1. The PHILCO Phorum
  2. Various and Sundry Categories
  3. Other Radios (Non-Philco)

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

Linear Mode
Westinghouse H-104A - Low Volume
Mondial
Phorum Expert
*****
Posts: 1,114
Threads: 14
Joined: Feb 2013
City: Irvington, NY
#2

01-02-2022, 01:13 PM
The voltages of the 6AT6 tube don't make sense. If the plate voltage is 250 V, there that means either the tube is not conducting current which it should given the other pin voltages, or the plate resistor is the wrong value.

Did you replace the resistor connected to the plate pin 7 and if so is it the correct value? Should be 470 K? What is the voltage measured across the plate resistor?

Check the circuitry around the 6AT6 and the tube itself which also could be bad.
Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
Westinghouse H-104A - Low Volume - by Masonparker - 01-02-2022, 12:17 PM
RE: Westinghouse H-104A - Low Volume - by Mondial - 01-02-2022, 01:13 PM
RE: Westinghouse H-104A - Low Volume - by Mondial - 01-02-2022, 07:33 PM
RE: Westinghouse H-104A - Low Volume - by Mondial - 01-03-2022, 09:54 PM
RE: Westinghouse H-104A - Low Volume - by Mondial - 01-04-2022, 10:52 PM
RE: Westinghouse H-104A - Low Volume - by David - 01-08-2022, 04:40 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
PT 6 chassis screws size???
Hello bridKarl, that sounds right or maybe 8/32 . Sincerely Richardradiorich — 01:00 AM
PT 6 chassis screws size???
Have this done except for missing chassis screws. It looks like 1 inch 6/32 sheet metal screw may work but can anyone s...bridkarl — 10:32 PM
Philco model 38 code 121 not receiving signal.
Hello Stormlord, Well done on rewinding that coil it turned fairly good for your first one. Sincerely Richardradiorich — 09:12 PM
Philco model 38 code 121 not receiving signal.
Well here it is. It ain't pretty, but hopefully it'll work. I checked it with my DMM on continuity and it keeps and r...Stormlord5500 — 08:56 PM
Philco 42-345 Restoration/Repair
Yes, 57 is an electrolytic cap that should be 12 mfd 400 volts according to the parts list from the Phorum library schem...RodB — 06:01 PM
Philco 42-345 Restoration/Repair
Looks like if I am reading it correctly it looks like the silver capacitor#57 that appears to be a replacement is of a l...osanders0311 — 05:09 PM
Philco model 38 code 121 not receiving signal.
Thanks Arran. Yeah this plastic is pretty thin. It's a little thinner than the original stuff. It kinda reminds me of p...Stormlord5500 — 04:37 PM
Testing a speaker and output transformer Trutone A2-G
The equivalent of one short turn is basically the same as that of a shorted load. If it is the primary's turn, then the ...morzh — 03:53 PM
Testing a speaker and output transformer Trutone A2-G
I've never had an output transformer become shorted, the failure mode is usually an open primary, or in a center tapped ...Arran — 03:52 PM
Philco model 38 code 121 not receiving signal.
As long as the plastic sheeting isn't too thick, I think that the thickness of photographic film would be just about rig...Arran — 03:19 PM

[-]
Who's Online
There are currently no members online.

>
  1. The PHILCO Phorum
  2. Various and Sundry Categories
  3. Other Radios (Non-Philco)