On Sat, Mar 30, 2024 at 09:19 AM, Bruce KX4AZ wrote:
....decided to take a chance on an Ebay sale of an "as is" unit.? The cosmetic appearance didn't look too bad, and the fact that it powers on with at least a hiss?in the speaker, and that it was part of a ham estate,? gave me just enough hope to make an offer that was accepted.? But once I have it in hand I will need to lean heavily on the S20R experts here, since I have limited skills (truthfully, ZERO) with regard to troubleshooting and/or restoring tube radios of this type.
An update on this, I received the S20R boat anchor last week, and I was encouraged by the above average cosmetic appearance of the cabinet, and the fact that the power cord had previously been replaced.? The unit powers on as soon as plugged in (power switch bypassed?), with dial lights and tube filaments illuminated....at least the tubes with a glass enclosure.? But there is absolutely nothing detectable from the speaker, not even a hiss of any kind.? I have the schematic and service manuals in hand...but I am pondering what the next most logical steps might be.? I am thinking that would be to open the chassis cover to see if any of the caps etc have already been replaced.? Would checking for the presence of B+ voltage be another key step? And I suppose checking the filaments on the non-glass tubes would make sense too.
