Question about Pioneer Audio Players & Recorders

2 Answers

Pioneer Receiver SX-750: Getting a loud hum through the speakers

Purchased 1976. Getting loud hum through the speakers. When the speakers are disconnected I can hear a faint hum coming from inside the receiver. Thinking it may be the transformer? but not an expert. Would like to keep the unit (after cleaning an inch of dust from internals, and fixing the hum) but if I can't fix myself for less than 50 bucks or so will probably pass it on to Goodwill. Thanks for the help.

Posted by on

Ad

2 Answers

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 13 Answers

I had a similar problem when my Plazma TV + DVD Player + Receiver all interconnected. Some time later, I realized that the hum was leaking from CATV connecton to my TV antenna input which was indirectly reaching to my Pioneer receiver. When I disconnected the CATV cable, the sound was perfectly clean.
I guess mains power was interfering to CATV signal somewhere.

I.Kostak from Turkey.

Posted on Mar 20, 2010

Ad
  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 8,546 Answers

The hum you hear from the speakers and from the unit itself originate with 60hz AC power. They may not actually be related. Sometimes a transformer will hum slightly and unnoticeably. That you're getting a loud speaker hum says there is an electrical leak or a grounding issue somewhere.

Do all sources produce the hum or, say, just the phono? How about on headphones? Try rotating the AC plug. In those days they weren't keyed with one large blade as they are now.

Posted on May 17, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
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.
Goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Humming and buzzing from my speakers, no sound out of left rear speaker


Look likes a connector is ground loose or only a cable is crushed

if no other parts are connected a capacitor problem somewhere

Apr 23, 2016 | Pioneer Sx-316 Audio Multi-channel...

1 Answer

Pioneer elite sx-a6 keeps going to standby


I had a receiver that would shut off when I had the volume too loud. It was caused because the speakers were using too much juice. Does it work with less speakers or at low low volumes? Then this may be the case.

I solved it by getting a different receiver.

if it has nothing to do with volume then check your manual and settings for a auto standby feature that may be just putting the receiver to standby after a set time.

Apr 14, 2014 | Pioneer ELite SX-A9 HI-FI Audio Receiver...

1 Answer

1976 pioneer sx 1250 receiver has no sound from receiver to speakers


for
1976 pioneer sx 1250 receiverhas no sound from receiver to speakers

check the integrity of speaker systems,

check the receiver internal components, pay close attention to the

capacitors, possibly have dried up or swollen (age)


Check for continuity to the speaker outputs.


These may take some time, but I hope you will make it.

Sep 09, 2012 | Audio Players & Recorders

1 Answer

Pioneer sx-255r can i connect 6 - 8 ohms


Yes, you can use them but be careful. These are not necessarily robust speakers. If they sound strained, back off.

Mar 07, 2011 | Pioneer SX-255R Receiver

1 Answer

Pioneer receiver sx-315


With persistence, I was able to program the Universal Remote Control provided with the cable box to control my new used Pioneer SX-315 receiver. I now can control the tv volume, cable box, auxiliary stereo receiver with speaker system with one remote. Thank goodness I did not have to resort to buying a Pioneer remote control.

I was able to program another previously unused universal remote which I purchased several years ago. However, since the other remote control did not list the Vizio TV. That brand is too new for the remote.

Dec 06, 2008 | Pioneer SX-315

5 Answers

Pioneer SX-750 Old School Need Help


It could be a dirty control or switch, working them back and forth could prove that. Other than that, It's likely bad outputs. A unit that old may have transistors for outputs but might be IC's. Transistors can be tested with an ohm meter to see if they're good or not. Also if it has transistor outputs, they may have a small value resistor on the Emitters, check those as well.

Hope that helps...

Geno

Mar 07, 2008 | Audio Players & Recorders

2 Answers

Have a B&O RX-2 with mcc4 and loud hum


Possibly check the wires on the cartridge, make sure none of them are touching and are not bent to badly, are all the connections tight? some cartridges require plastic sleeves over the connections, this insure they don't touch and
avoids resistances between them. Also some cartridges are not compatible with certain model turn tables.Is it universal? Also you my need a mixer most turntables don't work with amps alone. Mine don't. Usually most models you attach the ground wire to the mixer. A mixer boosts table power and take stress off the amp. Hope this helped! good luck!

Jan 31, 2008 | Sony PS-LX350H Turntable

4 Answers

Pioneer SX-203


a little bit foolish thing: see if you have both the speaker channels (A and B) down. if you have both down it doesn't work - didn't for me.. and obviously make sure you have the right letter down - same outpout as your boxes

Dec 06, 2007 | Pioneer SX-205 Receiver

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

Related Topics:

1,141 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pioneer Audio Players & Recorders Experts

 Grubhead
Grubhead

Level 3 Expert

5158 Answers

John
John

Level 2 Expert

509 Answers

T-Comtech Repairs
T-Comtech Repairs

Level 2 Expert

417 Answers

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

Answer questions

Manuals & User Guides

Loading...