Tx-ds747 no display light,when powering on only stand by mode and the volume knob has light ,how to fix it.

"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.

Amazon com Receiver or amplifier cooling fans with thermoswitch multi...

Try factory reset: while holding the(CD) button on front panel,press (POWER) button.
After "Clear" is displayed the unit should be back to its factory default. :) If this dont work for you take the unit to be checked by service . :)

R9304 or R9310 are broken, if no light in display. This are 10 ohm resistor sitting on the board behind the volum knob in front.

The problem could only be in the a/b switch, you may need to install a new switch.

You can buy directly from onkyo website, Ebay or Do Google search.

Big Knob settings from left to right...
First knobset...inner turn "volume" fully clockwise
... outer "squelch" fully counterclockwise
Second knobset...both inner and outer knobs fully clockwise
Third knob...chose which mode you want to use...Am or Fm (If your radio has been modified to TX/RX CB frequencies, chose AM)
Fourth knob...chose your band (If your radio has been modified to TX/RX CB frequencies, chose band D/A)
The only other knob that is important is the high/low power switch. It selects the band from the pair chosen by the band knob. I don't know if band D corresponds to high or low, so try both settings until one works.

If you can't TX or RX with these settings either there is no one talking at that time or your radio, antenna, or cable might be defective. You should get a copy of the owners manual to fully learn how to chose bands and adjust the settings. I've given you a starting point that should work but may not be optimum for all conditions.

Hello

maybe you have defective power transistor output and this is shorted, or the problem is in the power section like shorted diode shorted capacitors or open circuit may cause this, and the STK IC if shorted you got protect warning..

Angel
Thansk...

I see that I am not only one with same issue with TX-DS747, and would be grateful if someone could post some more info about this problem.

Enter into the Audio Setup mode(press and hold volume button for at least 1 second). Next, repeatedly push the volume button until the display shows "2 ZONE". Make sure this feature is turned off. Hold the volume button again for at least 1 second to leave Audio Setup mode.

Now you need to make sure the Subwoofer Output is turned on. Do this by holding down(AM position) on the control knob(toggle stick) for at least 1 second. Each time the button is pressed, the Subwoofer Output is turned ON/OFF. the display should show "SW ON".

Next, you can go into Audio Control mode(press but do not hold volume button). Keep pressing on the volume knob until "Sub-WLevel" is displayed. Here you can adjust the amount of gain for the Subwoofer ranging from -15 to +15.

I hope this fixes your problem with it.

Cheers