02-24-2026, 12:05 PM
Hi Larry, we're lucky MicaMold didn't make transistors. Can you picture one of these with 3 wires?
So, the color codes are confusing because at one time there were no standards for these because only a few manufacturers, or maybe one, made them. They just used what they wanted and some were intuitive. To be really sure you're seeing a cap or resistor it should be identified using the schematic. In the chassis, try to identify the parts or tube terminal the part in question is connected to. Maybe it's close to a tube socket to get you in the vicinity. It helps to write a pictorial diagram of the connections on paper then compare the diagram to the schematic. If the schematic has a parts list, often it will give you a description like "wirewound" or "mica". I'm thinking that this is a resistor because you said it is burnt.
So, the color codes are confusing because at one time there were no standards for these because only a few manufacturers, or maybe one, made them. They just used what they wanted and some were intuitive. To be really sure you're seeing a cap or resistor it should be identified using the schematic. In the chassis, try to identify the parts or tube terminal the part in question is connected to. Maybe it's close to a tube socket to get you in the vicinity. It helps to write a pictorial diagram of the connections on paper then compare the diagram to the schematic. If the schematic has a parts list, often it will give you a description like "wirewound" or "mica". I'm thinking that this is a resistor because you said it is burnt.
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