Howdy,

I have a non-working Needham EP-20 programmer that I am trying to repair.  I
have repaired the power supply and the programmer now interfaces to the PC
properly and even attempts to program.  However the parts cannot be read or
programmed.

Question:  Does anyone have a schematic for this programmer?  Does anyone have
any experience in repairing these?  (They run about $500 new.)  I want to use it
as a backup to my Promate as well as to program the occasional EPROM.

Thanks.

---- Steve