"NSM" wrote in message news:TxLxe.75544$wr.36553@clgrps12...
"Pszemol" wrote in message
...

It has 7 pins, two for +5V/GND input, two for the 45V output
and three strange pins in the middle showing about 6V on
a working unit but when measured with ohm-meter they show
short (transformer taps?).

Are the 6V pins used? Do they feed separate circuits?

They look like they are used. There are tracks goning from
these 3 towards the display, but they disappear under it...
There are three separate track going from them.
I was thinking it might be heater for the vacuum display cathode?
I have never repaired a device with VF-Display before, so
I am not sure of the circuit... Do you know any schematic example?
It looks like old, already "fogotten" technology today ;-)

What I am looking for is the place I can get replacement,
or - an idea on how to build similar circuit from discrete
components or other chip from different manufacturer...