Onkyo Audio Players & Recorders - Recent Questions, Troubleshooting & Support

i believe protect mode is because you have the wrong impedence speakers, they are too low (4 ohm? 6 ohm?) it chols work with 8 ohm speakers

Onkyo TX-SV454... | Answered 30 minutes ago

You need to check several voltages
(2)FLAC1 and FLAC2
(3)drive signals to FL needs a digital storage oscilloscope to observe waveform. Or replace chip directly.
This is a full picture.


Onkyo Audio... | Answered Yesterday

does it make any sound when you click the eject button? please explain the problem in brief.

Onkyo Audio... | Answered on Jun 17, 2019

check to make sure the speaker wire is not touching on the back of sterio or speakers. then shut off and turn back on. check the menu for speaker a and b and make sure it is turned on

Onkyo TX-NR509 | Answered on Jun 14, 2019

"Tone Control is not working when I push the button but the light will go on and off." Download TX8511 service manual. Tone control circuit involving balance, bass and treble circuit is defective. Check circled componets or replace them all. If replacing them all, balance circuit should also be replaced.


Onkyo Audio... | Answered on Jun 13, 2019

"ONKYO tx-nr737, when I am connected via Bluetooth to my iPhone for music I get a SP Wire message. " The wifi and bluetooth part is defective, replacing it may fix your problem. See photo how a good wifi and bluetooth works.


Onkyo Audio... | Answered on Jun 13, 2019

"I accidentally touched a speaker wire to the metal spikes on the bottom of my speaker. " This action makes +B voltage (positive voltage) short to ground. You may assume 2 power transistors mounted on a large heat sink are defective. Now try to remenber which speaker terminals was accidentially shorted. Then check this terminal or you should check all power transistors mounted on the heat sink, by measuring the collector and emitter resistance. Normal value is Mega ohms and all white 3 pins resistor with 0.22ohm should also be checked if they are open( infinity resistance).I have tried to reset it several times to no avail. Of course, due to defective power transistors. Is my receiver done? Yes. I wrote detailed troubleshooting steps used in onkyo service dept. a year ago, just find it out in my answers.210cda21-872d-438d-949c-2196ccf76712.jpg

For your case, DET. PROTECT: I instead if entering debug mode.forum.php-1foajingjd1ngrzzacwcq31h-2-2.jpeg
NG L R BL BR, This amp is under DC protect.

Onkyo Audio... | Answered on Jun 08, 2019

" I have an Onkyo tx-nr807. It stopped putting out sound and where it shows all the speakers that are on, the subwoofer light is flashing. " If speaker indicators are on, you should check DIR and speaker relay drive voltage if +24V is present.

Onkyo Audio... | Answered on Jun 01, 2019

"Volume knob not working on my onkyo tx-ds656"
replace the volume knob but check the volume control IC first such as voltage and whether an analog signals come out by an oscilloscope.

and " lost remote " Check if the onkyo remote is working, by:
(1)point a mobile or a smart phone camera at an onkyo remote control.
(2)Don't take any photo.
(3)Now the remote picture is on the mobile or smart screen.
(4)Press any remote control key.
(5)White flashing light can be seen if remote is ok.
(6)If remote is fine, replace the remote senor on tx-ds656 with same part number.

Onkyo Audio... | Answered on May 31, 2019

Your replacement remote (control) is not functionally equivalent to the other.

Onkyo Audio... | Answered on May 31, 2019

“Hi, Onkyo TX SR 705 have a super cap for memory presets ou eeprom?? ”
Yes, it may have a 5.5V cap with 0.1F for memory to use .When the power is down and it loose the presets, whats the problem?? Tks
Don't worry, it will be charged up when the amp is On. The longer the time it is on, the longer the time it charged.For your case, replace the cap mentioned above can fix the problem. I will post the photo later.

After checking the onkyo TX-SR705 service manual, however, I did not find any capacitor of 5.5V 0.1F on the schematics. The EEPROM is powered by a polar capacitor. See photo.

Step of repairing
(1)Download the onkyo TX-SR 705 service manual.
(2)Find out the EEPROM located at Main Microprocessor Unit.
(3)Replace the capacitors of epprom
(4)If the problem doesn't solve, copy
all data form the old EEPROM by a SPI EPPOM reader.
(5)Buy a new SAME MODEL EEPROM and copy the old data to
the new one.
(6)remove the old defective one from the circuit board
(7)put the new one with data copied to the circuit board.7abf1fe5-29df-4e3d-98b4-8e2ba153ec59.jpg

Onkyo Audio... | Answered on May 29, 2019

First the OS must be win 7 or above; XP does not
support bit streaming. Second, display card or motherboard on board display card must support
bit streaming. Third the software must also support bit streaming.

See photos:

Onkyo Audio... | Answered on May 29, 2019

Hello Hasnul, for what you comment, it is very possible that the integrated circuit has been burned, that works with the Front System A output and you have to replace it, the Front System B output, works with another integrated amplifier circuit, which is working well
If you have technical knowledge, I send you the link to download the Service Manual of your Onkio and know which integrated circuit to replace
But, I suggest you look for a specialized technical service
I hope you can solve the problem, comment the results
Greetings Franco Dosil

Hola Hasnul, por lo que comentas, es muy posible que se haya quemado el circuito integrado, que trabaja con la salida Front Sistema A y tengas que reemplazarlo, la salida Front Sistema B, trabaja con otro Circuito integrado amplificador, que esta trabajando bien
Si tienes conocimientos tecnicos, te envio el link para que descargues el Manual de Servicio de tu Onkio y sepas que circuito integrado reemplazar
Sino, te sugiero busques un servicio tecnico especializado
Espero que puedas resolver el problema, comenta los resultados
Saludos Franco Dosil

Onkyo Audio... | Answered on May 24, 2019

“DX-C390 and vocals are drowned out by instruments.” Problem may come from opital pickup and digital decode board(DSP & DAC)Download service manual and check waveform. You should clean optial pickup first with soft cloth to remove dust and water film to see if problem fixed.

Onkyo DX-C390 | Answered on May 19, 2019

“HT-R340 DSP Debug Mode” Does it show DSP ??????? Place a photo here to show more detail if you want.

Onkyo Audio... | Answered on May 18, 2019

“my onkyo TX902 keeps turning off by itself.” Amp Volume too large. Tune it down and also tune the speaker level down found in speaker config.

Onkyo Audio... | Answered on May 12, 2019

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