Question about Audio Players & Recorders

3 Answers

My Telefunken Opus 7 radio suddenly started humming real loud. I went to sleep with it playing nicely, and it woke me up in the middle of the night with the humming. It's about fifty years old, but it has been an exceptional radio. I would like to keep it if it's fixable.

Posted by on

  • Anonymous Nov 05, 2008

    I also have a Telefunken Opus 7 with a loud hum when turned on. I agree with replacing the filter caps (which I will do) Also I onder if the full bridge diode is bad, however, the small in line fuse (top right of chasis) has not blown. I'm going to replace the filter caps and then go from there if still not working.


3 Answers

Could be a bad selenium rectifier as well

Posted on Oct 08, 2008

Replace the two 50uf 250 electrolytic filter caps (they are in one can above the chassis) Don't play it in the meantime unless you have good fire insurance.

Posted on Oct 01, 2008

Replace the filter capacitors in the power supply section

Posted on Sep 24, 2008

1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

Why is there low humming in the receiver sub channel(only?)

Sounds like a shorted capacitor in the sub out circuit.

May 04, 2015 | RCA Audio Players & Recorders

1 Answer

My sc40r amp started humming really loud after i had turned it on... it played perfect the night before... but when i went to go play it this morning it started humming really loud then stopped and began...

You take it in for electronic repair. Unless you are electronically adept at troubleshooting and repair this is not DIY. Probably one side of the PA transistors has shorted. You can blow the speaker if you keep trying to use it this way.

Sep 24, 2011 | Rogue SC40R 40W 2x8 Stereo Chorus Guitar...

1 Answer

My iphoneran out of battery and wont charge (i think)

try leaving it on charge for a few hours, otherwise that ipod radio could have damaged it

Nov 02, 2009 | Apple iPhone Smartphone

1 Answer

Alarm Malfunctioning - 2004 Sable

Have your battery checked for shorts. Mine was defective on a new Lincoln. Same problem. Even sat in it at 18 degrees one night to appease neighbors whom my alarm woke up.
Check connections at every possible point if the battery tests good.
Get up 30 minutes before alarm usually goes off and see if neighbor has loud car or slams his car door. Motion sensors can set it off too.

Aug 17, 2009 | 1998 Mercury Sable

1 Answer

Samsung HLP6163W wont turn on

I went to sleep my tv was play i woke up and don't work so i turn it on popping crack sound and it shut down what do nowno tv

Sep 13, 2008 | Samsung HLN617W 61" Rear Projection HDTV

1 Answer

My x20 distorts sound and med frequencies are almost gone.

Almost all mp3 players are sensitive to headphones turning in the jack - this is an inherent limitation and cannot be fixed. If it playing out of one ear only, however, that is a problem and can be fixed by replacing the player.

Nov 28, 2007 | iRiver X20 MP3 Player

1 Answer

Player won't turn on

Loud noise = diode is bad, and the dvd player needs to be repaired/replaced

Jun 16, 2007 | Toshiba SD-K740 DVD Player

Not finding what you are looking for?
Audio Players & Recorders Logo

Related Topics:

2,480 people viewed this question

Ask a Question

Usually answered in minutes!

Top Audio Players & Recorders Experts


Level 3 Expert

102366 Answers


Level 3 Expert

4997 Answers

The Knight
The Knight

Level 3 Expert

73474 Answers

Are you an Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides