I'm looking for a tone control for a Philco phono combo model 46-1203. Its a wafer type switch with 2 positions. The part number is 42-1770.
It was broke in half so I tried gluing it and it didn't hold. Figured if it at least held till I found another but no such luck.
Let me know if any of you can help as it would be appreciated.
Thanks
Jim
A picture (or link to a picture) would be useful since a substitute might be lying in some of our junkboxes - but we'd have no way of correlating it with a part number. Alternatively, some NOS multi-tap wafer switches can be easily modified to be as many stops as you need by adjusting the stop.
Sir, I was in Radio Shack today and they had a 2 pole 6 position wafer rotary switch for $2.95. The shaft was round. Suppose u need one that is flat.
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Doug
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:Sir, I was in Radio Shack today and they had a 2 pole 6 position wafer rotary switch for $2.95. The shaft was round. Suppose u need one that is flat.
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:Doug
Which is a lot easier than making a round shaft out of a flat one! {:>)~
Lewis
P. S. sorry about that,
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::Sir, I was in Radio Shack today and they had a 2 pole 6 position wafer rotary switch for $2.95. The shaft was round. Suppose u need one that is flat.
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Hi, you might want to check out Mark Opat's Old Radio Parts. www.oldradioparts.net He should be able to fix you right up.
Been pretty busy the past few days going to auctions and such. Anyway thanks for the ideas and tips and I sent an email to Mark at his web site so I'll see what he has to say.
I don't have anyway to send a picture as I'm not real up on this computer stuff yet.
I also am not able to use a control that is bigger than what I have as space does not permit it. Its lucky that this one fits at all.
Thanks again and I'll let you know how I make out.
Jim
Looking at the schematic for your unit, it seems that the tone switch is merely a spst switch that flips in a tone capacitor into the circuit, or else leaves the audio circuitry unimpeded.
At the same instant I am also recollecting that the particular fabrication of that type of unit was probably made with a phenol wafer and that unit was more of a rectangular shape , rather that the familiar FULLY round wafer commonly used. (Also easier for the wafer to get snapped into half when mechanically hit or its wiring is tugged upon excessively) That construction then leaves the sides being able to be trimmed down flat a bit, what with only one contact actions area being needed. Apparently, even your mentioned Radio Shack rotary units that are a bit smaller than a normal size profile, wouldn’t even work for you.
Here are size comparisons between the two construction techniques, note the need for the full wafer on the right, while the one at the left was trimmed down in its dimensioning at the [W] referencing.
If you don’t happen to come up with a switch elsewhere, this size is available at [xxx], and if its shaft length is in conformance, it should be no problem to limit the detent such only one sw position detent is made, instead of the 3 available.
> http://www.surplussales.com/Switches/SWRoMisc-2.html
73's de Edd
Seems like the bottom links HTML coding took a corruptive hit...trying again...
At the same instant I am also recollecting that the particular fabrication of that type of unit was probably made with a phenol wafer and that unit was more of a rectangular shape , rather that the familiar FULLY round wafer commonly used. (Also easier for the wafer to get snapped into half when mechanically hit or its wiring is tugged upon excessively) That construction then leaves the sides being able to be trimmed down flat a bit, what with only one contact actions area being needed. Apparently, even your mentioned Radio Shack rotary units that are a bit smaller than a normal size profile, wouldn’t even work for you. > http://www.surplussales.com/Switches/SWRoMisc-2.html 73's de Edd
Looking at the schematic for your unit, it seems that the tone switch is merely a spst switch that flips in a tone capacitor into the circuit, or else leaves the audio circuitry unimpeded.
:Here are size comparisons between the two construction techniques, note the need for the full wafer on the right, while the one at the left was trimmed down in its dimensioning at the [W] referencing.
If you don’t happen to come up with a switch elsewhere, this size is available at [xxx], and if its shaft length is in conformance, it should be no problem to limit the detent such only one sw position detent is made, instead of the 3 available.
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Seems like the bottom links HTML coding took a corruptive hit...trying again...
At the same instant I am also recollecting that the particular fabrication of that type of unit was probably made with a phenol wafer and that unit was more of a rectangular shape , rather that the familiar FULLY round wafer commonly used. (Also easier for the wafer to get snapped into half when mechanically hit or its wiring is tugged upon excessively) That construction then leaves the sides being able to be trimmed down flat a bit, what with only one contact actions area being needed. Apparently, even your mentioned Radio Shack rotary units that are a bit smaller than a normal size profile, wouldn’t even work for you. > http://www.surplussales.com/Switches/SWRoMisc-2.html 73's de Edd
Looking at the schematic for your unit, it seems that the tone switch is merely a spst switch that flips in a tone capacitor into the circuit, or else leaves the audio circuitry unimpeded.
:Here are size comparisons between the two construction techniques, note the need for the full wafer on the right, while the one at the left was trimmed down in its dimensioning at the [W] referencing.
If you don’t happen to come up with a switch elsewhere, this size is available at [xxx], and if its shaft length is in conformance, it should be no problem to limit the detent such only one sw position detent is made, instead of the 3 available.
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Edd, I sent you an email about that I am sending for that switch and I'll get back at you guys as to how I made out if it works. Still no word from that other tech if he has any or not.
Thanks
Jim