power. Does this have to do with the motherboard? Or the powerbrick?
-
- Senior ThinkPadder
- Posts: 3831
- Joined: Mon May 28, 2012 5:49 am
- Location: Metro Manila, Philippines
Re: Thinkpad 380XD oddball charging behavior
High pitched whine --> Coil noise, perhaps?
It's probably the power/charging circuit. I don't know if it's integrated to the system board, or a separate daughter board, as I've yet to own or dismantle a 380 series Thinkpad.
It's probably the power/charging circuit. I don't know if it's integrated to the system board, or a separate daughter board, as I've yet to own or dismantle a 380 series Thinkpad.
Planned Purchase: T480s i5-8350 FHD Touch
Impulse Buy: Thinkpad not named for safety reasons
RIP: X220 4291-C91 X61 7676-A24 760XD-U9E
Impulse Buy: Thinkpad not named for safety reasons
RIP: X220 4291-C91 X61 7676-A24 760XD-U9E
Re: Thinkpad 380XD oddball charging behavior
Looks like the 380XD has a DC/DC daughter card, from what the Service manual states. I did record sound of the system making the noise while attempting to charge the battery.axur-delmeria wrote: ↑Tue Aug 22, 2017 2:51 amHigh pitched whine --> Coil noise, perhaps?
It's probably the power/charging circuit. I don't know if it's integrated to the system board, or a separate daughter board, as I've yet to own or dismantle a 380 series Thinkpad.
-
- Sophomore Member
- Posts: 130
- Joined: Thu Mar 20, 2014 8:55 pm
- Location: Albany, NY
Re: Thinkpad 380XD oddball charging behavior
I think if the battery is bad/defective (shorted out, bad cell, etc.) it will likely damage the charging circuit on these machines (I have a 380ED with a similar issue, I usually leave the battery out or put tape over the terminals since I don't really use it with battery anymore)
Current: T440p (Win10), W500 4058-CTO (Win10), T61 8892-01U (Win2000), Semi-Retired: T61 8892-01U (Win10)
Museum/Retired: T400, Z60m, T43, T42, T30, T23, A30, A31p, 600X, 600E, 380ED, 770Z, 560Z, 765D, 755CX, 755CD
Others: Dell D630, MacBook Pro Mid-2012, PowerBook G3 Pismo, AlBook 15"/1.5G
Museum/Retired: T400, Z60m, T43, T42, T30, T23, A30, A31p, 600X, 600E, 380ED, 770Z, 560Z, 765D, 755CX, 755CD
Others: Dell D630, MacBook Pro Mid-2012, PowerBook G3 Pismo, AlBook 15"/1.5G
Re: Thinkpad 380XD oddball charging behavior
That makes sense, since Clint (Lazy Game Reviews) just uploaded a video of his 380XD restoration and he mentioned the strange whining sound from the battery area. So I could probably salvage a non functioning 380 series DC/DC daughter board and see if replacing it would solve the problem, if not, could be a separate circuit that could be replaced by other parts.danikayser84 wrote: ↑Sun Aug 27, 2017 2:54 pmI think if the battery is bad/defective (shorted out, bad cell, etc.) it will likely damage the charging circuit on these machines (I have a 380ED with a similar issue, I usually leave the battery out or put tape over the terminals since I don't really use it with battery anymore)
-
- Similar Topics
- Replies
- Views
- Last post
-
-
Thinkpad 755 HDD reformat/factory reset
by getarest2000 » Wed Oct 18, 2023 8:30 pm » in Off-Topic Stuff - 6 Replies
- 4000 Views
-
Last post by Edward Mendelson
Fri Oct 20, 2023 9:16 am
-
-
-
Thinkpad T400 Audio issues
by Flameboi420 » Thu Oct 19, 2023 12:59 am » in ThinkPad T400/T410/T420 and T500/T510/T520 Series - 3 Replies
- 2356 Views
-
Last post by RealBlackStuff
Thu Nov 02, 2023 7:10 am
-
-
-
Thinkpad T490 not powering on
by omonim88 » Mon Oct 23, 2023 5:12 am » in ThinkPad T430-T490 / T530-T590 Series - 2 Replies
- 2421 Views
-
Last post by keithsketchley
Mon Feb 26, 2024 10:17 am
-
-
-
FS: ThinkPad T440p
by PiZzA EnGiNeEr » Tue Oct 31, 2023 3:43 pm » in Marketplace - Forum Members only - 2 Replies
- 1888 Views
-
Last post by PiZzA EnGiNeEr
Sat Nov 04, 2023 2:52 pm
-
Who is online
Users browsing this forum: No registered users and 19 guests