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

GILFILLAN 66AM 66DM
#10

instead of 60vdc high they are 40vdc. T3 that drives the speaker appears to be bad.

#1 6SK7 pin 6: 98vdc Pin 8: 263vdc
#2 6SA7 pin 3: 264vdc pin4: 98 vdc pin 8: -.8
#3 6SK7 pin 6: 95.5vdc Pin 8: 262vdc
#4 6SO7 pin 6 111vdc
#5 6V6 pin3 261vdc pin4: 261vdc pin8: 31.5
#6 6X5 pin3 341vac pin 5: 341vac pin 8: 270vdc

I have injected audio into 6V6 sounds good
I have injected audio into 6QS7 sounds good higher than 6V6
I have tuned the radio as per description.
Tone control seems sensitive.
I have to turn the volume up to max to get any radio station.
Lots of noise on the high end of the dial from mid range. Radio appears to be over driven.

ANNOYING 60Hz HUM gone

I'll be removing T3 from the circuit to be sure next.

I put the voltages i thought would be of interest. The others are about -.2 to -.6 volts high. I will provide complete voltage and resistance sometime this week.


Messages In This Thread
GILFILLAN 66AM 66DM - by Bradley Rush - 05-24-2012, 02:05 AM
RE: GILFILLAN 66AM 66DM - by morzh - 05-24-2012, 08:26 AM
RE: GILFILLAN 66AM 66DM - by Arran - 05-24-2012, 08:03 PM
RE: GILFILLAN 66AM 66DM - by Bradley Rush - 05-28-2012, 02:52 PM
RE: GILFILLAN 66AM 66DM - by morzh - 05-28-2012, 06:55 PM
RE: GILFILLAN 66AM 66DM - by Bradley Rush - 05-29-2012, 12:29 AM
RE: GILFILLAN 66AM 66DM - by Bradley Rush - 05-31-2012, 01:03 PM
RE: GILFILLAN 66AM 66DM - by Bradley Rush - 06-03-2012, 04:24 AM
RE: GILFILLAN 66AM 66DM - by morzh - 06-03-2012, 10:07 AM
RE: GILFILLAN 66AM 66DM - by Bradley Rush - 06-03-2012, 10:07 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.

>