12-04-2017, 12:49 AM
Well, I fired it up and it works! The transformer sizzles and fries through the speaker but gives about 150v on one plate and 250 on the other. Another resistance measurement of the primary showed NO continuity! I assume the the high voltage is working through carbon tracks between the ends of the broken wires. And the sizzle is arcing across the break. Anyway it worked long enough for me to check voltages, bias voltages, etc. Interestingly, I had 2 24A's fail during the testing causing me some head scratching. I lost my bias voltages and finally found 1 24 had shorted from filament to cathode. Then the radio quit working and eventually was surprised to find about 70v on the grid of one of the other 24's. Thankfully I found a 124 Arcturus and another 24A in a box of old tubes. They worked. I was actually quite surprised at the sensitivity and selectivity with about 40' of antenna in the basement.
Now to repair the OT, cleanup the bottom cover and the tube shield. Then, start on the cabinet. I'm not a big fan of finish work! There is a shop that does a lot of radio cabinets in Grand Rapids, MI about 15 miles from here. I may see what he charges, but I'm afraid I don't want to get a lot tied up in a common radio. Golden Radio Service (goldenradioservice.com) sends his restorations to this guy for refinishing. Golden Radio Serice is about 10 mile from me. Never knew he existed. I may call him to see if he has an OT for this radio in his junk box.
Now to repair the OT, cleanup the bottom cover and the tube shield. Then, start on the cabinet. I'm not a big fan of finish work! There is a shop that does a lot of radio cabinets in Grand Rapids, MI about 15 miles from here. I may see what he charges, but I'm afraid I don't want to get a lot tied up in a common radio. Golden Radio Service (goldenradioservice.com) sends his restorations to this guy for refinishing. Golden Radio Serice is about 10 mile from me. Never knew he existed. I may call him to see if he has an OT for this radio in his junk box.