Thanks for reply. I try to draw the scheme from the pcb.Without a schematic or at least a partial drawing of the circuit where that diode is, we are all guessing...
You are absolutely right, I replaced a schottky diode that was shorted (see attached picture).PS: for a diode to go like that, that usually suggests some other component has gone short circuit and is drawing excessive current thru that diode. The diode is a symptom, the cause may well be elsewhere.
Thanks for the info. The diode was damaged due to a short circuit (see my replay to sagor). You are right the converter is W6251.I don't have much detail but this part of a reverse-engineered schematic shows them but unfortunately no part No.
It looks as though D1 has taken some current!
I believe the W8251 should be W6251
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by Jake Hertz
by Jake Hertz
by Luke James