Sansui rz 9500 av ... there is not sound output from this unit. when I test the test tone... there is sound ... all the speaker is in good condition ... it work for the pass few week but suddenly not

Question edited for clarity.

It appears to be a known issue and looks like you will need an audio technician.

https://www.google.com/search?q=sansui+RZ-5100AV+no+sound

..

there is no reset.
https://www.manualslib.com/products/Sansui-Rz-3700av-8659147.html

Sansui RZ-2605 A/V Receiver no sound


• Check to see if the sound on the stereo receiver has been muted.

• If the stereo receiver has a headphone jack, make sure

no headphones are connected.

• Try a different audio setting on the stereo receiver.

• Check the speaker wires to make sure they are

connected securely to the stereo receiver.

• Try connecting different speakers to the stereo receiver



If these have already been done,

Symptoms still persist, service may be required.



hope these helps,

thanks for choosing Fixya for assistance.

http://www.hifi-manuals.com/Download/Sansui/RZ-5200-AV-service-manual

This worked for me.
peep my music @ crushproofstudio.com

have problems with volume

Instead of connecting it to the sub output, try it on the L or R output of your amp.
This will eliminate the Denon.
If this fails, you need to test the loudspeaker driver unit whilst disconnected from the sub amp. Use a 1.5v cell (AA or bigger) connect using croc leads to the speaker's terminals. If the speaker is OK, you should hear a click. If you hear nothing, the speaker unit is faulty.

The symptom you described can be caused by any number of things. I always start with the output power transistors which are the first things to blow with a speaker output overload condition. Unplug the power cord to your unit, remove the top cover and use an ohmmeter to check resistance from C to E on all 10 of the power transistors (Q6050 thru 54 and Q6060 thru 64) attached to the large heat sink. Blown transistors typically read <1 ohm, compared to good transistors that are >10k ohms. If you find a bad transistor it will need to be replaced.

I have the same rz 6880 av 5.1! bt im not facing that problem. Iv connected my Bose III series speakers to it...and it plays well. Maybe you need to check your system with a qualified personnel.

Then something in the speaker cabiet is bad. your going to have to have it tested out by a pro if you dont have the proper equipment to test it. if you have to ask what equipment then no offense, but you dont have it.