I need help identifying parts on a generic Korean 5k board

[mifflinsharks72]

I am having trouble identifying a diode that was physically burned by a cooked power supply mosfet. I could not get clear photo of the diodes in the power supply section but it looks exactly like D3 in the photo, no numbers just black on one end and a thin gold stripe. It has .6 voltage drop one way and reads open when I reverse the leads. I was thinking it’s a 4148. Any thoughts?

 

[rayma]

Maybe, or a Zener diode. Remove the bad one and look for markings.
It will have 4148 on it, if it's a 1N4148.

 

[mifflinsharks72]

The damaged one is not readable. I’ll pull one of the good ones and check it for numbers. Thanks !

 

[Perry Babin]

It appears it might be a 4148 in series with another (Zener) diode acting as a clamp for spikes/ringing. See attached.

 

[mifflinsharks72]

My amplifier is set up the same as that schematic. Looks like 4148 is corrrect. Thanks Perry!