Reproduction Parts for 1916-1964 Chevrolet Passenger Cars & 1918-1987 Chevrolet & GMC Trucks


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Joined: Jun 2018
Posts: 254
Likes: 4
Backyard Mechanic
OP Offline
Backyard Mechanic
Joined: Jun 2018
Posts: 254
Likes: 4
I have a 1941 Master Deluxe and the radio was in with the parts I received with the car. I would like to install the radio in the car but as there are only 3 AM stations left in my area and they are all talk radio it would not get used much. This is more of a if it is a cheep and easy fix it will go in and if not then the blank plate will stay in.

The radio is model 985793. Two of the buttons are missing the rods behind them. I have never powered this on to know its condition. Before I go further than cleaning it I would like to know the following:

1. What type of plug should be connecting this? I saw a fuse with dried up rubber around it stuck in the back or the radio. I got the fuse out and the rubber just crumbled.

2. I have been told that the vibrator should be replaced on these when putting them back in the car. I did look at what is labeled as the vibrator and it has a old Delco logo stamped on it. Why does this need to be done and how do I know if this part is good?

3. All of the tubes have the same Delco stamp on them as the vibrator except one. It has a Sylvania stamp and defiantly looks newer. Only one tube has a black color to it. Other than a tube tester (i do not have one) is there any way to test these? I have a multimeter.

4. One of the knobs has a white dial behind it with the letters VMB on it. It can be turned to each of these locations. What are these?

5. Do these light up only when the radio is on or whenever the headlights are on, I suspect only when they are powered up. Or do they not light up at all? Never seen one of these working and have not dug into it far enough to find out if there are bulbs.

Originally I was just going to make the knobs and buttons work a Bluetooth speaker but I cannot bring myself to do that if there is a chance this may still work, especially since the car has an antenna. I can hide a speaker allot of other places.

Attached Images
full.JPG inside.JPG knob.JPG lable.JPG rearlable.JPG sn.JPG

1987 Monte Carlo LS
1941 Master Deluxe
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Joined: Jan 2009
Posts: 899
Likes: 3
ChatMaster - 750
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ChatMaster - 750
Joined: Jan 2009
Posts: 899
Likes: 3
VMB I think it means Voice Music B ? Your radio appears to be a 46 model Should light up when power turned on.

Dick

Joined: Jul 2015
Posts: 87
Shade Tree Mechanic
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Shade Tree Mechanic
Joined: Jul 2015
Posts: 87
Forget about it.

The connector is a bayonet type push in and twist with a fuse in it.
Just relacing the vibrator may or may not work. The buffer condensor has to be re0laced when putting in a working vibrator.
Dick is correct. The model number desinates 42-47.C46means 46.
Control in chrome is a dimmer for bulb when the headlight switch is activated.
VMB is a tone swich Voice Music Bass.
Mybe a riend with some experience can help and even then only AM. It will play without two of the rods under the push buttons only you will not be able to save stations with those.
I could go on but I won't.

Last edited by radiofixer; 01/24/23 03:12 AM.

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