Some time ago, I got a DEC Highnote Ultra II laptop missing the PSU
and IDE bay. I was attempting to fire it up tonight with an alternate
PSU and "fire" was the operative word.
It seems that there is an internal PSU slightly larger than a standard 9V
battery... inside this mini-PSU (a DC-DC converter, really) were/are some
100uF *10V* SMT caps. (if that's what the 100-10 marking means). These
are 1mm x 2mm, gray with a white band on one end and the legend on the
PCB says C1, C2, etc., not D1, D2, etc. Well... they must have been
counting on the tolerance of the caps being +/- 10% and the PSU not being
*over* 11VDC (It's marked "11VDC _at_ 2.7A"). I thought that 12VDC would be
safe. It was not. I'm guessing that my "12VDC" was slightly higher than
that due to the light load that the laptop placed on it.
So... one exploded SMT cap later (now replaced), I'm in search of a
"real" PSU. It has a connector I'm used to seeing on Dell laptops,
kind of a five-sided shape with three pins. The pin in the peak
seems to be the ground, the two pins in the base corners seem to be
the positive supply.
This sound familiar to anyone?
Thanks,
-ethan
__________________________________________________
Do you Yahoo!?
Faith Hill - Exclusive Performances, Videos & More
http://faith.yahoo.com
Received on Wed Oct 16 2002 - 22:30:00 BST