Posts: 15
Threads: 2
Joined: Oct 2017
City: Monterrey, Mexico
Guys,
I bought the schematics and production changes from Chuck Schwark they are to arrive to my POBox after it will take 2 to 3 days to arrive Mexico. In the mean time I'm working on a "philco battery" for this beatiful radio, I will take pics and I will share the result, hopefully this small project become success.
Regards!
Frank Tovar
Posts: 15
Threads: 2
Joined: Oct 2017
City: Monterrey, Mexico
I hadn't shared anything because I had been busy these last days, but here we go... I got the schematics and during these last holidays I went to my hometown to visit an uncle that is electronic engineer but he was not available when i was there so I am still stuck with my radio ( still not working). Also I build a box that fits the battery section and it was made with a couple of BOSE speakers and a bluetooth amplifier, I made the box with wood and the result was not good enough. I will build it again and then if I am ok with the result I will share some pics. I got a new old radio (not philco it is NATIONAL) but it is interesting for restoration. Thanks for reading and I will continue my research to get my 46-350 work.
Frank Tovar
Posts: 7,207
Threads: 266
Joined: Dec 2009
City: Roslyn Pa
National Co from Mass?
They made a lot communications receivers from the 1920's thru the '80s
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: 15
Threads: 2
Joined: Oct 2017
City: Monterrey, Mexico
Hi,
After checking my 46-360 and diagrams from chuck I found that radio comes a little bit differences and looks like it was modified as an 48-360, so I followed the troubleshoot steps in 48-360 service documents. To test section 2 I used and old LG MP3 player as audio frequency signal generator
[Image:
http://casamadriddev.com/philco/Troubleshooting.jpg]
When I check in Test Point A I get sound with a choppy noise in the background, this sound maintains the same volume.
When I check in Test Point C I get clear music in speaker.
When I check in Testp Point D I get music with choppy speaker sound.
I am not sure if choppy sound (click) comes from C200 becasue in C point I dont get it in speaker, any thoughts ?
Also I noticed something on Z300 component with PN P32-3970 when radio is on I can see something inside that lights in red I am not sure if that is ok
any thoughts ?
Regards!
Francisco Tovar
Frank Tovar
(This post was last modified: 02-13-2018, 10:03 AM by
ftovar72.)
Posts: 15
Threads: 2
Joined: Oct 2017
City: Monterrey, Mexico
My bad it is not a light, it is a red cable that I didn't noticed before, according to trouble-shooting procedure I need to check Z301 and R300 and C302.
Updates next week
Regards!
Frank Tovar
Posts: 2,128
Threads: 18
Joined: Oct 2008
City: Merrick, Long Island, NY
These are exceptional performers, and if the cabinet is in good shape, attractive as well. I've eliminated the troublesome battery/AC switch and fixed a couple of these sets to run on AC only, eliminated the 117Z3, used a diode and dropper resistor instead to get B+ and filament string well within limits. Be careful so as not to blow out filaments!
