10-23-2023, 03:55 AM
Just for something different I picked up a 1953 Voice of Music 990 record player for $20. Never fixed a phonograph player. If I mess it up no big deal and I get some useful parts. Strictly a casual project to see what one of these looks like inside.
I’ve recapped this. Very easy to do. With the layout the new electrolytic caps are just hanging in space which is bad practice but it should be OK. I replaced all the dried out bad wiring to the audio transformer, speaker, power cord. Wiring was awful - someone tacked it in place with a loop of solder. Took out the added phono jack.
This was just something I fixed with some new caps I had in my parts drawer. Not exact values - I used a 22 mfd cap instead of a 20 - good enough. Can’t find my heat shrink tubing so I just used my normal electrical tape and plastic tubing on the electrolytics.
Once I did this it pulled about .44 amps at 110 volts which seems close to the 45 watts this is supposed to do.
The motor runs but the turntable doesn’t go. I plan to pay $10 and order a service manual. Some guy sells the instructions for oiling, motor servicing etc. About the mechanics of fixing this I know nothing but it seems all intact. All held together with these ugly little c clips which will have to be pryed off.
I have no illusions this is a restoration just casual Saturday morning tinkering. This service guy who sells the manuals and parts says “I don’t understand anything about the electrical when I asked him about the rectifier. Duh - if you care about these working you should.
My issue is this
(1) It has a silicone rectifier. This needs to go obviously. I’m just trying to figure out what value of the dropping resistor I should use and where this should go. I have a 1000 volt rated diode in the junk box.
(2) It has this 400 ohm resistor - this big honking wirewound pink deal which I assume is some kind of power resistor?? It should be replaced but I have no idea what wattage value. I’d assume a modern 10watt ceramic resistor would suffice.
I’ve recapped this. Very easy to do. With the layout the new electrolytic caps are just hanging in space which is bad practice but it should be OK. I replaced all the dried out bad wiring to the audio transformer, speaker, power cord. Wiring was awful - someone tacked it in place with a loop of solder. Took out the added phono jack.
This was just something I fixed with some new caps I had in my parts drawer. Not exact values - I used a 22 mfd cap instead of a 20 - good enough. Can’t find my heat shrink tubing so I just used my normal electrical tape and plastic tubing on the electrolytics.
Once I did this it pulled about .44 amps at 110 volts which seems close to the 45 watts this is supposed to do.
The motor runs but the turntable doesn’t go. I plan to pay $10 and order a service manual. Some guy sells the instructions for oiling, motor servicing etc. About the mechanics of fixing this I know nothing but it seems all intact. All held together with these ugly little c clips which will have to be pryed off.
I have no illusions this is a restoration just casual Saturday morning tinkering. This service guy who sells the manuals and parts says “I don’t understand anything about the electrical when I asked him about the rectifier. Duh - if you care about these working you should.
My issue is this
(1) It has a silicone rectifier. This needs to go obviously. I’m just trying to figure out what value of the dropping resistor I should use and where this should go. I have a 1000 volt rated diode in the junk box.
(2) It has this 400 ohm resistor - this big honking wirewound pink deal which I assume is some kind of power resistor?? It should be replaced but I have no idea what wattage value. I’d assume a modern 10watt ceramic resistor would suffice.
