05-17-2017, 10:54 AM
I found this one just a few miles from our house. Unfortunately, the top veneer had been destroyed by a house plant, and somebody had hacked-in a cheap PM speaker. It was sold as non-working. Somebody had also-hacked-in new capacitors without disconnecting the old ones in the bakelite blocks.
[Image: http://i269.photobucket.com/albums/jj77/...0found.jpg]
The wirewound resistor was bad. After I replaced it, I think I found the problem at one terminal, but the nice new replacement is in place. [Image: http://i269.photobucket.com/albums/jj77/...sistor.jpg]
I disconnected and labeled the wires to the capacitor black can. Somebody had soldered a terminal strip to one of the positions for the junction of two resistors, so I eliminated it. Be careful, the numbered terminal positions of the schematic and those in the under-chassis pictorial diagram do not match, except that terminal #4 is the same on both. I mounted a terminal strip to hold the new 6.8 MFD electrolytic capacitors under the former position of the long-gone can capacitors. I also mounted a fuse holder, as it seems like a good idea to have a fuse on any radios with a power transformer.
[Image: http://i269.photobucket.com/albums/jj77/...marked.jpg]
The can came apart with ease. The metal ring was just pressed onto the end of the can.
[Image: http://i269.photobucket.com/albums/jj77/...20open.jpg]
The terminal board with the new capacitors soldered to the appropriate terminals. I only had one 0.47 capacitor in my stock, so made the other two replacements for the 0.5MFD units by paralleling 0.22 and 0.3 MFD capacitors.
[Image: http://i269.photobucket.com/albums/jj77/...%20can.jpg]
The power switch tested as open. I removed it and sprayed some contact cleaner into the gaps, then worked the switch.
[Image: http://i269.photobucket.com/albums/jj77/...switch.jpg]
This is an easy to restore chassis. I simply had to unsolder four wires and clip the dial light wires, then remove five screws to remove the gang capacitor assembly, complete with the drive mechanism. This will make cleaning and painting the chassis much easier.
[Image: http://i269.photobucket.com/albums/jj77/...emoved.jpg]
[Image: http://i269.photobucket.com/albums/jj77/...0found.jpg]
The wirewound resistor was bad. After I replaced it, I think I found the problem at one terminal, but the nice new replacement is in place. [Image: http://i269.photobucket.com/albums/jj77/...sistor.jpg]
I disconnected and labeled the wires to the capacitor black can. Somebody had soldered a terminal strip to one of the positions for the junction of two resistors, so I eliminated it. Be careful, the numbered terminal positions of the schematic and those in the under-chassis pictorial diagram do not match, except that terminal #4 is the same on both. I mounted a terminal strip to hold the new 6.8 MFD electrolytic capacitors under the former position of the long-gone can capacitors. I also mounted a fuse holder, as it seems like a good idea to have a fuse on any radios with a power transformer.
[Image: http://i269.photobucket.com/albums/jj77/...marked.jpg]
The can came apart with ease. The metal ring was just pressed onto the end of the can.
[Image: http://i269.photobucket.com/albums/jj77/...20open.jpg]
The terminal board with the new capacitors soldered to the appropriate terminals. I only had one 0.47 capacitor in my stock, so made the other two replacements for the 0.5MFD units by paralleling 0.22 and 0.3 MFD capacitors.
[Image: http://i269.photobucket.com/albums/jj77/...%20can.jpg]
The power switch tested as open. I removed it and sprayed some contact cleaner into the gaps, then worked the switch.
[Image: http://i269.photobucket.com/albums/jj77/...switch.jpg]
This is an easy to restore chassis. I simply had to unsolder four wires and clip the dial light wires, then remove five screws to remove the gang capacitor assembly, complete with the drive mechanism. This will make cleaning and painting the chassis much easier.
[Image: http://i269.photobucket.com/albums/jj77/...emoved.jpg]
Web site: http://www.masekconsulting.net
Radio Photos: http://www.photobucket.com - album id FStephenMasek
