Posts: 4,908
Threads: 54
Joined: Sep 2008
City: Sandwick, BC, CA
DKinYORKpa Wrote:Great....thanks.....I did notice a rusty, tubeless Philco 87 chassis on eBay for $24.99, 100 miles from me. I suppose that if that transformer was good and I wanted an original look, I could think about that one.
In all likelyhood it won't be good, open primaries on the audio interstage are a common failure with many radios of this era with push-pull 45 tubes not just Philcos. The original interstage is mounted inside a metal cover and the cover is larger then the newer replacements so you could mount the new transformer inside. There was also an article in a past issue od the Old Timer's Bulletin that described how to make a solid state interstage substitute, it's something that I have been meaning to try.
Regards
Arran
Posts: 7,303
Threads: 269
Joined: Dec 2009
City: Roslyn Pa
Not a good choice as it is designed to replace odd transformer in an early '20's battery set. use this one.
http://www.tubesandmore.com/
Goto transformers/audio and get the Hammond P-T156 it's $17.
Terry
Gosh I haven't used a GOTO in a long time!!
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
Posts: 193
Threads: 50
Joined: Oct 2011
City: York PA
Can I assume that the 2.2 mfd caps that AES sells will be OK for the 2.0 mfd caps that go in the cap block?
Posts: 7,303
Threads: 269
Joined: Dec 2009
City: Roslyn Pa
Yep
Terry
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
Posts: 7,303
Threads: 269
Joined: Dec 2009
City: Roslyn Pa
So how are you making out with the old model 87?
Terry
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
Posts: 193
Threads: 50
Joined: Oct 2011
City: York PA
Quote:So how are you making out with the old model 87?
It was on the back burner and I just tore into it today. The audio transformer replacement went well. It is neatly hidden in the old housing. Then I moved on to the cap tar box. I successfully removed it by coaxing it carefully up and reaching under it and snipping all of the wires and did not have to de-solder and disconnect all of the wires under the chassis. Next was the heat gun on the box. Very time consuming, but it's empty. I'm guessing that I'll next cut a piece of plywood to snuggly fit inside the can with terminal strip(s) to hold all the caps and wires. That's going to take a careful drawing, labeled wires and double-checking
.
Posts: 7,303
Threads: 269
Joined: Dec 2009
City: Roslyn Pa
Great! Mine started eating 80 toobs. Me thinks one of the new caps has shorted. Did play it alot over the last 6 month or so maybe 5hrs a day.
Terry
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
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
