01-03-2022, 07:14 PM
1. measured 17.96K to pin 7 with tube out.
2. Confirmed the only four items attached to pin 7 are the 470K, 680K, C27 and C6.
3. I started disconnecting everything from pin 7 back. When I got to the 15K resistor (item 53) and removed the connection the resistance at pin 7 continually increases.
So when I disconnect the 15K (#53) and the 5mfd (8C - using 8 mfd) and the lead the goes from the 4700K (#52) to items 33 and 34
i have no resistance at pin 7 .
When i reconnect 8C and the line to 33 and 34 the resistance continually increase. as soon as i reconnect #53 and get the 18K resistance.
One question I have is I was looking at the 18K is a resistance that was to low compared the the spec at 700K
All of the above was done with the speaker socket unplugged.
Thanks for the help. Time to watch the NY Rangers play
2. Confirmed the only four items attached to pin 7 are the 470K, 680K, C27 and C6.
3. I started disconnecting everything from pin 7 back. When I got to the 15K resistor (item 53) and removed the connection the resistance at pin 7 continually increases.
So when I disconnect the 15K (#53) and the 5mfd (8C - using 8 mfd) and the lead the goes from the 4700K (#52) to items 33 and 34
i have no resistance at pin 7 .
When i reconnect 8C and the line to 33 and 34 the resistance continually increase. as soon as i reconnect #53 and get the 18K resistance.
One question I have is I was looking at the 18K is a resistance that was to low compared the the spec at 700K
All of the above was done with the speaker socket unplugged.
Thanks for the help. Time to watch the NY Rangers play
