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How do I tell if I fried a Germanium Trans.?

Helland

Member
Messages
129
So i just built a rangemaster clone from a board I bought off ebay.
There is almost no output.
The Boost pot acts more like a volume.

I checked all the connections for continuity and they all seem good.

I'm thinking that i fried the transistor.

Any help?

Thanks
Jeff
 

JLee

Gold Supporting Member
Messages
2,759
Check the gain. Google "technology of the Fuzz Face" for a great article on selecting and testing germaniuim transistors and how to build a tester.
 

cj_wattage

Member
Messages
6,700
The Boost pot acts more like a volume.
Well, it sort of is like a volume control.

But what you're describing sounds more like you have a grounding problem. I had the same thing happen on a Rangemaster I recently built. There was very low output. I thought maybe the germanium was weak (even though I had tested it with my Atlast DCA). I figured out that I had overlooked one of the ground connections. Problem solved.

Check the voltage on all three leads of the transistor. If there is a grounding problem, you'll likely read close to 9v on all the leads.
 




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