Need help on 40-180 chassis

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Need help on 40-180 chassis

BillT52
Junior Member

Posts: 17
Threads: 3
Joined: May 2019
City: Cincinnati State, Province, Country: Ohio

06-06-2019, 08:45 AM

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?

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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

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