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 19-126 tone control
#1

Hi Folks.  I got my 19 electronically restored but I have one little hiccup.  The tone control is a 4 position switch that is coupled between the output tube and the volume control tap.  Now position 1,2 and 4 are fine but in position 3 I get a nasty squeal when the volume is up past about one third. Has anyone else experienced this?


Attached Files Image(s)
   

Happiness is a warm glowing radio!
#2

Seem like the .006 inside 33 isn't doing it's job. Check it or you can connect a .001-.005 across it this should take care of the squeal. You could try swapping the 42 and the 75 with know good ones that may do it too.

Terry
#3

Thanks. I will look into it. I replaced all the caps but I may have miswired that one... It is such a bear to remove that control!

Happiness is a warm glowing radio!
#4

I'd just check wiring on the switch wouldn't necessarily take it out to do it.

Terry
#5

I did just that, Terry. Thanks. I disconnected the wire from the plate of the 42 going to the tone control, and put an .005 in its place. Now the radio seems to work fine!!

Happiness is a warm glowing radio!




Users browsing this thread:
[-]
Recent Posts
Zenith H725
I just remembered, I have some hi temp silicone rubber material which could do the trick. Or a piece of FR4 laminate. Th...EdHolland — 08:39 PM
Zenith H725
The PSU filter cap arrived today (thank you USPS!) so I will work on that later. Meanwhile, I have the dial, speaker...EdHolland — 06:42 PM
Philco 610B oscillator wiring
Thanks Terry. After checking my notes I think I recorded about -10v at the 6A7 G4/control grid. The screen grid (G3 &...Tubester — 05:59 PM
The list of my radio & TV collection!
Magical chords of forgotten melodies, old nostalgic music on an old radio... Saturday night blues on the Mid-Waves on an...RadioSvit — 12:20 PM
Philco 42-345 Restoration/Repair
Thank you MrFixr55 the issue with this radio is that the internal coil antenna is missing and there was a wire in its pl...osanders0311 — 11:34 AM
Philco 610B oscillator wiring
Regarding the oscillator circuit which is comprised of the 6A7's cathode, control grid, and screen grid. These elements ...Radioroslyn — 10:33 AM
Philco 42-345 Restoration/Repair
Hi OSanders, First off, welcome to the Philco Phorum where Phine Phamily-Phriendly Pholks Phull of Philco Phacts and P...MrFixr55 — 08:41 AM
Philco 42-345 Restoration/Repair
Today I've been reading through the site trying to learn more about this radio. I also soldered the lose power cord cabl...osanders0311 — 08:24 PM
Philco 610B oscillator wiring
Thanks David! I do have that same later prodution model 610 schematic. I've also studied the Philco service bulletins fo...Tubester — 08:12 PM
Philco 610B oscillator wiring
Some info from Beitmans says late production. David   David — 06:06 PM

[-]
Who's Online
There are currently 2393 online users. [Complete List]
» 2 Member(s) | 2391 Guest(s)
AvatarAvatar

>