Can you do a sharp photo of parts inside the chassis? Then we can estimate the age and what parts are possibly dubious.
However, an amp using 6V6's in conjuction with novals like 12AX7 is likely to be very old - around 1948 - 1952. 1948 or so was when the 12AX7 became widely available and the 6V6 not yet made obsolete by 9-pin pentodes and tetrodes. So all carbon resistors and all capacitors are suspect until proven innocent.
However, an amp using 6V6's in conjuction with novals like 12AX7 is likely to be very old - around 1948 - 1952. 1948 or so was when the 12AX7 became widely available and the 6V6 not yet made obsolete by 9-pin pentodes and tetrodes. So all carbon resistors and all capacitors are suspect until proven innocent.
Connect the pilot lamp across teh heater line - the two grey wires on the power transformer.
However, this amp uses a 12.6 V heater line, so don't use a 6.3 V lamp.
You could use a 12V light. However, use a 15 V light. It is good practice to run incandescent lamps in pilot service a little low. They last a heck of a lot longer.
However, this amp uses a 12.6 V heater line, so don't use a 6.3 V lamp.
You could use a 12V light. However, use a 15 V light. It is good practice to run incandescent lamps in pilot service a little low. They last a heck of a lot longer.
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