zenner diode

[rabbit69]

The diode is on the psu not the main board and is through board mounted not a smd. It is a glass barrel shaped diode about 2mm long (excluding legs), it's orange at one end and black at the other, but with no id to what type it is, i.e bzy/bzx...
It's position on the board is D103 and I am sure it's a zenner as the symbol on the board shows it as one i.e normal diode symbol but with a tail off the line. Hope this helps spooky.....