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

77 low volume
#3

Hi Chuck, Thanks for the reply. #2 from volume center tap to gnd. 20.9 ohms, gnd. to tab for coil #5- 6.2ohms. Coil #5 center tap 6.2 and 6.1 ohms. Coil #9- 45.7, 6.3, 1.5 ohms. Coil #10- 48.5, 6.2, 1.5 ohms. B+ voltage on plates 154. All capacitors and out of tolerance resistors were replaced. Also before replacing anything there was a wire bridge on the bc resistor connecting H & J. I removed it since I could not find it on any schematics or updates. The resistor tests good between H & J 2,054ohms. specs. 2,000 ohms. Also a 24k dog bone resistor was in parallel with resistor #12 a 100k. I also remove it. Both seem to have been added a while back. Thanks, Richard


Messages In This Thread
77 low volume - by rjm - 02-15-2006, 01:46 AM
[No subject] - by Chuck Schwark - 02-15-2006, 09:59 AM
[No subject] - by rjm - 02-15-2006, 02:17 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 42-345 Restoration/Repair
RodB :beerchug:Vlad95 — 10:22 AM
Philco 42-345 Restoration/Repair
Vlad, you nailed it. Swiss and German roots.RodB — 09:54 AM
5U4 vs 5Z4 tubes
Well this is a Hallicrafters SX/9 circa 1936. No real issues so far although I dodged a real bullet with a cap that was...bridkarl — 07:59 AM
5U4 vs 5Z4 tubes
The pinout is the same but the 5U4 has a 3 amp filament, verses 2 amps or less on the 5Z4. I think that the pinout of a ...Arran — 12:04 AM
Philco 42-345 Restoration/Repair
By the way. osanders0311 Take a look here: Dial cord stringing Guides May be here you can fount correct string settin...Vlad95 — 11:15 PM
5U4 vs 5Z4 tubes
5U4 and 5Z4 almost identical. I think nothing happened if you left 5U4 instedad 5Z4 long time. Just heater current 5U4 ...Vlad95 — 11:02 PM
Philco 42-345 Restoration/Repair
Hello Vlad95 , Very Funny ! Sincerely Richardradiorich — 11:01 PM
Philco 42-345 Restoration/Repair
RodB You are European yourself   :evil: I'm Canadian for the last 30 years  :snowman: But not Yankee  :lol: Vlad95 — 10:49 PM
Philco 42-345 Restoration/Repair
The band switch selects different oscillator coils for the band selected. I would look for a bad connection in the switc...RodB — 10:31 PM
Philco 42-345 Restoration/Repair
Hang in there...PaulPaul Philco322 — 09:30 PM

[-]
Who's Online
There are currently 1017 online users. [Complete List]
» 2 Member(s) | 1015 Guest(s)
AvatarAvatar

>