40-155 Unusual buzzing

Thread Rating:

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

Linear Mode

40-155 Unusual buzzing

gary rabbitt
Senior Member

Posts: 271
Threads: 12
Joined: Nov 2005
City: Nashville, TN

03-23-2006, 02:19 PM

Hi Mike,
Welcome.
Does this buzz disappear when you turn the AC plug around 180 degrees?

One set I had I did not change one cap out because it looked like a large mica. It was a bypass cap , which was still a paper/foil in a bakelite casing. CHanged it out and the buzz went away.

Have you checked the volume control for any 'opens' along it's travel. Another set I had that buzzed, not hum, and turned ot to be a break or wore down carbon inside the volume control.
Good luck.
Gary

Find

« Next Oldest | Next Newest »

Messages In This Thread

40-155 Unusual buzzing - by Guest - 03-14-2006, 12:22 PM

[No subject] - by Chuck Schwark - 03-14-2006, 01:52 PM

[No subject] - by Guest - 03-14-2006, 04:19 PM

[No subject] - by Chuck Schwark - 03-14-2006, 04:39 PM

[No subject] - by gary rabbitt - 03-23-2006, 02:19 PM

View a Printable Version

Users browsing this thread: 1 Guest(s)

Recent Posts
Philco 60 Squealing
All correct shields must be in place, all tubes correct no subs of any kind. Check any soldered, riveted ground conne...Chas — 01:24 PM
Philco 60 Squealing
I have recapped and replaced out of tolerance resistors and so on. Radio plays nicely on fairly strong stations. The pro...dconant — 10:55 AM
Philco 46-420 Code 121 Reception issues
Welcome Eric, I agree with Bob and far as the two main electrolytic filter capacitors did you change them yourself or w...radiorich — 11:43 PM
Philco 46-420 Code 121 Reception issues
You mentioned the Philco manual and going through the check points...just to be sure we're on the same page here's the m...klondike98 — 08:13 PM
Philco 42-1008 conversion kit
Interesting. I haven't seen that before.klondike98 — 07:02 PM
12' Philco
Yes I had looked for it on the web as well some time back and could not find it. I was glad to see it turned up in Ron'...klondike98 — 06:59 PM
Shadow Meter Bulb
Now if you had a set with a tuning light then the bulb type is important to the circuit, some sets used those prior to t...Arran — 04:58 PM
Shadow Meter Bulb
Ok. Thanks for the correction.RossH — 03:09 PM
Model 28L
For 28 you will probably need to buy a Hammond 125CSE. Or any of the series of the power you need, with SE suffix. Then ...morzh — 02:09 PM
37-60 revision 6
I am restoring a Philco 37-60 and it shows run 6 they removed the ground from G3 of the 6K7G and put the G3 to -2.5v for...bobbyd1200 — 01:01 PM

Who's Online

There are currently 6366 online users. [Complete List]
» 2 Member(s) | 6364 Guest(s)

Login
Username:
Password:	Lost Password?
	Remember me