Onkyo Audio Players & Recorders - Page 9 - Answered Questions & Fixed Issues

Very easy to fix. If you want to DIY, just send an email to me This is a very common faulty found in Onkyo av-amp. You may think it is weird. I must tell you,however,I buy faulty av-amp to repair and sell them out. Hence, I will not tell you here.

Can anyone help
In my restaurant we have 2 c390s and they will play 5 or 6 songs on random then they stop playing. Also if there is not 6 discs in it will do the same thing please help?

This site may be helpful. The possible answer is near the end. https://www.hometheaterforum.com/community/threads/onkyo-surround-sound-rear-speakers-no-sound-but-work.307946

The TX 8555 can drive the speakers directly but if you want to use the equalizer then you need to add an amplifier to the system so that you can feed the pre-amp connections from the TX8555 through the equalizer and then into the amplifier to drive the speakers. This is because the TX 8555 doesn't have a loop back function for monitoring recordings.

I suggest you check the settings to make certain everything is correct, the way it was when you first set it up. OR you could try and reset the thing by setting it all up again. If you can find the factory reset on the unit, do that and then do all the settings again.

has it ever worked? sound like you need direct help, you can go here https://www.6ya.com/mrmmike bluetooth is a compilation of software and hardware there is rarely anything you can do to fix issues with it beside resetting devices. Its possible it malfunctioned and onkyo is know for its receivers having various issues- its not like back when. good luck https://www.6ya.com/mrmmike

It sounds like the amplifier is overheating, check if fans are working and clean dust from heatsinks

maybe the speaker is defective, conect diferent speaker

http://www.fixya.com/support/t26883862-dx_c390_compact_disc_changer_get_mech

Try to use S/PDIF (Coax or opt)for audio input instead of HDMI may solve the problem.

You should reset the amp to factory default to see if audyssey disappear. Unfortunately, over 90% using reset to kick audyssey out does not work. What can I do? Calling onkyo to repair is the only option. Never use this function, wifi and bluetooth in onkyo av-amp except warranty is not expired.

No, you cannot do this. Onkyo is just a "receiver" to receive signal not a "transmitter". The receiver requires a "host" to send signals via bluetooth to it in order to playback instead of sending signal to another receiver, your bluetooth headphone. Bluetooth earphone also needs a host (a smart-phone)to send signal to it to playback for you. Any attempts to ask onkyo receiver to send signal via bluetooth will be in vain.

“remote does not operate volume, have to increase decrease manually,” (1)Open remote cover.(2)Clean remote PCB and volume buttons with dry cloth.
(3)add some sliver paint on black colour volume buttons.
(4)wait for paint to dry
(5)remote can be used again.

My onkyo tx-v940 has very low volume. You shouldCheck the voltage supply to both +B and -B voltage.If both voltages are low, the voltage amplification via differetial and voltage amps will be low. Finally, low Volume due to power = VI. If V is low, so does powerOutput. The negative voltage can also be measured as that of +B with black probe clamped to heat sinkby a crocodile clip.

May hav take it apart n fix obstruction or ask a radio store

Enter debug mode to see which type of protection causing amp to shut down.

Apparently so, according to advertisement: https://www.blu-ray.com/Onkyo-TX-SR674/13978/

Hi Rex, if you get this on your display please give us a call so that we can walk you thru this diagnostic, you can reach our Product Support Team at 800-229-1687 as they are here 24/7 ready to assist, Thanks, JT

Download HTR530 Service manual.How to measure voltages?(a)connect the black probe to the heart sink via acrocodile clip. Heat sink can be found easily if you are looking for 12 power transistors.(b)the red probe can connect to any interested points,for example, the POFF (see video1)Check voltages first: POFF(must have. And check 3 components circled in blue see video 1 the last measured voltage) ,10VS (must have)and 12V and also the MPowerd voltage (see video 1) Video 1 shows the MPowerd voltage The lst measured voltagethe - MPowerd voltagemust be ZERO when the amp is switched ON.. Are these voltages present?If so, check reset or you can replace them directly (circled in yellow See video2 and video3)Plug the amp, to see if it is working.If not ,replace 3 components circled in red.If not working again, you can replace the crystal X701,a component 6 MHz, not easily damaged (see video4).If also not working, CPU is torn out.

If it has a preamp out use that.