From: Mike Lingenfelter (mwl_at_tuckahoe.blwd.k12.pa.us)
Date: Wed Aug 07 2002 - 14:33:41 EDT
It has been my experience that #5 is the most likely outcome with #7
following close.
mwl
-----Original Message-----
From: Bill Morrow [mailto:penzance_at_gate.net]
Sent: Wednesday, August 07, 2002 2:25 PM
To: Felix E. Klee; thinkpad_at_cs.utk.edu
Subject: Re: Power adapter makes annoying sound
third party adapters are available, but are universal types, thus not as
good as the original..
ibm does not make these, but buys them from others under huge contracts..
if you slam yours against a cement floor it will probably rearrange the guts
(i.e. tiny coils and capacitors, etc) of this switching power supply and
yeild one or more of the following results:
1. stop the oscillating..
2. break the plastic case..
3. intenisify the oscillations..
4. add TO the oscillations..
5 completely destroy the entire ac adapter..
6. make an ac adapter shaped divot in a poor quality cement floor..
7. relieve you of some frustrations and replace these with NEW
frustrations..
:-)
they are under warranty if you choose not to try the "slamming" fix..
which variety is it..
the 19VDC or the 16VDC version..?
<------------------------------->
Cordially, :-)
Bill Morrow
WEB page http://thinkpads.com
thinkpads.com Open Forum
http://www.afaonline.com:8080/webboard/$webb.exe/~2/login?
or go to thinkpads.com and link from there
E-Mail: bill at thinkpads dot com
----- Original Message -----
From: "Felix E. Klee" <felix.klee_at_inka.de>
To: <thinkpad_at_cs.utk.edu>
Sent: Wednesday, August 07, 2002 1:54 PM
Subject: Power adapter makes annoying sound
> Hi,
>
> I just replaced the power adapter of my iSeries 1200 Thinkpad because it
had a
> loose connection. Now, albeit the new power adapter (02K67549) works fine,
it
> emits a very high frequency (maybe ~18KHz) sound (in addition to a low
> frequency sound) that is very annoying. Is there any way to fix this
problem
> or do I have to buy yet another adapter?
>
> IBM seems to have real problems with the qualitity of these adapters. Are
> there any third party adapters available?
>
> Felix
>
>
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