01-12-2023, 09:26 PM
Good Evening All:
I recently bought a CoRadio (looks like around 1948) at a flea market. It came with both original keys, and the coin rejector is in it and works. Overall, it is good shape. I replaced all of the caps (except the micas), and any resistors that were out of tolerance. All of the tubes are good (35Z5, 35L6, 2 x 12SK7, 12SA7, and a 12SQ7 - six tubes total). I brought it up through the isolation transformer, variac, and dim bulb tester, and it appears to come up normally, but all I get is hum when I turn up the volume. I don't receive any stations. I have attached an external antenna, and when I get close to the antenna, the hum/static gets loader.
I would give the model number, but I haven't been able to find hardly any documentation. This is the box like version painted in textured grey, and you get one hour of play for a quarter. I understand that it is probably a pretty much standard AA6, but without a schematic/parts list, and my limited experience, I am afraid of doing something that will make things worse. Anyone have any ideas on what I should be looking at? Thanks
I recently bought a CoRadio (looks like around 1948) at a flea market. It came with both original keys, and the coin rejector is in it and works. Overall, it is good shape. I replaced all of the caps (except the micas), and any resistors that were out of tolerance. All of the tubes are good (35Z5, 35L6, 2 x 12SK7, 12SA7, and a 12SQ7 - six tubes total). I brought it up through the isolation transformer, variac, and dim bulb tester, and it appears to come up normally, but all I get is hum when I turn up the volume. I don't receive any stations. I have attached an external antenna, and when I get close to the antenna, the hum/static gets loader.
I would give the model number, but I haven't been able to find hardly any documentation. This is the box like version painted in textured grey, and you get one hour of play for a quarter. I understand that it is probably a pretty much standard AA6, but without a schematic/parts list, and my limited experience, I am afraid of doing something that will make things worse. Anyone have any ideas on what I should be looking at? Thanks
