Hello
I have found a faulty diode that needs replacing; the only markings on it are:
15
2
I managed to find another working identical diode on the PCB which I have taken off and put in one of these cheap "mega328 transistor testers"
and got:
Uf = 765mV , C = 38pF
What is Uf (is it supposed to be forward voltage?)?
Partial schematic of where the diode is located
The a1015 transistor was faulty and all 3 pins were shorting.
The D152 diode next to it was faulty too.

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Mike Sharkey
2/13/2017 4:19:21 PM
Marvelous post. Appreciate it very much.