07-11-2025, 09:37 PM
Looking at the spacing of the control shafts it is obvious that the rheostat has been added after the chassis was first built and that the associated wiring is also not original. So I am not adverse to removing what is a useless addition. A purpose for the hole in the cabinet will need to be found.
The output valve grid coupling capacitor, 0.01mf, is slightly leaking, it will be monitored as soon as power is applied and if the grid voltage gets a bit too positive it will be changed.
The HT reservoir and smoothing electrolytic capacitors in the can are suspected capable of doing very little, the can will likely need to be opened and re-stuffed. I prefer to do this rather than put new ones under the chassis, there is insufficient room there anyway.
There is another slim ally can with several capacitors inside. These look to be non-electrolytic and will get checked as will all other capacitors. The can will remain in situ no matter what though.
Resistors are a mix of old carbon 'dog bones' and later ceramic cased carbon, they will be checked as I come to them.
The valves all look mechanically good, a couple have loose bases which will be re-glued.
I will need to find a speaker and output transformer for testing, perhaps taking the output from the output valve into another receiver temporarily.
Sam.
The output valve grid coupling capacitor, 0.01mf, is slightly leaking, it will be monitored as soon as power is applied and if the grid voltage gets a bit too positive it will be changed.
The HT reservoir and smoothing electrolytic capacitors in the can are suspected capable of doing very little, the can will likely need to be opened and re-stuffed. I prefer to do this rather than put new ones under the chassis, there is insufficient room there anyway.
There is another slim ally can with several capacitors inside. These look to be non-electrolytic and will get checked as will all other capacitors. The can will remain in situ no matter what though.
Resistors are a mix of old carbon 'dog bones' and later ceramic cased carbon, they will be checked as I come to them.
The valves all look mechanically good, a couple have loose bases which will be re-glued.
I will need to find a speaker and output transformer for testing, perhaps taking the output from the output valve into another receiver temporarily.
Sam.
Boater Sam.
