Just acquired a late 1940s Magnavox AM/SW/Phono Console Today!

[vortalexfan]

Originally Posted by DavGoodlin

I think mine is CR-198 E. Both original 6L6 are Ken-Rad (GE). I'm not surprised its playing on original caps either. No RCA or Philco of that vintage would work as found.

That record player is awesome, fine candidate for stereo ceramic cartridge, so you can play stereo records. I think my 48 Windsor has that same RP.

I got the proper audio plug in the mail yesterday and I installed it, but unfortunately there was no audio coming from the cartridge, which I figured out it was because someone screwed with the original tone-arm wire and so I have to install some new wire in the tone-arm.

The original cartridge by the way is still good, I tested it for output with my newly acquired EICO VTVM (that I finally found a set of test probes for) and I got a good strong deflection on the VTVM with it set in Ohms.

[init4fun]

Originally Posted by vortalexfan

I got the proper audio plug in the mail yesterday and I installed it, but unfortunately there was no audio coming from the cartridge, which I figured out it was because someone screwed with the original tone-arm wire and so I have to install some new wire in the tone-arm.

The original cartridge by the way is still good, I tested it for output with my newly acquired EICO VTVM (that I finally found a set of test probes for) and I got a good strong deflection on the VTVM with it set in Ohms.

Something to consider here, if sorting the wiring in the arm doesn't bring back the sound;

The typical failure of old carts is not that they fail electrically, but physically. Meaning, the soft parts that allow the needle's vibrations to shake the electrical pieces dry out and become solid. If it's a crystal cart the crystals themselves solidify with age, and old magnetic carts don't fare much better. In other words, electrically good is not proof of a working cart, making vibrations into amplifyable electrical representations of sounds is

[Electronic M]

Originally Posted by init4fun

Something to consider here, if sorting the wiring in the arm doesn't bring back the sound;

The typical failure of old carts is not that they fail electrically, but physically. Meaning, the soft parts that allow the needle's vibrations to shake the electrical pieces dry out and become solid. If it's a crystal cart the crystals themselves solidify with age, and old magnetic carts don't fare much better. In other words, electrically good is not proof of a working cart, making vibrations into amplifyable electrical representations of sounds is

I agree continuity isn't a definitive check of a cartridge....However if you read between the lines it sounds like he did an AC voltage test on the cart. If it produces AC voltage in proportion to stylus movement in a groove (or rubbing a finger tip on it...I know it's not the best thing to do) then its at least not dead...
Granted carts do dry out and get into a state where, while not dead, audio distortion is intolerably bad.
The best test is actually listening to it's output.

[jr_tech]

Does the phono input work? perhaps there was a good reason the plug was changed so that the phono could be plugged into the tuner input.

jr

[vortalexfan]

Originally Posted by jr_tech

Does the phono input work? perhaps there was a good reason the plug was changed so that the phono could be plugged into the tuner input.

jr

It seems to, when I hook the phono cable into the phono input and touch the ground lead it does hum.

Apparently when I went to remove the record changer from the cabinet the unit does indeed have its original record changer, but its been modified, the record changer used in this unit is a Webster-Chicago (Webcor) record changer model 256-19 which used its own unique cartridge assembly that had a flip over needle that selection of the proper side of the cartridge/needle was done via a lever on the back of the tone-arm (which that is what's missing/modified on my unit) they replaced the original cartidge (which I'm guessing was probably a high output crystal cartridge of the 3v variety,) which would explain the modification for inputting the phono output into the tuner input rather than the phono input, because the more modern 1V ceramic cartridge like the Sonotone 2T that they used to replace the original cartridge wasn't loud enough to play through the original phono input.

See picture below.