compaq SLT PSU dead.

From: jpero_at_sympatico.ca <(jpero_at_sympatico.ca)>
Date: Sun Jun 18 21:21:15 2000

Compaq SLT PSU dead. Power DC plug is DEATACHABLE from power
brick, model number: 2687. Other SLT PSU bricks aren't
deatachable. No signs of power and fuse not blown.

Uses compaq's relabeled common UC3842 pinout PWM ic, yes I traced
enough from the UC3842 datasheet. Single chopper tranny is MOSFET
(BUK456-800A by philips). R512 and R500 are now ashes. I need the
resistor values on these.

What good subs for this MOSFET? And any gotchas?
I have looked up on this specs on this transistor but I'm not so
sure and *very* diffcult to buy that correct part so I need to sub
this transistor out from bunch of choices that has 1-MOSFET PSUs
with different types of 8pin UCxxxx PWM on it.

Everything else are fine.

Cheers.

Trying to get SLT 286 going because other bunch of SLT 286 and SLT
386s/20 was given away with own working bricks. Those working
bricks was not correct model like this kind I have in pieces and this
is remaining SLT 286 I want to keep.

Wizard
Received on Sun Jun 18 2000 - 21:21:15 BST