Repairing the electric cable which
comes from the black coloured electric transformer of a
Pismo (G3 powerbook... same for the Lombard model)
As usual, I cannot be responsible for any damage to
your machines when you will experiment the following
When the transformer arrives to the Sterpin Repairing
Center, it does not work anymore (the transformer... not the
low-paid handyman which repares all these machines ;-)...
Note Of the Translator).
When I tested it, I discovered a tear in the cable's
Not so good: if an external tear, surely an internal
-> we open the transformer by unhooking the covers
with a lever. I do not believe in using an heat gun or
something similar: the covers may be damaged.
The two power cables: the yellow arrow points to the
ground cable covered by a thermally retractable girdle.
We test the circuit in-between the power output and the
Unfortunately, this a jack plug and both the two contacts to
be tested are in the very bottom of this plug :-(
-> here I want to thank Christine (ctrl) of the
list which sends me a operationnal power connector.
I test it: "beep"... null resistance... okay :-).
I do not change on the iBook side, but I mesure the
ground cable now: still "beep" :-( ->short-circuit.
-> I unweld the cable and test the power unit without
the cable and the connector. 24 Volts, it's okay.
So the problem is within the cable: I have to cut off the
defective area, make the cable shorter and put it back in
Pewting the contacts (yellow arrows), cleaning the ground
cable, insert a thermally retractable girdle (blue arrow) on
on the main cable and another girdle (white arrow) on the
All back in place... I'm not proud at all of the right
weld spot ;-).
Test before final assembly.
-> a tip to avoid this damage: before encircle the
cable around the transformer, just create a small loop as in
And this tip is valid for any kind of electric