On 23/8/19 2:05 am, dtmalloy49@gmail.com [electricboats] wrote:
>
>
> Hi All, My Curtis 1236 controller crapped out and is unrepairable.
> According to the repair facility it is "UR due to 5V line damage,
> micro short. No way to obtain customer settings." I have purchased a
> new identical Curtis controller and want to avoid the same issue. Has
> anyone in this group faced this problem and have suggestions for a
> fix? I look forward to all suggestions. TY
>
>
I destroyed a different brand of controller by powering it up
incorrectly (applied power to the enable input with out first letting
the 'bleed resistors' charge the input capacitors via the main power input).
It was completely un-reparable as to make the circuit fully water proof
they 'pot' the board in epoxy resin, I got the cover off and all that
was to be seen was the top of some of the larger components (said
capacitors) poking through a hard shiny black blob. It is possible to
get the resin off if you are keen enough but it would have to be an
expensive and exotic circuit to go to that sort of trouble.
Posted by: Matthew Geier <matthew@acfr.usyd.edu.au>
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