Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

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

Philco 46-1203 Turntable Question
#1

Hi

Turn table question. The three wires to the record cartridge, black, red and a braided shield around the wires. The braided shield is not connected to anything and seems as if it should be soldered to something. What is your advise. Thanks.

God bless,

Dave b.

(subject edited by site admin to eliminate confusion)
#2

Hi,

The red wire would be the "signal" or "hot" lead, the black would be "common", (sometimes referred to as ground) and the braid
is often "grounded" to the chassis / frame at the end going into
the radio/amplifier.
Sometimes the braid is left unconnected at the cartridge end.
Just need to be sure it doesn't touch the red wire/terminal or
it will just kill (short out) the cartridge signal. It is also possible
that it could be conneted to the arm itself if metal or in some
cases may also be connected to the black wire or terminal altho
least likely. It mainly acts as a "shield" to reduce or eliminate
pickup by the hot wire of stray signals or noise that would cause
interference in the sound.
Again, since I am new to some of the methods used "way-back",
I'm not totally sure and someone else may have a better answer
for you. The main point is that initially it won't matter if the braid
is not connected at the cartridge end. If things work with good
volume but you have some other noise or hum with it, then the
braid may need to be just connected to the black or metal of
the arm. Hope this helps!
Best regards,
Harlan
#3

Ditto what Harlan said. The shield should be connected to ground inside the radio chassis itself.

--
Ron Ramirez
Ferdinand IN




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
New find. 91X code 225
Thanks all. To be honest I don’t know what to make of it being in this cabinet style but I like it a lot. I specifically...pdieten — 12:47 PM
New find. 91X code 225
Nice grab! It appears to be a 19X cabinet. This wasn't unusual. Philco often retrofitted to other cabinets as invento...GarySP — 12:32 PM
1949 Motorola 5A9M
I would certainly write down step-by-step the progression of disassembly of the works, and probably cuss out the electri...GarySP — 12:18 PM
New find. 91X code 225
Nice looking! This annotated schematic from our library shows parts that are slightly different in the early and later ...klondike98 — 11:33 AM
1949 Motorola 5A9M
LOL!! Well Arran, if you do dive into it and come across any advice on dealing with accessing components let me know. I...klondike98 — 11:56 PM
1949 Motorola 5A9M
Bob and Gary; I have the further complication on the Phillips that they decided to use some 200 volt rated paper caps...Arran — 10:05 PM
1949 Motorola 5A9M
Thx Arran & Gary. Yes its super crowded in the chassis and I've debated whether to try to restuff caps or not. I t...klondike98 — 07:40 PM
1949 Motorola 5A9M
That's got to be one of the tightest conglomeration of components I've ever seen! I wonder how the line workers felt bu...GarySP — 05:46 PM
1949 Motorola 5A9M
Bob; I think that the Phillips was actually manufactured in Canada, though they may have imported many of the compone...Arran — 02:28 PM
1949 Motorola 5A9M
I've started replacing the electrolytic caps now. As Arran mentioned, they are housed under a metal strap. Here's a ph...klondike98 — 12:22 PM

[-]
Who's Online
There are currently 1135 online users. [Complete List]
» 1 Member(s) | 1134 Guest(s)
Avatar

>