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

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

Model 96 volume control
#1

Hi all, I am a newby. I own a 1931 vintage lowboy with a model 96 chassis. The volume control works but only goes from medium to loud. It will not allow me to turn it down to a pleasant volume. Can the control be cleaned to fix or does it need to be replaced? I have a cool add for the radio from a 1931 Saturday Evening Post magazine .Thanks!


Attached Files Image(s)
           
#2

Hello Jonnym ,
First all I wanted to welcom you to the Philco Phorum .

As this set goes has anything been done to it recently like any new parts added ?
because if not that might be your issue anyway we would need more information .


The volume control is it scratchy sounding when turned ?

Sincerely Richard
#3

The bottom lead of the vol ctl in 96 is connected to the Center Negative through a 70K resistor (part of an RC filter).
So it is never really at zero vol, but do check that #33 resistor to be 70K or near. If it is much higher or open, the vol will remain high.
https://philcoradio.com/library/index.ph...chematics/

Also see if the potentiometer is open. If it is continuous, even 1M or so, it is OK to use. Clean it (it is a wide paper carbonized band with a brass roller as a wiper) without rubbing it with anything: just spray Deoxit F5 (Fader lube) and let dry; DO NOT use contact cleaners like Deoxit D5.

This is my 96 thread from beginning of this year.
https://philcoradio.com/phorum/showthread.php?tid=25548

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
#4

Welcome to the Phorum!
Icon_wave


...and in addition to the annotated schematic that Mike linked to there is the factory schematic info at:
https://philcoradio.com/library/download...l.%201.pdf
#5

Thanks everyone, I will pull the chassis out of the cabinet and do some checking. 
  The volume adjustment is not “scratchy”.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
1949 Motorola 5A9M
Nice job on the battery, Bob. Can the box be opened to replace the 9 volters?RodB — 11:32 AM
Philco 46-1209 strange behavior
Thank you for the detailed response MrFixr. To clarify, the hum starts when the tubes are fully warmed up, and goes a...sq65 — 09:15 AM
Philco 46-1209 strange behavior
MrFixr The chassis, if there is no ground pin in the AC plug, due to the Y-caps from L/N to the chassis, is at 60VAC re...morzh — 08:47 AM
schematics
thanks I'll try the polar caps seperatelymseno — 07:38 AM
Philco 46-1209 strange behavior
Hi SQ55, A strange issue indeed!  Just so I have you straight, on a dim bulb you get normal operation after the set warm...MrFixr55 — 12:44 AM
schematics
I think mseno is talking about cap# 27 which is a multisection but in a paper tube. In cases like that I've usually be ...klondike98 — 11:25 PM
schematics
Ohrenet  :roll: For their price I would chase a fly in a field.  :twisted:Vlad95 — 11:21 PM
1949 Motorola 5A9M
A bit more work on the Motorola. I got the repro battery together right up until I realized the snap clips on the top o...klondike98 — 10:45 PM
schematics
Often restuffed. If a twistlock, Hayseed Hamfest makes modern replacements. morzh — 09:18 PM
schematics
Looking for a multi-sectional 8+16 mfd cap. Can't find any suppliers that carry it.mseno — 08:45 PM

[-]
Who's Online
There are currently 1170 online users. [Complete List]
» 1 Member(s) | 1169 Guest(s)
Avatar

>