Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

old radio philco 3985
#1

I have a radio philco 3985, I want to fix it but I dont know what kind of battery they use and where can I find . Please, I need somebody to help me.
jaimepaz16
#2

Think you meant model 39-85, the 39 indicating year 1939.

Below is the schematic link. Uses 2 batteries, 1.5V high current for the filaments and 90V low current for the plates. However the batteries are obsolete but a 1.5V D cell and 10 transistor batteries wired in series will work assuming they will fit inside the radio. Richard

http://www.nostalgiaair.org/PagesByModel...013312.pdf
#3

Just be sure you connect the batteries to the right plugs. They appear similar on that schematic. 90V mistakenly connected to the tube filaments will fry the tubes instantly. I have a lot of battery sets using modern equivalent batteries that I build myself, as described. If you are unsure how to connect them, feel free to contact me by email and I can supply some pictures of how it is done. I can then post them on this thread for others, but I have so much stuff I need to know specifically what you need so you do not go into information overload.

Ron Mc/
#4

Here are some pictures of mine and some I found on the net that show examples of 1.5/90V combination A-B batteries.
[Image: http://i75.photobucket.com/albums/i305/m...pboard.jpg]
Note that they use several 1.5 batteries connected in parallel (all the plus ends connected together and all the negative ends connected together) so that the useful lives of the A battery and B battery will be nearer the same. The voltage is still 1.5 volts, but the amp hours add together.

Ron Mc/




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
trying to identify this wire type
Thanks to all for the feedback. As Arran said, it is probably an older replacement and yes it has a grid cap so I will ...georgetownjohn — 09:32 PM
trying to identify this wire type
It's possible that the red wire, actually a grid cap lead, is a very old replacement, I can't remember seeing a pre 1939...Arran — 09:18 PM
Gilfillan Brothers Car Radio?
Hi everyone,  Special thanks to Joe Rossi for tracking down this obscure radio and thanks to others who took up the hun...Antipodal — 08:15 PM
trying to identify this wire type
Here's one source for your wire of many. Take care and BE HEALTHY! Gary P.S. Can't get the right color you need? I ...GarySP — 06:40 PM
trying to identify this wire type
...and modern wire of the appropriate gauges and insulation V-rating (300V minimum, usually shown right on the wire) is ...morzh — 05:47 PM
1930s Stromberg-Carlson Tombstone Radio need help identifying model number
I have a question about this radio, is there anyone that has access to this radio that has an intact unmolested speaker ...captainclock1988 — 04:28 PM
1930s Stromberg-Carlson Tombstone Radio need help identifying model number
Well what makes me confuse all of those companies is that all three of those companies (Setchell-Carlson, Stromberg-Carl...captainclock1988 — 04:21 PM
trying to identify this wire type
The red wire is rubber covered wire. The others are cotton braid over rubber often in colors or a tracer, also strand...Chas — 02:43 PM
trying to identify this wire type
Greetings Phorum members, Hope you can help me identify this type of wire in the photo I have attached.  I am not sure ...georgetownjohn — 01:53 PM
Philco 60 Squealing
All correct shields must be in place, all tubes correct no subs of any kind. Check any soldered, riveted ground conne...Chas — 01:24 PM

[-]
Who's Online
There are currently 4215 online users. [Complete List]
» 3 Member(s) | 4212 Guest(s)
AvatarAvatarAvatar

>