Re: Power supply

[mjmahon@aol.com (Michael J. Mahon)]

Jplcsch wrote:

>"Leon Jacobs" <leon.jacobs@gmail.com> wrote in message
>9988ca7b.0411130408.61858279@posting.google.com">news:9988ca7b.0411130408.61858279@posting.google.com...
>> Hi,
>>
>> I'm trying to get an Apple II europlus going. It turned on once and
>> after that, when i flicked the power switch I saw a spark near the
>> switch and it tripped my plugs circuit in my office.
>>
>> Now it does that every time I flip the switch. How can I fix this?
>>
>> Also, I've looked through the collection of floppy disks and can't
>> remember if the actualy DOS is coded into the ROM, or if you need a
>> system disk to boot it up.
>
>Look at the fuse and don't forgot that power supply Europlus is 220V not
>110V.
>Good luck

Since it pops his main circuit breaker every time he turns it on,
it is safe to say that his problem is not a fuse in the power supply,
which, if it were present, would have blown and caused the position
of the power switch to become irrelevant.

It may still have a blown fuse--_after_ the presently shorted
component, which could in this case be a line bypass capacitor.
(This is unlikely, since most shorted line bypass capacitors would
simply explode, taking themselves out of the circuit.  ;-)

More likely, there is no fuse, and the bridge rectifier is shorted,
possibly with other consequent failures.

-michael

Check out parallel computing for 8-bit Apples on my
Home page:  http://members.aol.com/MJMahon/