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

Need help on 40-180 chassis
#1

Trying to restore a 40-180 for a friend. Recapped and checked resistors and replaced a few. Speaker was missing so I found a comparable Philco speaker same size but different part number. Checked it on another Philco 46-480 and it sounds great so I know it's good. Output trans was bad so replaced with another within 10 ohms of the original on the primary. So when powered up all tubes light and pin voltages are close so all seems to be well, but all I get is a low hum from the speaker and a very weak signal which appears to be coming out of the output trans which is strange to me. I did the 2nd radio oscillator test and got a loud squeal so I believe the oscillator is good.So at a loss right now on where to look. Any suggestions?


Messages In This Thread
Need help on 40-180 chassis - by BillT52 - 06-06-2019, 08:45 AM
RE: Need help on 40-180 chassis - by morzh - 06-06-2019, 11:11 AM
RE: Need help on 40-180 chassis - by klondike98 - 06-06-2019, 12:18 PM
RE: Need help on 40-180 chassis - by LarryFS - 06-06-2019, 01:12 PM
RE: Need help on 40-180 chassis - by morzh - 06-06-2019, 02:21 PM
RE: Need help on 40-180 chassis - by BillT52 - 06-06-2019, 02:54 PM
RE: Need help on 40-180 chassis - by LarryFS - 06-06-2019, 06:03 PM
RE: Need help on 40-180 chassis - by morzh - 06-06-2019, 08:40 PM
RE: Need help on 40-180 chassis - by madsowry - 06-06-2019, 09:26 PM
RE: Need help on 40-180 chassis - by morzh - 06-06-2019, 09:56 PM
RE: Need help on 40-180 chassis - by BillT52 - 06-07-2019, 09:06 AM
RE: Need help on 40-180 chassis - by morzh - 06-07-2019, 09:54 AM
RE: Need help on 40-180 chassis - by BillT52 - 06-07-2019, 10:30 AM
RE: Need help on 40-180 chassis - by morzh - 06-07-2019, 10:39 AM
RE: Need help on 40-180 chassis - by BillT52 - 06-07-2019, 04:04 PM
RE: Need help on 40-180 chassis - by BillT52 - 06-07-2019, 05:42 PM
RE: Need help on 40-180 chassis - by morzh - 06-07-2019, 09:23 PM
RE: Need help on 40-180 chassis - by BillT52 - 06-07-2019, 10:29 PM
RE: Need help on 40-180 chassis - by morzh - 06-07-2019, 11:00 PM
RE: Need help on 40-180 chassis - by BillT52 - 06-08-2019, 06:54 AM
RE: Need help on 40-180 chassis - by Radioroslyn - 06-08-2019, 10:47 AM
RE: Need help on 40-180 chassis - by morzh - 06-08-2019, 11:06 AM
RE: Need help on 40-180 chassis - by BillT52 - 06-08-2019, 12:37 PM
RE: Need help on 40-180 chassis - by Radioroslyn - 06-08-2019, 01:24 PM
RE: Need help on 40-180 chassis - by morzh - 06-08-2019, 02:44 PM
RE: Need help on 40-180 chassis - by Radioroslyn - 06-08-2019, 07:06 PM
RE: Need help on 40-180 chassis - by BillT52 - 06-25-2019, 11:36 PM



Users browsing this thread: 6 Guest(s)
[-]
Recent Posts
Shadow Meter Bulb
Not sure if anyone has tried this but there are 6.3 volt miniature lamps in bayonet and screw-in base options available ...GarySP — 11:31 AM
Shadow Meter Bulb
Any 6.3 volt pilot light will work. I would use the brightest one I could find in my workroom. Be sure the dial is clean...RodB — 10:45 AM
HiFi (Chifi) tube amp build - but my own design.
Tim, nice write up and thanks for sharing !! Sincerely Richardradiorich — 02:47 AM
HiFi (Chifi) tube amp build - but my own design.
Well, this was a real "Hum-Dinger" :lol: ! This will be kinda long, but hopefully it will help others having t...TV MAN — 01:55 AM
Shadow Meter Bulb
Phorum members, I am trying to find the bulb # for PHILCO Shadow Meter part number 45-2180 that is from a 37-640 chassis...georgetownjohn — 06:53 PM
Philco 41-608 changer coupler
3D-printing...short of machining, of course. Or molding.morzh — 05:20 PM
Philco 41-608 changer coupler
Thanks, Morzh. That solves the issue of the rubber pieces. Now, I need to find a way to replicate the pot metal piec...alangard — 05:07 PM
12' Philco
If it is 12', either Kareem or Andre would have to jump pretty high to look at the front panel. Kareem would have an e...morzh — 01:48 PM
12' Philco
And here's a story about the tires on the truck. Same "no-stoop" guy must have installed these! Take care a...GarySP — 01:17 PM
Hickok AC51 tube tester
I think they have only shown the secondaries of the transformer. Two of them feed the rectifiers' filaments.morzh — 12:58 PM

[-]
Who's Online
There are currently 7585 online users. [Complete List]
» 1 Member(s) | 7584 Guest(s)
Avatar

>