Sorry about that...I purchased it off 'flea bay"...UPS delivered it...of course I found out that all the horror stories concerning UPS using packages like "footballs" are true...the meters were all pushed in the mounting brackets on the bottom were all broken...I had to drill 2 holes in the front panel in order to secure the mounting plate for the meters in place...I did a thorough inspect of everything inside and all looks great,like new!...I plugged it in(no variac) and everything came on ...I checked each 30v supply for variability and it appeared to be working great...then the relays is both supplies started clicking and next there was no output voltage from the 2 30v supplies.however,the 5 volt supply is fine...hence the need for a schematic befor proceeding further...Thanks...Dave