For sale is a BK Precision 1761 power supply
Two channels are 0-35V 3A and one channel is 4-6V 5A. The unit can be configure to produce 0-35A 6A or 0-70V 3A using series/parallel mode. The supply is built using almost entirely through hole components and very easily serviceable. I have a BK Precision 1760 that I use as my main prototyping supply and have been very satisfied with it.
Manual:
https://cdn.testequity.com/documents/pdf/bk/1760A_manual.pdfDatasheet:
https://www.alliedelec.com/m/d/97d34133d57c08922ac0cde9e7df46bc.pdfWiring schematic and service manual in digital format will be given upon purchase
I've tested the device as follows:
2x 6ohm resistors in series to get full load of 3A on channels A and B
10ohm resistor on 5V channel to produce 0.5A current
Open circuit test into multimeter in series mode measured 0-76V
Coarse/fine potentiometers all working
Panel meters on all 3 channels report accurate levels, confirmed with Fluke 87V and Keithley 197
Minor cosmetic damage to top right corner of front panel (small crack)
Small bend in one of heat sink fins, doesn't effect cooling capacity
Asking price is $400 plus shipping