Hum after recap (40-160)

Thread Rating:

0 Vote(s) - 0 Average
1
2
3
4
5

Linear Mode

Hum after recap (40-160)

Radioroslyn
Phorum Expert

Posts: 7,286
Threads: 268
Joined: Dec 2009
City: Roslyn Pa

05-20-2016, 12:06 PM

http://www.nostalgiaair.org/pagesbymodel...013333.pdf

Note that only one of the filter caps - side is connected to the chassis.The other two go back to the ct of the power transformer. If that is OK then try removing tube till the hum goes away. Removing the 84 will kill all sounds. You may have a bad tube with a grid to cathode short. Just for grins try disconnecting one side of 46 the cap across the field coil see if that helps.

Terry

(This post was last modified: 05-20-2016, 12:09 PM by Radioroslyn.)

Find

« Next Oldest | Next Newest »

Messages In This Thread

Hum after recap (40-160) - by Stan the Man - 05-20-2016, 11:39 AM

RE: Hum after recap (40-160) - by Radioroslyn - 05-20-2016, 12:06 PM

RE: Hum after recap (40-160) - by Radioroslyn - 05-20-2016, 12:18 PM

RE: Hum after recap (40-160) - by Stan the Man - 05-20-2016, 01:05 PM

RE: Hum after recap (40-160) - by Radioroslyn - 05-20-2016, 01:28 PM

RE: Hum after recap (40-160) - by Stan the Man - 05-20-2016, 06:07 PM

RE: Hum after recap (40-160) - by Stan the Man - 05-22-2016, 08:14 PM

View a Printable Version

Users browsing this thread: 2 Guest(s)

Recent Posts
Philco 42-390, code 121 speaker
#87 on the schematic. This radio had a 8" Zenith speaker attached to it when I got it. I do don't know the hist...Stevelog — 06:39 PM
Philco 60 Squealing
I'm pretty sure I now have the litz wire soldered. This did not make any difference. Back in April I rewound the seconda...dconant — 06:25 PM
Philco 38-7 Speaker
Just to make sure, you chose either 4 ohm into 5K or into 10K? (blk-org or blk-grn)morzh — 06:23 PM
Philco 38-7 Speaker
I have let this one sit because of other duties. Now I am back, and I have a couple of questions. I hooked up a Hammond ...tludka — 05:34 PM
Philco 42-390, code 121 speaker
>>A closer examination of the very small print schematic indicates that the speaker is a PM type. This shows a ...morzh — 05:18 PM
Philco 60 Squealing
Litz is typically tinned by simply rubbing it with the soldering iron tip while immersed in solder (and a bit of rosin f...morzh — 05:14 PM
Philco 6K7
The suppressor grid (if by G3 you mean the S) is usually at the Cathode potential, which in this caes is GND. I am not ...morzh — 05:10 PM
Philco 16B Parts
Thanks for the reply. Unfortunately the radio was removed before bidding was over so I didn't get a chance to bid.dconant — 04:10 PM
Philco 16B Parts
Hi Dan, Mike is correct, there's a lot of painted stuff on the chassis but it looks pretty good. The sm is all there,sp...Radioroslyn — 03:50 PM
1930s Stromberg-Carlson Tombstone Radio need help identifying model number
Hi Cap'n Clock, Unfortunately, I do not have this radio. This is a shame because this should be a good performer. 2A...captainclock1988 — 03:43 PM

Who's Online

There are currently 3042 online users. [Complete List]
» 1 Member(s) | 3041 Guest(s)

Login
Username:
Password:	Lost Password?
	Remember me