Does anyone have a copy of the schematic for a Philco 38 DC set with a 1A6 tube (1936 model, according to Ramirez)? My wife's family has asked me to restore it for them (it belonged to her Grandfather who recently passed away). It's a battery set, so any good advice for building a DC power supply to make it run on AC? My bench supply will do for the repair work, but I'd like to install a compact internal DC supply so that the family can play it from time to time. Thanks in advance for the help! Doc

:Does anyone have a copy of the schematic for a Philco 38 DC set with a 1A6 tube (1936 model, according to Ramirez)? My wife's family has asked me to restore it for them (it belonged to her Grandfather who recently passed away). It's a battery set, so any good advice for building a DC power supply to make it run on AC? My bench supply will do for the repair work, but I'd like to install a compact internal DC supply so that the family can play it from time to time. Thanks in advance for the help! Doc

Yes, I have all the service info you need for your set. See the SCHEMATIC INFO page on my site to order a photocopy set from *original* Philco service bulletins.

The Philco Repair Bench at:
www.philcorepairbench.com

Regards,

Chuck

Any advice on the best way to build a DC power supply for the set to convert it to AC? I've restored a number of sets to date, with significant help from this forum (especially Norm), and I appreciate the benefit of the collective experience found here.

I was surprised that the Ryder's pages on the site included the tube layout, parts pricing, and alignment instructions, but didn't include the actual schematic for the set. If anyone can send me a copy, I'd appreciate it.

What a great service this site is to the radio community! Thanks, everyone!

Doc

Hi,
You can still run it for quite some time on 3 "D" cells wired in parallel and 10 "9volt" batteries stacked in series. The "C" voltage can be improvised, or the "C-" can be grounded in some cases. If there is a chnce a small child might get their hands inside the radio, this would be one of the safest methods.

Otherwise, the basic approaches used below are also a way of doing it- but some can leave the radio with a "hot chassis".

http://antiqueradio.org/art/bsupply01.gif
http://antiqueradios.com/chrs/journal/asupply.html
http://antiqueradios.com/chrs/journal/bsupply.html
http://antiqueradio.org/art/bsupply01.gif
http://antiqueradio.org/bsupply.htm
http://antiqueradio.org/art/cv1201.gif
http://antiqueradio.org/art/cv1202.gif

:Any advice on the best way to build a DC power supply for the set to convert it to AC? I've restored a number of sets to date, with significant help from this forum (especially Norm), and I appreciate the benefit of the collective experience found here.
:
:I was surprised that the Ryder's pages on the site included the tube layout, parts pricing, and alignment instructions, but didn't include the actual schematic for the set. If anyone can send me a copy, I'd appreciate it.
:
:What a great service this site is to the radio community! Thanks, everyone!
:
:Doc
:

Thanks, John.

What a great and thorough response. Since I wasn't able to get the radio restored in time for Christmas, I'll have more time to tinker with it. I'll take a look at the links you've provided and update the forum on my progress.

Thanks again for the great information!

Doc