BK 1902: Need schematic

[Relaxe]

Hello,

Due to a terrible drilling mishap, I broke my BK Precision 1902 power supply. 
I'm looking to simply replace the broken diode, ZD2, but I have no idea of it's part number and type. It could be Zener, not sure.

Is anybody here capable of finding the schematics?
I asked BK on their websitesupport form, and got no reply (how rude).

Thanks!

[Relaxe]

Well, Lucky me:

Schematic for the 1900, 1901, and 1902.
Notice it's the non-B versions.

[technogeeky]

Terrible drilling mishap. 

Do tell.

[Relaxe]

Well,

This model doesn't have an "output disconnect" button, but there are contacts on the back to provide the functionality.
I decided to add the button on the front, drilling a hole for it to go.
Since the power supply is to long to fit nicely into the press drill, I used the hand one. When the hole pierced trough, the bit went to far, ripping apart a couple of components.

I was precautious enough to tape a towel inside to prevent metal flakes from flying everywhere, but I forgot THAT possibility.
I could have placed a metal plate behind the hole to prevent it, but only hindsight is always 20/20.