1. The PHILCO Phorum
  2. Various and Sundry Categories
  3. Other Radios (Non-Philco)
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
#4

01-02-2022, 06:33 PM
Something definitely wrong with the circuit connected to pin 7. Are you measuring 18K to ground with the 6AT6 out of the socket? 

There should be only four things connected to pin 7: the 470K, the 680K, the C27 .05 uF, and the 150 pF C6. Disconnect each of these in turn and see which is causing the 18K reading to ground. 

Wired as per the schematic with good components there is no way to get an 18K resistance reading to ground unless there is a short somewhere.
Find
« Next Oldest | Next Newest »


Messages In This Thread
Westinghouse H-104A - Low Volume - by Masonparker - 01-02-2022, 11:17 AM
RE: Westinghouse H-104A - Low Volume - by Mondial - 01-02-2022, 12:13 PM
RE: Westinghouse H-104A - Low Volume - by Mondial - 01-02-2022, 06:33 PM
RE: Westinghouse H-104A - Low Volume - by Mondial - 01-03-2022, 08:54 PM
RE: Westinghouse H-104A - Low Volume - by Mondial - 01-04-2022, 09:52 PM
RE: Westinghouse H-104A - Low Volume - by David - 01-08-2022, 03:40 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Cannot Adjust an IF Transformer’s cores
Outstanding work indeed. I wish I could come up with solutions like this.slford310 — 11:16 PM
Cannot Adjust an IF Transformer’s cores
The abilities of our 'Phorum Pholks" never ceases to amaze me! Fantastic fabrication, Joseph! I'm waiting now for...GarySP — 08:27 PM
PT-6 antenna connections
Thanks. I never realized that was a notch noted in the schematic as described. I’ll recheck my wiring.bridkarl — 08:13 PM
Cannot Adjust an IF Transformer’s cores
Thank you! I was quite new to the Phorum when I started this post, so I feel like it might be advantageous to publish a ...jrblasde — 08:07 PM
PT-6 antenna connections
Notice in the schematic the notch at the bottom of the antenna coil is between pins 3 & 4. Yes, pin 6 of the 7C6 is...RodB — 07:34 PM
bridkarl
I have two PT-6 chassis. On both there is a blue wire that runs from the above chassis transformer to pin 6 of 7C6. So t...bridkarl — 07:23 PM
Cannot Adjust an IF Transformer’s cores
Joseph, now you are an engineer!!RodB — 06:37 PM
PT-6 antenna connections
Hi, reading your explanation I can see the confusion. If you take it one connection at a time it should result in a desi...RodB — 06:34 PM
Cannot Adjust an IF Transformer’s cores
It works! I received the PCBs this morning in the mail, and put everything together. I reused the base from the original...jrblasde — 04:32 PM
PT-6 antenna connections
I seem to have lost my way on this PT-6. I see the antenna aerial transformer schematic - I’m reading pins 1 through ...bridkarl — 12:30 PM

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

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