Circuit Diagram for Digimess DP3005 power supply

[BruceAnderson]

Hi I have recently purchased one of these power supplies from ebay was sold as spares or repair.
The problem is somebody has tried to fix it before and judging by the appalling smd rework and silk screen print had great fun removing parts and swapping them eg two diodes have been switched for capacitors on the opamp circuits which ain't right.
Having a lot of trouble finding a circuit diagram to give me better odds on fixing this without having to reverse engineer the whole power supply.
Any help would be much appreciated.

[m k]

It seems to be pretty standard issue, both ways.

Drop the actual name and start looking closer devices that are externally equal.
One Farnell page had order numbers as HUC44-0x, maybe that can be used as a clue.