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

40-180 Voltage High
#4

In many cases the voltages can be 20% higher than shown on the schematic. If voltages are well past 20%, then would suspect the audio output stage is not drawing much current. Schematic shows 180V on the plates of the 41 output tubes. What do read for the plate voltage on the 41 tubes? Check voltage on the 41 control grids, would expect about -15 volts.


Messages In This Thread
40-180 Voltage High - by Bruce C - 03-29-2010, 04:20 PM
Re: 40-180 Voltage High - by DeckApe - 03-30-2010, 08:36 AM
Re: 40-180 Voltage High - by Bruce C - 03-30-2010, 09:48 AM
Re: 40-180 Voltage High - by rghines1 - 03-30-2010, 04:48 PM
Re: 40-180 Voltage High - by Bruce C - 03-30-2010, 06:18 PM
Re: 40-180 Voltage High - by rghines1 - 03-31-2010, 03:58 PM
Re: 40-180 Voltage High - by Bruce C - 03-31-2010, 09:32 PM
Re: 40-180 Voltage High - by Bruce C - 04-04-2010, 06:16 PM
Re: 40-180 Voltage High - by rghines1 - 04-05-2010, 07:47 AM
Re: 40-180 Voltage High - by Bruce C - 04-05-2010, 06:34 PM
Re: 40-180 Voltage High - by exray - 04-05-2010, 09:40 PM
Re: 40-180 Voltage High - by Raleigh - 04-05-2010, 09:59 PM
Re: 40-180 Voltage High - by exray - 04-05-2010, 10:26 PM
Re: 40-180 Voltage High - by codefox1 - 04-06-2010, 01:12 PM
Re: 40-180 Voltage High - by Bruce C - 04-06-2010, 04:08 PM
Re: 40-180 Voltage High - by Bruce C - 04-20-2010, 04:47 PM
Re: 40-180 Voltage High - by Bruce C - 04-26-2010, 04:36 PM
Re: 40-180 Voltage High - by Ron Ramirez - 04-26-2010, 04:51 PM
Re: 40-180 Voltage High - by denver - 04-26-2010, 06:28 PM
Re: 40-180 Voltage High - by Bruce C - 04-30-2010, 12:35 PM
Re: 40-180 Voltage High - by exray - 05-01-2010, 01:36 AM
Re: 40-180 Voltage High - by Bruce C - 05-07-2010, 10:03 AM
Re: 40-180 Voltage High - by codefox1 - 05-08-2010, 09:45 AM
Re: 40-180 Voltage High - by Raleigh - 05-12-2010, 01:09 PM
Re: 40-180 Voltage High - by Bruce C - 05-12-2010, 07:06 PM
Re: 40-180 Voltage High - by Bruce C - 05-12-2010, 07:06 PM
Re: 40-180 Voltage High - by Bruce C - 05-12-2010, 07:06 PM



Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
42-345, question for an owner
+1 for number 4 with an added theorem: The more connections in a circuit the higher the possibility of failure.RodB — 12:17 PM
Help with Readrite 410 tube tester
IMHO, Between the transformer common (where you have one lead) and any point on the rotary switch, you should be reading...MrFixr55 — 11:53 AM
Help with Readrite 410 tube tester
This is such a simple looking schematic yet its throwing me off and driving my Fluke DMM crazy. I cant get real voltage ...daveone23 — 11:23 AM
42-345, question for an owner
Rod :lol: 1. The schematic always work according to the wiring. 2. If the schematic does not work according to the wir...morzh — 10:36 AM
42-345, question for an owner
Wow Mike, that's profound! That should be the Phorum motto.RodB — 09:49 AM
Philco 269 - 444 FIVE VALVE VERSION?
Hi Chas, I hear you. If you happen to be passing NYC vs Philly, I can give it a good home also. @ RadioRoslyn, T...MrFixr55 — 09:25 AM
Bakelite crack repair - what is best epoxy?
I'm with Arran, but I use even stronger epoxy with a 72 hour cure. It is sold to knife makers for bonding wooden handles...DaleHCook — 08:47 AM
42-345, question for an owner
It cannot be wired correctly and work incorrectly. It is as simple as this: if you want to have you treble up and bas...morzh — 08:33 AM
42-345, question for an owner
Welcome to the Phorum, Noel! I don't have that radio, but I'm sure others will jump in with help. Take care and BE HEA...GarySP — 07:52 AM
42-345, question for an owner
Hello,      I am working on a Philco 42-345.  It appears that there have been many hands inside this radio before me....UpNorth — 07:42 AM

[-]
Who's Online
There are currently 3899 online users. [Complete List]
» 1 Member(s) | 3898 Guest(s)
Avatar

>