> Declan Moriarty wrote:
> Here I am back again. It didn't communicate. Examination revealed I had 
> a 5V, +14.5V and nothing on the -12V or whatever. I found  an orange 
> glass thing (?diode? Like a 1N914 except the orange bit is longer and no 
> cathode mark) with no markings also smoked and blown away. The 
> positioning of the other power pins leads nme to thinK it's the 
> -12V/-15V. Tracks are blown, and I'll have to find where they went. The 
> -12V appears to be for comms only

How about checking your processor or UART lines, and connecting
a MAX232 device to it? You probably only need Rx and Tx, 
maybe some RTS or CTS (lets hope not).

Regards,

Pieter Hoeben

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Author: Pieter Hoeben
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