On Oct 31, 6:41*pm, Jamie
t wrote:
Robert Macy wrote:
The power supply that goes to the IBM ThinkPad T22 got wet!

arcing sounds, zsst! does not work now. Internally found a blown
pigtail fuse. *plus, [and this does NOT bode well] blackened PCB areas
around AC mains traces.

The pigtail fuse does not appear to be simple physical caps going over
the 8AG type but solidly attached to the metal end caps. *Plus, and
this ALWAYS happens, the value is UNDER the fuse body and is not
accessible. *I'd like to simply put asimilarly rated fuse in parallel
to check if the problem is only the fuse, but don't know the amperage.

Anybody know the rating? * *The main unit is in the range of 16V 3.36A
so the fuse could be 1 to 2A, but the wire laying down inside looks
heavier. *Maybe the fuse is in series with the output ? and is more
like 5 to 10A ??

Anybody have a manual, or URL to find out?

Attach a 55 watt incandescent lamp across the open fuse and use that as
the test fuse.

* *And if you don't understand how that would work for you, you shouldn't
be doing none of this, at all.

* Jamie

Forgot about using a lamp as a fuse replacement to limit the current.
Or heater for higher current

Didn't know they made 55W bulbs, found 60W and 40W and one that
switches 50-100-150, but no 55W

Hmmm....that's about 260 ohm HOT, when cold more like 26 ohms. so the
current will go somewhere between 5A down to 0.5A

still safer than putting in a 'penny'