Question about Audio Players & Recorders

Open Question

Sansui 9090 left A channel no sound, (right A, both B & C all work)

Left A channel no sound, (right A, both B & C channels work)

Posted by on

  • Anonymous Mar 24, 2008

    red flashing light indicator for power protector needs to be reset

  • Anonymous Mar 18, 2009

    Sansui 9090

    I get the flashing red light that never transfers over to green.....what to do? Thanks, Frank Poindexter.....Monroe, NC

×

1 Suggested Answer

tech48
  • 624 Answers

SOURCE: Denon AVR-3802 Front Left and Centre channel not working right

I work at an authorized Denon service center and have repaired lots of Denon receivers including this model. So bare with me, and trust that I really do know what I am talking about.

The first thing you need to do is find out if those two speakers may be at fault. You can do it very easy by disconnecting them and connect two of the known good speakers into the channels that the bad sound is coming from and then connect the suspected bad speakers in where those good speakers were connected to.

If the same speakers still sound bad, you know that you have a couple of bad speakers. I think that it is likely that the speakers are OK, but it is a good idea to make sure.

If the sound from the suspected bad channels is now still bad with the two good speakers, you have an internal amplifier problem or you have a problem on the digital board.

For your sake, I hope it is the amplifier that is giving you this problem, if it is, that can be fixed by a good audio technician.

If the problem is the digital board, you may be in for some real headaches. Not that many audio techs are very good at troubleshooting a digital board, its not their fault, it is just a very difficult job.

In either case, it will need to be looked at by a qualified technician.

I hesitate to tell you this, but the problem sounds like a digital board problem. In some rare cases, a technician with excellent soldering skills can reflow a couple if the memory IC's on the digital board and restore proper operation. If the technician is top notch and isolates the problem to a specific IC on the digital board, they can replace that IC and you are good to go.
But in most cases, the technician will not even bother trying to troubleshoot the digital board because it can take hours of troubleshooting, and just order the board if it is available. Most of them are available from Denon, but they are very expensive. Normally the part alone is $200 to $300 and I have seen many times where it takes months to get it.

You can also send it directly to Denon's factory service center and that will get your unit back much quicker. They have direct access to the boards, where-as the authorized service center must order it thru one of the Denon parts distributors and they do not always have them in stock. so you end up waiting for a long time.

If you need to send it to the Denon factory service, let me know and I will email you a return authorization form, this must be faxed or emialed to Denon with the proper information and then they will fax or email it back to you with the RA number which must be written on the outside of the box before shipping it to them.

I hope that this information wasn't to overwhelming, but if you found it helpful a good rating would really be appreciated. It helps to keep the experts on FixYa motivated and willing to answer the questions people have even it the answer is not very good news.
I received an "inappropriate" rating from somebody who just wasn't happy with the truth, and most people never even bother to rate our answers. But that's another whole subject.

let me know if you need more help.

Posted on Jun 22, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

I have vestax 05pro2. Left channel works but out of one speaker. The turntable input is good. Im thinking Its either the channel fader, or the rca inputs for that side. Has anyone had this problem?


Hi,
Here's a solution to see if you have a problem with either your receiver or turntable.
The turntable has 2 RCA's one red for right channel, and one white or black for left channel, which plug into the back of the amplifier.

  • Unplug both RCA from rear of amplifier.
  • Plug in a cd or dvd player into those inputs on the amplifier, the sound will be lower but it will give you an indication if the amplifier is ok or not.
  • If you have sound on both channels left and right then the amplifier is good
  • If you still only have sound on left channel, then there is a problem with the right channel input on the amp.
  • If your amp, is good, unplug the cd /dvd player.
  • Put a record on and start playing the record
  • Plug the white or black RCA from the turntable into the rear of the amplifier marked left, you should have sound.
  • now unplug it from the left and plug in into the right red RCA socket, if you have sound the amplifier is working fine.
  • if there is no sound there may be a problem with the stylus cartridge on the turntable
  • now lets reverse the test
  • unplug both RCA from amp.
  • Plug the red RCA into the left socket on amplifier, if there is sound, turntable is working fine, if no sound there is a problem with either the stylus cartridge or that red RCA cable.
  • now unplug the red RCA from the left side and plug it into the right side socket
  • if there is no sound there may be a problem with the stylus cartridge or RCA cable.
I hope this helps

MobileJB

Jul 15, 2011 | Audio Players & Recorders

4 Answers

Subwoofer


go to audio set up and configure the system for 5.1 or higher sound output.then only all the speakers ll work

Jan 03, 2008 | Yamaha RX-V640 6.1 Channels Receiver

1 Answer

How do you balance sound between two speakers. Where is the balance control? JVC RX5000v


On the front panel ONLY:
1. Press ADJUST so that the MULTI
CURSOR up/down buttons work for
adjusting the sound.
2. Press MULTI CURSOR up/down
repeatedly until "BALANCE"
appears on the display.
3. Press MULTI CURSOR left/right to
adjust the balance.
• Pressing left decreases the right channel
output.
• Pressing right decreases the left channel
output.


please rate my solution.

Jul 04, 2011 | JVC RX-5000V 5.1 Channels Receiver

1 Answer

Right speaker amplification is gone. sound comes out but is not amplfied and loudness button does not work. where am I looking on the schematics to troubleshoot?


Before we go cutting the patient open, a bit more triage. Maybe a model number?

What source(s) have a failing left channel?

How do you know the 'sound comes out'? Where?

Use FM as your test audio source to eliminate the no-brainer cabling issues.

Feb 19, 2011 | Sansui Audio Players & Recorders

1 Answer

I have an old Sansui 400 receiver. I get no sound from the left channel--both A and B speaker options. The speaker and wires are OK, because they work when hooked to the right channel contacts.


The problem seems to be the left transistor part of the unit. Try this:change A versus B speakers, asuming speaker A was working properly. If still speaker A, now connected to left output does not work, you will probably have transistor malfunction on the left channel of the receiver. Any electronic store will substitute the left transistors.
Good Luck.
Flavio/BRAZIL

Jul 23, 2010 | Sansui Audio Players & Recorders

1 Answer

Technics 1310 turntable has left channel (white


There are just two causes, one is the preamp, which can be easily checked by putting the right channel jack in the left terminal. If the sound is normal, then it's likely that the cartridge in the deck is bad, or some wire is loose. However if the sound is still poor then the magnetic cartridge preamp in the amp has a fault. These are normally a single IC, which will have failed. Find the preamp by tracing the wires from the imput socket to the PC board, which may be alone.

Mar 21, 2010 | Audio Players & Recorders

1 Answer

Describe your Onkyo TX-SR875 7.1 Channels Receiver Problem All right channels are not working. Left channels including center channel speaker is working. Please advise.


Recommend changing your FINAL drive AMP IC most house BOTH right and left channels, your drivers right channel input is good cuz it is used to make the left channel signal

Nov 22, 2009 | Onkyo TX-SR875 Receiver

2 Answers

Left channel not working


The first thing I would check has already been done, the only other thing would be fuses. I am preety sure there is a protection fuse at ever channels output to protect against a dead short. I am sure you have already fixed this problem but I thought I would give it a try. Let me know what you found.

Jul 13, 2008 | Denon AVR-3802 Receiver

2 Answers

Technics SU-G91 Left channel bad


Did you ever find the solution to the left channel issue? I have the same problem with mine.

Dec 02, 2007 | Technics SA-AX540 Receiver

1 Answer

Both left and right speakers play audio for right speaker


I think you mean the left channel is out but when you use test tone, the sound comes from left and right channels through the right channel speaker. If this is case, the switching IC is malfuncting. Unit needs service

Mar 15, 2007 | Sony STR-DE545 Receiver

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

Related Topics:

674 people viewed this question

Ask a Question

Usually answered in minutes!

Top Audio Players & Recorders Experts

kakima

Level 3 Expert

98694 Answers

 Grubhead
Grubhead

Level 3 Expert

4678 Answers

The Knight
The Knight

Level 3 Expert

69654 Answers

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

Answer questions

Manuals & User Guides

Loading...