#1
Hey all.
I've been trying to but the ProCo Rat clone from tonepad over the last week.
As with most first drafts, I plugged it in, turned it on, and got nothing.

After de-bugging for a day or so, I'm pretty sure I fried my transistor on installation. The tonepad instructions call for a 2n5458.

I took some readings but I am not entirely sure what they tell me. I am also not sure if a 2n5458 is a PNP or NPN.

Here's a little table I made. The flat side of the transistor was facing to the left when the readings were taken. I used the diode test function on my multimeter.


Red Lead of Multimeter Black Lead of Multimeter Reading


Bottom Lead of transistor Middle Lead of transistor .733 V

Middle Lead of transistor Bottom Lead of transistor No reading

Bottom Lead of transistor Top Lead of transistor .729 V

Top Lead of transistor Bottom Lead of transistor No reading

Middle Lead of transistor Top Lead of transistor Starts at 1 V
and decreases to
.305 V

Top Lead of transistor Middle Lead of transistor Starts at .32 V
and decreases to
.305 V

Since I'm not sure of the type of transistor I have, I don't know which lead is the base, collector and emitter.
I've read that if a transistor is functional, then I should get no reading from the collector to the emitter or vice-versa.

Is this transistor fried???

Any help is greatly appreciated.