Hoffman Amplifiers Tube Amplifier Forum
Other Stuff => Solid State => Topic started by: Stankfut on August 20, 2015, 12:06:55 pm
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Hey all! Been away a while, and I just popped in with a quick question about transistors. I recently picked up a kimball organ, it blows fuses as soon as you turn it on. I don't really care if it works though, I got it to scavenge parts. It is late 60's vintage and has a truck load of discrete transistors in it. The problem is, they have no numbers on them. They are in a TO 92 type package, but they have colored stripes on them like resistors. I've searched the web but I can't find any info to decode the stripes. Any ideas?
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Any ideas
not for decoding the colors, you can google up a simple transistor tester schematic and breadboard/solder it up. the one I have was a kit for like $20. that should help you divide them into pnp/npn. I took all my old 60's - 70's ic's n transistors ground them up, found a *recipe* for extracting gold but the yield was like 1 lb gound up stuff to about 100grains gold, not a great return on investment :icon_biggrin:
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Late 1960s organ will be all silicon.
These are VERY CHEAP.
Go buy a 100-bag of whatever you need, it is less work than torching-out and testing old jellybeans.