Replaced the capacitors but all I get is a hum

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

Linear Mode

Replaced the capacitors but all I get is a hum

morzh
Odobenus rosmarus

Posts: 16,582
Threads: 574
Joined: Oct 2011
City: Jackson State, Province, Country: NJ

#30

11-06-2013, 10:07 PM

Andy

Multiple times I came across this: an old resistor will not measure correctly on the multimeter.
The reason happened to be oxidation on the resistors' leads and solder: there were no connection. It took some pressing and rubbing the leads with the meter's probes' pointed ends to be able to see the resistance.

In your case, as Jerry has suggested, first use a known good resistor to make sure your meter is working although to me you only have to put the leads together and see 0.2 - 0.3 (or close ) Ohm resistance measured, that to me would validate the meter. In case you have no resistors available.

Now, I hope the question does not offend you, but: you do understand that you always measure resistance with the power OFF and NEVER EVER do it with the power ON. Right?

Find

« Next Oldest | Next Newest »

Thread Closed

Messages In This Thread

Replaced the capacitors but all I get is a hum - by Andrew Fleck - 11-01-2013, 09:17 PM

RE: Replaced the capacitors but all I get is a hum - by Warren - 11-01-2013, 11:56 PM

RE: Replaced the capacitors but all I get is a hum - by morzh - 11-02-2013, 11:20 AM

RE: Replaced the capacitors but all I get is a hum - by klondike98 - 11-02-2013, 05:38 PM

RE: Replaced the capacitors but all I get is a hum - by Andrew Fleck - 11-02-2013, 07:18 PM

RE: Replaced the capacitors but all I get is a hum - by jerryhawthorne - 11-02-2013, 08:36 PM

RE: Replaced the capacitors but all I get is a hum - by Andrew Fleck - 11-02-2013, 09:27 PM

RE: Replaced the capacitors but all I get is a hum - by Ron Ramirez - 11-02-2013, 09:38 PM

RE: Replaced the capacitors but all I get is a hum - by Warren - 11-02-2013, 10:07 PM

RE: Replaced the capacitors but all I get is a hum - by klondike98 - 11-02-2013, 10:33 PM

RE: Replaced the capacitors but all I get is a hum - by Andrew Fleck - 11-02-2013, 10:40 PM

RE: Replaced the capacitors but all I get is a hum - by Andrew Fleck - 11-02-2013, 10:43 PM

RE: Replaced the capacitors but all I get is a hum - by morzh - 11-02-2013, 10:52 PM

RE: Replaced the capacitors but all I get is a hum - by Andrew Fleck - 11-02-2013, 11:11 PM

RE: Replaced the capacitors but all I get is a hum - by klondike98 - 11-02-2013, 11:32 PM

RE: Replaced the capacitors but all I get is a hum - by jerryhawthorne - 11-03-2013, 02:21 AM

RE: Replaced the capacitors but all I get is a hum - by Andrew Fleck - 11-03-2013, 10:27 AM

RE: Replaced the capacitors but all I get is a hum - by Radioroslyn - 11-03-2013, 11:12 AM

RE: Replaced the capacitors but all I get is a hum - by Mondial - 11-03-2013, 11:46 AM

RE: Replaced the capacitors but all I get is a hum - by Andrew Fleck - 11-03-2013, 12:27 PM

RE: Replaced the capacitors but all I get is a hum - by Andrew Fleck - 11-03-2013, 01:24 PM

RE: Replaced the capacitors but all I get is a hum - by morzh - 11-03-2013, 02:51 PM

RE: Replaced the capacitors but all I get is a hum - by Andrew Fleck - 11-03-2013, 07:32 PM

RE: Replaced the capacitors but all I get is a hum - by morzh - 11-03-2013, 10:25 PM

RE: Replaced the capacitors but all I get is a hum - by Andrew Fleck - 11-03-2013, 10:57 PM

RE: Replaced the capacitors but all I get is a hum - by Warren - 11-04-2013, 02:42 PM

RE: Replaced the capacitors but all I get is a hum - by morzh - 11-04-2013, 08:41 PM

RE: Replaced the capacitors but all I get is a hum - by Andrew Fleck - 11-06-2013, 07:27 PM

RE: Replaced the capacitors but all I get is a hum - by jerryhawthorne - 11-06-2013, 07:40 PM

RE: Replaced the capacitors but all I get is a hum - by morzh - 11-06-2013, 10:07 PM

RE: Replaced the capacitors but all I get is a hum - by klondike98 - 11-06-2013, 10:25 PM

RE: Replaced the capacitors but all I get is a hum - by Andrew Fleck - 11-06-2013, 10:39 PM

RE: Replaced the capacitors but all I get is a hum - by BrendaAnnD - 11-06-2013, 11:18 PM

RE: Replaced the capacitors but all I get is a hum - by Andrew Fleck - 11-07-2013, 08:10 PM

RE: Replaced the capacitors but all I get is a hum - by jerryhawthorne - 11-07-2013, 09:55 PM

RE: Replaced the capacitors but all I get is a hum - by Andrew Fleck - 11-07-2013, 10:27 PM

RE: Replaced the capacitors but all I get is a hum - by morzh - 11-07-2013, 10:49 PM

RE: Replaced the capacitors but all I get is a hum - by BrendaAnnD - 11-07-2013, 11:07 PM

RE: Replaced the capacitors but all I get is a hum - by Andrew Fleck - 11-07-2013, 11:47 PM

RE: Replaced the capacitors but all I get is a hum - by morzh - 11-08-2013, 10:18 AM

RE: Replaced the capacitors but all I get is a hum - by Andrew Fleck - 11-08-2013, 11:14 PM

RE: Replaced the capacitors but all I get is a hum - by Andrew Fleck - 11-08-2013, 11:29 PM

RE: Replaced the capacitors but all I get is a hum - by Andrew Fleck - 11-10-2013, 01:23 AM

RE: Replaced the capacitors but all I get is a hum - by BrendaAnnD - 11-10-2013, 02:17 AM

RE: Replaced the capacitors but all I get is a hum - by Andrew Fleck - 11-12-2013, 03:44 PM

RE: Replaced the capacitors but all I get is a hum - by BrendaAnnD - 11-12-2013, 03:56 PM

RE: Replaced the capacitors but all I get is a hum - by jerryhawthorne - 11-12-2013, 04:18 PM

RE: Replaced the capacitors but all I get is a hum - by cwirth - 11-12-2013, 06:00 PM

RE: Replaced the capacitors but all I get is a hum - by morzh - 11-12-2013, 06:31 PM

RE: Replaced the capacitors but all I get is a hum - by Mondial - 11-12-2013, 06:52 PM

RE: Replaced the capacitors but all I get is a hum - by BrendaAnnD - 11-12-2013, 07:30 PM

RE: Replaced the capacitors but all I get is a hum - by morzh - 11-12-2013, 10:11 PM

RE: Replaced the capacitors but all I get is a hum - by BrendaAnnD - 11-12-2013, 10:50 PM

RE: Replaced the capacitors but all I get is a hum - by TV MAN - 01-09-2014, 12:35 PM

RE: Replaced the capacitors but all I get is a hum - by codefox1 - 01-09-2014, 10:53 PM

View a Printable Version

Users browsing this thread: 1 Guest(s)

Recent Posts
Philco Model 38-7: what caps & resistors do fail typically?
Since you stated earlier, you have a console 38-7XX. They also had a 38-7T (table), and 38-7CS (chairside). A very nic...GarySP — 01:18 PM
Part numbers to model cross
That I wouldn't know, but sometimes the radio document itself shows one, same as the capacitor cans' etc pinouts.morzh — 12:46 PM
Part numbers to model cross
Thank you morzh, that is exactly what I was looking for. Now , is there some where that shows pinouts for Philco power ...Jim Dutridge — 11:37 AM
Restoration of the Canadian General Electric A-87
Thanks for your help Michael. In fact, this video is only an intermediate result. Later I had to apply another tinting l...RadioSvit — 09:01 AM
Restoration of the Canadian General Electric A-87
Great job on the cabinet. PS. In the US notation, "kenotron" refers to specific type of tubes; we call re...morzh — 08:24 AM
Part numbers to model cross
This document has at least some tables of models and parts used. Example: Choke 32-7572, used in 604 radio. Search f...morzh — 08:19 AM
Restoration of the Canadian General Electric A-87
I also checked all the radio tubes on my Hickok 530 tube tester. The 5Z3 kenotron turned out to be faulty, all the other...RadioSvit — 08:02 AM
Restoration of the Canadian General Electric A-87
Well... While the varnish is drying up, I started repairing the chassis... Of course I started by replacing the pa...RadioSvit — 07:12 AM
Philco Model 38-7: what caps & resistors do fail typically?
Hello Martin, Welcome aboard our little community what great Model 38-7 Sincerely Richardradiorich — 12:30 AM
Philco Model 38-7: what caps & resistors do fail typically?
Welcome to the Phorum Martin. I count about 9 paper caps, the 3 electrolytic caps and 2-Y2 safety caps to replace th...RodB — 09:44 PM

Who's Online

There are currently 1453 online users. [Complete List]
» 1 Member(s) | 1452 Guest(s)

Login
Username:
Password:	Lost Password?
	Remember me