[GreenKeys] M26 suddenly stopped coding, stuck on blank

[Jomar Quilatan]

Hi all,

I'm still in the process of reviewing the M26 documentation I have, in
order to narrow down a sudden issue, but just wanted to throw it out here
in case the diagnosis is surface level.

I was transmitting a text file from MMTTY onto my machine and all was well
until I noticed the carriage was roughly at the end of the line and was not
performing a carriage return, even though MMTTY was moving along as printed
in the text file.  I was expecting to see overlaid characters on my copy,
but to my surprise, it was blank.

The line where it happened was only supposed to be printing periods and
ringing the signal bell in varying alternations--towards the end of the
line, it started printing out a few numbers (namely 3 and 5), then went to
blank.  (Looking at the Baudot it seems like 3 involves only the 1st
selector and 5 only involves the 5th selector).  Almost seems like
something that engaged the levers weakened abruptly.

I switched to transmit on my unit, and the result was the same - any
keystroke would cycle the machine but none of the selectors would engage.

I don't know if I can fully rule out the selector magnet, but that was one
of my thoughts (maybe loop current suddenly increased due to a bad
resistor, etc).  Another was the actual assembly from the magnet to the
selector levers--but, observing that area at surface level, things seemed
to be moving as intended.

Any recommendations on what I should look at, if not in either of the above
areas?

Thanks in advance.
Regards,


*Jomar (Joshua Martin) Quilatan*
Mississauga (Toronto), Canada
RA 0-8045
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