Question about Onkyo TX-DS939 Receiver
This can be confirmed only by hearing if the outputs are working well. You can open the set and check to see if there is test tone( with a audio signal test) from the input of the power amplifier.
If so we can confirm that the power amplifier is working.
Now the noise in this case can be the potentiometer rubbing with dirt. If so use to vigourously to the left and right to clean out bu itself.
Now tthe possible fault can be failure of power to the preamp section, the failure of preamp or the failrue of the mode selector.
In all the above cases you will need to check with the audio injector to confirm the point of fault.
Try to trigger the selector mode many times, check if any other input is working than the connected one to confirm.
Posted on Aug 28, 2010
What you are getting is excessive phase shift at the lower-frequency edge of the audio pass band, causing oscillation. This is almost always due to aging capacitors or preamp
.Replacing preamp or capacitors will surely solve the problem.
check the coupling capacitors for the speaker outputs. It probably has quasi-complimentary transistor configuration in the amp section. If they loose capacitance the circuit can become unstable.
check the leads on the square transistors.If they are bolted down the leads sometimes break where they are bent.
post a comment for further assistance.
thank you for using fixya have a nice day:-)
Posted on Aug 28, 2010
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
Tips for a great answer:
Jul 25, 2011 | Apple iPhone 3GS Black (16 GB)
Jul 23, 2011 | Creative Labs I-TRIGUE 2200 Computer...
I like to fix things as pet projects...speakers are uncharted territory for me, but my cousin has that speaker and it rocks! You can't find it anywhere...
How's $25 and I'll pay for shipping ?
Thanks for considering (fingers crossed)
Apr 29, 2011 | Griffin Technology Amplifi Speaker System...
Mar 11, 2011 | Samsung Galaxy S GTI9000 Smartphone
Mar 10, 2010 | Michael Kelly Music
Oct 03, 2009 | Bose Companion II Computer Speakers
Jun 26, 2009 | E-Machines eMachines Desktop PC
Jul 22, 2008 | Kaser Corporation Mambo Mano Digital Media...
75 people viewed this question
Usually answered in minutes!