The cabinet of this radio is in reasonable condition, I am not so sure the speaker cloth is original, and a replacement back panel has been fitted at some time in the past.
Here is a before and after photo showing the change to the dried and cracked old lacquer, it responded well to just a clean with Liberon wax and polish remover, (still slightly wet in photo) and will look even better when it gets a final treatment of furniture restorer type oil.
After a lot of struggling I finally managed to pull the 2 knobs off the shafts at the front of the radio. The side knob decided to be a lot more difficult though, it was recessed into the side of the cabinet and slippery. I couldn't do my usual trick of sliding the hem of a piece of material under the knob, pulling it around and twisting around the shaft under the knob, then pulling hard, because it was recessed.
I squirted WD40 in as best I could then had another go, this time being a bit more brutal with 2 screwdrivers either side into the recess.
A small mark on the edge of the hole making the recess would not matter too much as there was an escutcheon to cover the hole.
Anyway the chassis is now out of the cabinet.
It looks like a few of the battery wires may have been changed at some time.
It looks rather empty underneath.
I just love these simple to see switches, but they can be problematic with the phosphor bronze springs breaking off so be careful
I wonder if the speaker is original, it has a seal on the chord tying the cloth around it.
Here is the schematic, I have added in the various voltages.
The full service information is on my website here; http://kbmuseum.org.uk/kb_service_manuals/KB_333_kb.pdf
Anyway off to do a bit of preliminary testing, I was very lucky with the 279 I just restored, on UKVRRR, all of the transformers ware OK, lets hope I am as lucky with this radio.
Mike
Here is a before and after photo showing the change to the dried and cracked old lacquer, it responded well to just a clean with Liberon wax and polish remover, (still slightly wet in photo) and will look even better when it gets a final treatment of furniture restorer type oil.
After a lot of struggling I finally managed to pull the 2 knobs off the shafts at the front of the radio. The side knob decided to be a lot more difficult though, it was recessed into the side of the cabinet and slippery. I couldn't do my usual trick of sliding the hem of a piece of material under the knob, pulling it around and twisting around the shaft under the knob, then pulling hard, because it was recessed.
I squirted WD40 in as best I could then had another go, this time being a bit more brutal with 2 screwdrivers either side into the recess.
A small mark on the edge of the hole making the recess would not matter too much as there was an escutcheon to cover the hole.
Anyway the chassis is now out of the cabinet.
It looks like a few of the battery wires may have been changed at some time.
It looks rather empty underneath.
I just love these simple to see switches, but they can be problematic with the phosphor bronze springs breaking off so be careful
I wonder if the speaker is original, it has a seal on the chord tying the cloth around it.
Here is the schematic, I have added in the various voltages.
The full service information is on my website here; http://kbmuseum.org.uk/kb_service_manuals/KB_333_kb.pdf
Anyway off to do a bit of preliminary testing, I was very lucky with the 279 I just restored, on UKVRRR, all of the transformers ware OK, lets hope I am as lucky with this radio.
Mike
