11-21-2019, 11:36 AM
Philco 46-200 restoration project. Ready to dive in.
All caps will be replaced. But I have a couple of newby questions about resistors:
1. If a given resistor tests within specs (taking into account whether it's a 20% or 10% tolerance resistor), should I leave it in place? In other words, replace only the bad ones?
2. I know that changes were made throughout the production run on this radio, but mine has a resistor or two where the schematics (and subsequent production change notes) don't show one; and conversely, it is missing a resistor or two where the schematic says there should be one. When it comes to the resistors, should I restore the radio strictly to the schematic? Or should I restore it to "as found" configuration?
I should mention that it works as is, meaning it picks up stations and has good volume.
I should also mention that it looks like it has had a minimum of tampering -- I really suspect it left the factory with the resistor configuration it has now. BUT I'm pretty new to this... so I'm asking the gurus.
All caps will be replaced. But I have a couple of newby questions about resistors:
1. If a given resistor tests within specs (taking into account whether it's a 20% or 10% tolerance resistor), should I leave it in place? In other words, replace only the bad ones?
2. I know that changes were made throughout the production run on this radio, but mine has a resistor or two where the schematics (and subsequent production change notes) don't show one; and conversely, it is missing a resistor or two where the schematic says there should be one. When it comes to the resistors, should I restore the radio strictly to the schematic? Or should I restore it to "as found" configuration?
I should mention that it works as is, meaning it picks up stations and has good volume.
I should also mention that it looks like it has had a minimum of tampering -- I really suspect it left the factory with the resistor configuration it has now. BUT I'm pretty new to this... so I'm asking the gurus.
