On 04/26/2016 08:50 PM, Charles Gutman wrote:
> My 128 is not getting power through the expansion port. No game
> cartridges work, Ramlink won't power up (Just had it fully tested and
> it works perfectly). Also the 128 powers and loads and runs perfectly
> from the serial port. I did a reference check and found that the 5vdc
> output to the port are located at pin 2 and pin 3 respectively. Thus,
> would it be considered "safe"  to run jumpers from the User port and
> from the cassette port to pins2and 3 of the expansion port to power
> it up so I can run my carts? I am actively seeking another 128 at
> this time so I won't have to fix anything on it in case anyone has
> one for sale where the exp port functions.
>
> Just could use a little input on this matter.
>
> Thanks,
>
> Charles
>

Hello, Charles and first maybe the grammar police have to weigh in.  Did
you really mean "...is not getting power TO the expansion port"?  What
did you mean by "loads and runs perfectly from the serial port"?  That
doesn't seem to make sense.  Do you mean that the correct DC voltage is
observed on the appropriate serial port pins?  The voltage is either
absent or at the incorrect level at the expansion port pin(s) per your
description.  You need to check the C-128 schematic and trace this back
to the DC power input plug to the 128. Could be a failed regulator.  I
don't own a 128 or have the schematic for same so I can't provide
further comment.  Sincerely,

--
J. B. Wood             e-mail: arl_123234@hotmail.com

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