Bought this power supply broken as figure could save some money, if it can be repaired. Issue with it is no output. So did check output stage and is fine, no shorted output's. Then check driver stage and is also fine. Then pulled OP-AMP 'U205" and power supply started to work, was able to get full voltage control, but no protection, or current control as OP-AMP was removed from circuit. At least it tell me power supply section isn't the issue as it worked fine and was regulated with no unusual noise and wasn't drawing excessive current. So assume OP-AMP maybe bad and replaced it, then same issue no output, or voltage control at all again. Tested voltage going to OP-AMP and notice it was at 30 volts DC on that rail, but seem to be within spec, as data sheet for OP-AMP say it can handle 44vdc max. Checked capacitors ESR and all check good and check diode in circuit and all are good. So stuck on this one, as don't have the schematic diagram and try finding one with a service manual with no success.
Any help from someone familiar with this power supply would be highly appreciated.