11-16-2020, 08:55 AM
Hi Skip,
Yes RCA did use tar when they constructed transformers but for the most part they kept it on the inside rather than the outside like yours. [Image: https://philcoradio.com/phorum/images/sm...on_lol.gif] This is what I would do. Remove the 80 tube, plug the set in, and the room doesn't go dark measure the voltage on the hv winding from the ct to each end. Voltages should be pretty equal within a few volts. If more than 5v it's probably a goner. Leave it run for 5 or 10min and check the temp if you can fry an egg or very uncomfortable to touch it's scrap.[Image: https://philcoradio.com/phorum/images/sm...wisted.gif] All of this is good news because now there is no worries about that one setting your house a blaze or having a distinctive odor, some folk have a sensitive proboscis.[Image: https://philcoradio.com/phorum/images/sm...n_evil.gif] Criteria for replacement. Something that will fit, was removed from a radio chassis that was used with the same number tubes or more, has this same filament/heater voltages, and the hv within about 20% either way.
Looked at the diagram and it's a Philco model 66 more or less...
Mike,
I would hand rewind a transformer before dealing with a profiteer.
Yes RCA did use tar when they constructed transformers but for the most part they kept it on the inside rather than the outside like yours. [Image: https://philcoradio.com/phorum/images/sm...on_lol.gif] This is what I would do. Remove the 80 tube, plug the set in, and the room doesn't go dark measure the voltage on the hv winding from the ct to each end. Voltages should be pretty equal within a few volts. If more than 5v it's probably a goner. Leave it run for 5 or 10min and check the temp if you can fry an egg or very uncomfortable to touch it's scrap.[Image: https://philcoradio.com/phorum/images/sm...wisted.gif] All of this is good news because now there is no worries about that one setting your house a blaze or having a distinctive odor, some folk have a sensitive proboscis.[Image: https://philcoradio.com/phorum/images/sm...n_evil.gif] Criteria for replacement. Something that will fit, was removed from a radio chassis that was used with the same number tubes or more, has this same filament/heater voltages, and the hv within about 20% either way.
Looked at the diagram and it's a Philco model 66 more or less...
Mike,
I would hand rewind a transformer before dealing with a profiteer.
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!
Terry
