[volt-nuts] Solartron 7071 beeping about twice a second

[David C. Partridge]

> I presume that when you push the 'DIG-FILT' key, pin 5 and 6 are 'shorted'
> when measured on the key board connector.

Correct. 

> 'FOD'

OK, I'll bite, what does that one mean?

> try to open the keyboard

I'm pretty sure the keyboard isn't amenable to being opened without permanent damage.

Dave