Hello!
i have received t23 for repairing... first it looks like loosen coils, after resoldering all
of them its became acting strange. i'm using external power supply with digital current
meter, after connecting mobo to power it draws _spikes_ of high current (4A) with frequency
about 20-30hz, also hearing clicking sounds from coils, and mosfet on the corner of B6 (pic below) warming.
tried to change few mosfets around, also MAXIM PWM controller (C5-D5) on this http://www.rkawakami.net/ibm_t2x/mobo_top_72_legend.jpg
- doesn't help.
some suggestions? thanks!
T23 won't power on - clicking sound, high current cunsumtion
-
RealBlackStuff
- Admin
- Posts: 17508
- Joined: Mon Sep 18, 2006 5:17 am
- Location: Mt. Cobb, PA USA
- Contact:
Re: T23 won't power on - clicking sound, high current cunsumtion
Use a proper IBM AC adapter with 16 Volt, 72 Watt, 4.5 Amp.
Lovely day for a Guinness! (The Real Black Stuff)
Check out The Boardroom for Parts, Mods and Other Services.
Check out The Boardroom for Parts, Mods and Other Services.
Re: T23 won't power on - clicking sound, high current cunsumtion
Really man, sure i tried it. My p.supply just better because it shows current, so i can see whats happening.
-
RealBlackStuff
- Admin
- Posts: 17508
- Joined: Mon Sep 18, 2006 5:17 am
- Location: Mt. Cobb, PA USA
- Contact:
Re: T23 won't power on - clicking sound, high current cunsumtion
On that photo, there's a rectangular coil missing in A1-A2.
And there's one at C5-C6.
Did you resolder those as well?
I have fixed many T23s but never heard the clicking you describe.
And there's one at C5-C6.
Did you resolder those as well?
I have fixed many T23s but never heard the clicking you describe.
Lovely day for a Guinness! (The Real Black Stuff)
Check out The Boardroom for Parts, Mods and Other Services.
Check out The Boardroom for Parts, Mods and Other Services.
-
- Similar Topics
- Replies
- Views
- Last post
-
-
My current Thinkpad collection (Large Pic sizes)
by Whitieiii » Wed Jan 25, 2017 7:26 pm » in Pictures of your ThinkPad & desk setup - 12 Replies
- 1453 Views
-
Last post by Whitieiii
Thu Feb 16, 2017 7:48 pm
-
-
-
T410i won't boot (no beep, power LED on, LCD blank) (2518F5U)
by scootley » Mon Jan 09, 2017 10:55 pm » in ThinkPad T400/410/420 and T500/510/520 Series - 11 Replies
- 1160 Views
-
Last post by RealBlackStuff
Thu Jan 12, 2017 2:19 pm
-
-
-
High efficiency GRAPHENE assisted cooling
by PurpleMelbourne » Thu Apr 06, 2017 11:09 pm » in ThinkPad T6x Series - 17 Replies
- 1454 Views
-
Last post by PurpleMelbourne
Fri May 05, 2017 2:07 am
-
-
-
Finding a high resolution T61 with intel graphics?
by nigratruo » Wed May 03, 2017 7:30 pm » in ThinkPad T6x Series - 12 Replies
- 936 Views
-
Last post by Raidriar
Tue May 30, 2017 9:23 am
-
Who is online
Users browsing this forum: No registered users and 5 guests



