Colin Swift wrote:
Hi,

I've been given a wavefront travel case Theremin to repair.... seems the
power supply is dead, it has a 3 pin DIN connector alas I am not 100% sure
as to what the voltages should be on these pins? Is there anyone out there
who knows? I tried e-mailing the company however haven't received a reply.

So far the voltages measured on the pins on the din connector are -12, 0
and -0.71V - I guess the latter pin should be +12v. The power supply that
came with the unit is an adapted computer psu with output voltages of +/-12v
and +5v - but only 3 outputs are used. Looking at the resistor to the 'on'
LED (220 ohms) I am now 90% sure that there should be +12V and not +5V on
this line. I just want to be 100% sure if possible. The transformer is one
of those impossible to open things (sealed - cant see any screws) and as its
not mine, I'm not overly keen to take a hacksaw to it.

Anyway, hope someone out there knows, tho I guess its a long shot so
thanks in advance for your help.

Colin


----------------------------

I dunno, but if you ever get it fixed, please feel free to yell "Beam Me
Up, Scotty!!"

'motsco'