04-09-2017, 06:57 PM
Adamrobertg
Hello and welcome.
Charles (simplex1040) is right, the toggle on-off switch is original to this set.
Heed the warnings from simplex1040 and Bob (klondike98). Replace the insulation on all of the wires coming out of the power transformer. The best way to do this is to unsolder each lead from where it connects inside the radio, taking careful notes as you go. Once you have the transformer removed, remove the bells (covers or "clam shells") as Bob said. Then after you have the bells off, use a pair of needle nose pliers to remove the old insulation from one wire and one wire only. Now slide some heat shrink tubing over that wire, pushing it as far into the paper insulation of the transformer as you can. This is the safest way to handle replacing transformer wiring insulation. Anything less runs a serious risk of shorting out the transformer. There is still a risk if you do this work, but it is much safer than just leaving it alone. Use a lighter or heat gun to shrink the tubing.
Now repeat this process for each of the remaining transformer leads (wires).
You really should use color coded heat shrink tubing, available from Mouser Electronics among others, so you will know which wire is which. You can use the same colors as the originals (as closely as possible), or do as I do and use the standard RMA/EIA color codes instead (green for filament leads, red for high voltage secondary (rectifier plates), orange or other contrasting color (a compromise for red with yellow tracer) for high voltage center tap, yellow for rectifier filament leads, black for 115 volt AC primary).
If you do not do this - and, yes, it is a fair amount of work - you run the risk of your transformer shorting out.
Hello and welcome.
Charles (simplex1040) is right, the toggle on-off switch is original to this set.
Heed the warnings from simplex1040 and Bob (klondike98). Replace the insulation on all of the wires coming out of the power transformer. The best way to do this is to unsolder each lead from where it connects inside the radio, taking careful notes as you go. Once you have the transformer removed, remove the bells (covers or "clam shells") as Bob said. Then after you have the bells off, use a pair of needle nose pliers to remove the old insulation from one wire and one wire only. Now slide some heat shrink tubing over that wire, pushing it as far into the paper insulation of the transformer as you can. This is the safest way to handle replacing transformer wiring insulation. Anything less runs a serious risk of shorting out the transformer. There is still a risk if you do this work, but it is much safer than just leaving it alone. Use a lighter or heat gun to shrink the tubing.
Now repeat this process for each of the remaining transformer leads (wires).
You really should use color coded heat shrink tubing, available from Mouser Electronics among others, so you will know which wire is which. You can use the same colors as the originals (as closely as possible), or do as I do and use the standard RMA/EIA color codes instead (green for filament leads, red for high voltage secondary (rectifier plates), orange or other contrasting color (a compromise for red with yellow tracer) for high voltage center tap, yellow for rectifier filament leads, black for 115 volt AC primary).
If you do not do this - and, yes, it is a fair amount of work - you run the risk of your transformer shorting out.
--
Ron Ramirez
Ferdinand IN
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