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Original Message

RE: Not according to the Eico schematic

Posted by DAK on June 12, 2017 at 11:49:35:

I was just in there yesterday, but maybe i did not remember the filament circuit going from the rectifier to other tubes. Anyway it was mostly a mental exercise as it turns out. I have pretty much nixed that idea.
The schematic does have errors in it and frequently EICO would make running changes to the circuit without updating the schematic. For example, on my copy of the owner manual the filament circuit is biased with positive dcv from the last tap of the B+ supply. the 2 resistors used are 100k and 27k But it appears that the schematic has the 27k as the dropping resistor and 100k to ground. This, is opposite to what it should be, but if you check the schematic one would think that is how the resistors are labelled. thanks for the support, Dak