Remove the battery. Press the on button 10 times. Then press it and hold it
for 30 seconds
Plug in the brick and see if it works.
----- Original Message -----
From: "Fred J. Tydeman" <[email protected]>
To: <[email protected]>
Sent: Friday, December 10, 2010 1:31 PM
Subject: [Thinkpad] Power problems
I have a Lenovo ThinkPad W500.
My wife borrowed it. When I got it back, it was dead.
With the battery installed and the AC power plugged in,
no lights lite up. Pressing the On button got nothing.
I measured the voltage at the tip of the 20V plug from
the power brick. I got nothing. So, I got a new power
brick via warranty (it is 2 years old). I plug it in
and still no lights lite up. I removed the battery and
tried just the AC power. Now I get the AC light to lite.
I then tried the old power brick and again the AC light
lites. I reinstalled the battery and now both AC and
battery lights lite. I am letting the battery charge
for a hour or two before I try to turn it on.
I do not understand why my voltmeter got 0 volts from
the power brick, yet it now works in the computer.
I do not understand why removing and reinstalling the
battery now lets the system appear to be OK.
---
Fred J. Tydeman Tydeman Consulting
[email protected] Testing, numerics, programming
+1 (775) 358-9748 Vice-chair of PL22.11 (ANSI "C")
Sample C99+FPCE tests: http://www.tybor.com
Savers sleep well, investors eat well, spenders work forever.
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