08-31-2015, 08:29 PM
The resistor readings you mentioned seem reasonable for their application. The blue resistor connected to the 227 grid is the detector grid leak and 2.5 meg would be a typical value.
The yellow resistors are bias resistors connected in the filament circuits and a value around 2K seems reasonable. The fact that both are relatively close in measured resistance (+ or - 20%) is encouraging, rather than being wildly different.
I dont know the exact function of the 30K resistor, but it is probably a voltage dropping resistor for one of the stages and as such would not be critical.
Given that the measured values correspond to their circuit application, the radio will probably work fine with the resistors as is. If you ever find the schematic you can take it from there and confirm whether they are exactly correct.
As far as the 16 uF cap, I would guess that it is the total capacitance of both sections (8 + 8 uF). Otherwise it would have to be 32 uF total capacitance and such a paper cap would be physically huge, much larger than what you show in the photo.
The yellow resistors are bias resistors connected in the filament circuits and a value around 2K seems reasonable. The fact that both are relatively close in measured resistance (+ or - 20%) is encouraging, rather than being wildly different.
I dont know the exact function of the 30K resistor, but it is probably a voltage dropping resistor for one of the stages and as such would not be critical.
Given that the measured values correspond to their circuit application, the radio will probably work fine with the resistors as is. If you ever find the schematic you can take it from there and confirm whether they are exactly correct.
As far as the 16 uF cap, I would guess that it is the total capacitance of both sections (8 + 8 uF). Otherwise it would have to be 32 uF total capacitance and such a paper cap would be physically huge, much larger than what you show in the photo.
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