First look, seems to be complete. Motor runs. There is hum on the radio and the phono, so it needs a recap. The tuning string is also off it's pulleys, so will need to be restrung.

 

 

 

 

I have it apart.  It had some odd size nuts, 7/32 and 9/32 that made me digging for my socket set. There are 6 electrolytic capacitors to be replaced. Good news-the dial string appears to be intact, and it will probably just need dome lubrication of the pulleys and the variable cap to get it running smoothly.

 

I found 1 bad tube, 50X6 which has been ordered. There is 1 question mark about the blue capacitor at top. Only 1 lead seems to be connected. Was it broken or just left by a previous restorer, not needing that section of the capacitor? To make matters worse, I can't find it in my schematics. There were several production changes in this model, confusing the issue. I now have 3 sets of schematics and none of them match up exactly to what I'm looking at.

I installed a new 50X6 which proceeded to burn out in about 30 seconds. I put in a 35Y4 which is noted in an earlier schematic version and it seems to be running well. No sound from the radio section, but I do get a hum when touching the lead from the phono arm, so I believe the audio section is OK.

On order is a new cartidge for the tone arm, a Pfanstiehl 51-3. It looks like it will use the same mounting holes as the old one which will make installation easier. I will need a different cable to work with the smaller pins on this cartridge.

 

 

Well I figured out why the schematics weren't matching up - I was looking at 46-1201 instead of 48-1201. I will be going through and trying to match everything up. I already see some discrepancies which might explain why the 50X6 (which was used in the 48-1201) keeps burning up.

There are 4 e-caps on the schematic. a 10uf and 40uf which I've replaced, There are supposed to be 2 16uf caps which someone had replaced with a 50uf and a 24uf and which I had replaced with those same values thinking they were correct. They will be pulled and replaced with the correct values. The blue capacitor is nowhere on the schematic, so I will probably remove it.

I replaced one out of spec resistor, awaiting another 50X6.

50X6's have arrived. I'm hooking to my variac to bring the voltage up slowly. The new tube is holding, but after a few minutes I hear some crackling and a little whiff of smoke from R100, a wirewound resistor held in a small metal enclosure off the chassis. I'll replace it. I've calculated at about 17 watts. I've ordered a 100 watt resistor from Amazon. It's overkill but it will get here quickly. I'll need to remove the metal housing and resisitor and make mounting holes for the new one.

  I decided to go with a 50W 500 ohm-a little shorter

 Making progress. I corrected 1 wiring error on my part and now I get radio signal overlaid with squealing/oscillations. I haven't reconnected it to the set antenna which should help, or I may need to redress some leads. I get squealing on the phono side as well, which is interesting...

I found the problem in a disconnected lead from one of the paper caps. Works well now. I've installed the new phono cartridge and it puts out a lot of sound.

                                                                                    

 I just need to solder in the leads. I've added a .0047 capacitor to tone it down a little

 

 

 

 

Now it's just cleaning and doing a little restoration on the case. I've ordered some decals from Radiodaze since most are missing. I think it will be easier to apply them before I reassemble the unit.

 

 

 

 

 

 

 

 

 

 

 

 

to be continued...