02-22-2019, 01:17 PM
This is a question about our values:
My model 16b, code 121, appears to be somewhere between runs 5 and 14 (based on the tone control) and corresponds to the schematic that is in Service Bulletin 165-B
Attached is a pic of the schematic that shows how the double cap #52 (7296-G) has been divided into two parts.
On my set, the 0.5 uF cap (#52) is a paper tubular; the 0.002 cap (#52a) is bakelite cap with part no. 3903-AH stamped on the side.
I understand that this corresponds to a 3903-OSG, which has a value of 0.01 uF.
So, which is correct? 0.002 uF per the schematic or 0.01 uF per what was actually in the chassis (and looks original)?
To my (uneducated) eye this appears to be some kind of frequency filter tied to the AVC circuit that gets activated when the switch to the right is open (when closed, everything gets shorted to ground). True? In that case, is the value of cap critical or not?
Always grateful for the kind and informed responses to these newbie Q's!
Matthew W. Woodruff
My model 16b, code 121, appears to be somewhere between runs 5 and 14 (based on the tone control) and corresponds to the schematic that is in Service Bulletin 165-B
Attached is a pic of the schematic that shows how the double cap #52 (7296-G) has been divided into two parts.
On my set, the 0.5 uF cap (#52) is a paper tubular; the 0.002 cap (#52a) is bakelite cap with part no. 3903-AH stamped on the side.
I understand that this corresponds to a 3903-OSG, which has a value of 0.01 uF.
So, which is correct? 0.002 uF per the schematic or 0.01 uF per what was actually in the chassis (and looks original)?
To my (uneducated) eye this appears to be some kind of frequency filter tied to the AVC circuit that gets activated when the switch to the right is open (when closed, everything gets shorted to ground). True? In that case, is the value of cap critical or not?
Always grateful for the kind and informed responses to these newbie Q's!
Matthew W. Woodruff
