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The voltage at the mount (measured with the handset) is 11.7 V. An RA slew at rate 9 drops this to 11.1 V, and a RA+DEC slew drops it to 10.4 V, with a flashing red LED. I found the primary cause was a power extension cable that I was using since the power lead from the PSU was fairly short. If I connect the PSU directly to the mount I get 12.2 V at the mount and 11.7 – 11.9V with a RA+DEC slew. The red LED is now solid throughout the slew, that’s one problem solved.
However, unfortunately it doesn’t seem to have solved the communications issue. Is it possible the low voltage operation has somehow damaged the mount circuit board, causing communication issues? It still seems to work normally using the handset alone, or in PC Direct mode from the PC.
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