1963 AM/FM Delco Radio Volume Control
#1
1963 AM/FM Delco Radio Volume/Tone Rebuild
Where can I get the volume/tone control variable-resistor stack (which will fit stock *****)? Mine is such a mess that I'd just assume install a fresh one vs try and rebuild my control
UPDATE: Rebuilt original control instead.....see below
Thanks
P
UPDATE: Rebuilt original control instead.....see below
Thanks
P
Last edited by pullin-gs; 02-16-2011 at 08:00 AM. Reason: Renamed thread
#2
63 radio problem? Wonderbar
What was the problem with your volume control? I posted previously that tapping volume shaft sharply would restore erratic volume control (too loud). Probably a ground issue.(63 swc) Interested in your fix. Regards, Abe G
#3
Le Mans Master
#4
PS: Just fixed my clock! Points needed work, and the movement lubed (use light clock oil!!! do not use 3in1 or anything else). Adjusted it also! I've got it to within three seconds each hour (was 15 seconds off).
#5
Fixed!
These old radios dont sound half bad!
The volume and tone are smooth as silk, and I did not have to use the tuner cleaner. I could not find a reasonably priced new control, so I rebuilt the old.
This is what I did.
1)Put my wallet away...this is a zero-dollar fix.
2)Pulled radio from car.
3)Unscrewed and removed radio metal top cover.
4)Unscrewed plate that mounts controls
5)Unscrewed big flat bolts that screw onto shaft housings and removed the plate.
6)Loosely pulled out the volume/tone/power control (it is one integrated unit).
7)Took picture of several angles of volume/tone control while wired up...this is important if you want to get the wires right when you re-install it.
8)Gently desolder all wires connecting to unit. There are 11 terminals total on the unit.
9)Place control on bench and go to work.
It is a press-fitted assembly. The metal tabs which hold it all together can be pulled back. I slid an exacto knife blade (filed dull) between the metal casing and the tabs to bend the tabs up. Do not pull too far or push forward and back more than needed....the tabs will break off! I did not dissassemble the switch portion, but everything else I took apart.
Keep track of all pieces...draw a picture.
Once apart, clean each piece with rubbing alcohol. The two donut-shaped flat black variable resistor pads (one for volume, one for tone) is what gets nasty. I cleaned them off, then took a pencil and put a light covering of graphite on the black face. This serves two purposes:
1) Lubricates
2) Gives a better contact to face of the resistor plate. It may change the electrical characteristics also, but not enough to be of any trouble.
Now put everthing back together again.
This project from start to finish took me about four hours (including fixing the clock).
you might put some lube on the metal shafts? But do not put it on any of the electronics.
Replace the light also if it needs it.
These old radios dont sound half bad!
The volume and tone are smooth as silk, and I did not have to use the tuner cleaner. I could not find a reasonably priced new control, so I rebuilt the old.
This is what I did.
1)Put my wallet away...this is a zero-dollar fix.
2)Pulled radio from car.
3)Unscrewed and removed radio metal top cover.
4)Unscrewed plate that mounts controls
5)Unscrewed big flat bolts that screw onto shaft housings and removed the plate.
6)Loosely pulled out the volume/tone/power control (it is one integrated unit).
7)Took picture of several angles of volume/tone control while wired up...this is important if you want to get the wires right when you re-install it.
8)Gently desolder all wires connecting to unit. There are 11 terminals total on the unit.
9)Place control on bench and go to work.
It is a press-fitted assembly. The metal tabs which hold it all together can be pulled back. I slid an exacto knife blade (filed dull) between the metal casing and the tabs to bend the tabs up. Do not pull too far or push forward and back more than needed....the tabs will break off! I did not dissassemble the switch portion, but everything else I took apart.
Keep track of all pieces...draw a picture.
Once apart, clean each piece with rubbing alcohol. The two donut-shaped flat black variable resistor pads (one for volume, one for tone) is what gets nasty. I cleaned them off, then took a pencil and put a light covering of graphite on the black face. This serves two purposes:
1) Lubricates
2) Gives a better contact to face of the resistor plate. It may change the electrical characteristics also, but not enough to be of any trouble.
Now put everthing back together again.
This project from start to finish took me about four hours (including fixing the clock).
you might put some lube on the metal shafts? But do not put it on any of the electronics.
Replace the light also if it needs it.
#7
Wow!
I can appreciate the know how and patience that you put into this repair! As for me, " a sharp rap with light hammer on volume cont4rol shaft' will have to do. Presently working. Good luck, Abe G
#9
740izo6:
63-67 Vette radio volume controls are almost completely made of unobtainium...............however, one can still be obtained here:
http://www.elliottsradio.com/cubecar...roductId=12303
HTH
63-67 Vette radio volume controls are almost completely made of unobtainium...............however, one can still be obtained here:
http://www.elliottsradio.com/cubecar...roductId=12303
HTH
#10
Le Mans Master
#11
Mike
#12
Pro
Here's what my chevrolet Radio Service and Shop Manuals say for the volume/tone/on-off control part #'s:
For '63 Wonderbar 7282024
For '63 AM/FM -- sorry, don't have that manual (was a later release)
For '64 7287620
For '65 (5 different numbers) 7290641, 7290744, 7291126, 7290633; and 7290296 (I suppose that mean's they'd all work)
For '66 and '67 7290296.
First pic below of 7290296; 2nd is of a '64, still mounted in radio.
r
x
For '63 Wonderbar 7282024
For '63 AM/FM -- sorry, don't have that manual (was a later release)
For '64 7287620
For '65 (5 different numbers) 7290641, 7290744, 7291126, 7290633; and 7290296 (I suppose that mean's they'd all work)
For '66 and '67 7290296.
First pic below of 7290296; 2nd is of a '64, still mounted in radio.
r
x
#14
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