12-08-2013, 09:13 PM
Well,
eventually I succeeded in bringing myself to start on this one. I think I bought it in the spring. Or early summer. Anyway.
Today I pulled the chassis out, as I expected it was repaired at some point and maybe it even works (at least the seller indicated that it did) but I want to do right by this radio and am not even interested if it plays right now.
For starters I noticed that all those caps that were replaced (some tin cans and two electrolytics) were installed over the existinfg ones that were disconnected.
The backelites all stayed, even those that are Mains filters which I strongly object to.
The version I have is the two 45 tubes output one.
http://www.nostalgiaair.org/PagesByModel...013881.pdf
(the second sch in this booklet).
I have noticed this:
the schematic shows 250k resistor #33 connected to the "H" terminal of the bias wirewound resistor #38. The "J" terminal has #47 resistor going to it and it is the only one there.
In my chassis (I did verify it is what I think it is, all the tubes line-up is correct) both the 250K resistor #33 (in my case I think it is 240k by the colors) and #47 (the latter is connected by a long wire and is at the opposite side of the chassis) resistor are soldered to the "J" terminal.
The "H" terminal is empty. Better yet it looks like it has never has been soldered to, factory clean, and the "J" terminal soldering looks factory also.
Does anyone know if there are factory variations with 90 2x45 chassis?
PS. Just thought that 2x45=90.......coincidence?
eventually I succeeded in bringing myself to start on this one. I think I bought it in the spring. Or early summer. Anyway.
Today I pulled the chassis out, as I expected it was repaired at some point and maybe it even works (at least the seller indicated that it did) but I want to do right by this radio and am not even interested if it plays right now.
For starters I noticed that all those caps that were replaced (some tin cans and two electrolytics) were installed over the existinfg ones that were disconnected.
The backelites all stayed, even those that are Mains filters which I strongly object to.
The version I have is the two 45 tubes output one.
http://www.nostalgiaair.org/PagesByModel...013881.pdf
(the second sch in this booklet).
I have noticed this:
the schematic shows 250k resistor #33 connected to the "H" terminal of the bias wirewound resistor #38. The "J" terminal has #47 resistor going to it and it is the only one there.
In my chassis (I did verify it is what I think it is, all the tubes line-up is correct) both the 250K resistor #33 (in my case I think it is 240k by the colors) and #47 (the latter is connected by a long wire and is at the opposite side of the chassis) resistor are soldered to the "J" terminal.
The "H" terminal is empty. Better yet it looks like it has never has been soldered to, factory clean, and the "J" terminal soldering looks factory also.
Does anyone know if there are factory variations with 90 2x45 chassis?
PS. Just thought that 2x45=90.......coincidence?
