Hello, I own a Pioneer audio receiver SX-311R. The sound will drop out at low volumes, usually from the left channel. It sounds like static or bad radio reception but clears up when the volume is increased. It happens intermittenly and only on low volume. I'd like to repair it. Do you have any suggestions? Thank you for your help. Sincerely, Mariano

Hello Bernard, your Pioneer AX-311, is a two-channel, stereo amplifier, you can connect your Samsung TV, if it has audio output L and R, to an input of the Pioneer, say for the AUX input, what will get, is to listen to the sound of the TV in your Pioneer, in stereo, two channels, you can not have surround sound, because your Pioneer does not have that benefit
At the most, you can hear the sound of Samsung on the TV and the amplifier simultaneously, and you will hear a sound delay between the Pioneer and the Samsung
I hope my answer was useful
Greetings Franco Dosil

Hola Bernard, su Pioneer AX-311, es un amplificador de dos canales, estereo, usted puede conectar su TV Samsung, si tiene salida de audio L y R, a una entrada del Pioneer, supongamos por la entrada AUX, lo que va a obtener , es escuchar el sonido del televisor en su Pioneer, en estereo, dos canales, no podra tener sonido Surround, porque su Pioneer no posee esa prestacion
A lo sumo, podra escuchar el sonido del Samsung en el televisor y el amplificador simultaneamente, y se escuchara un retardo de sonido entre el Pioneer y el Samsung
Espero que le haya servido mi respuesta
Saludos Franco Dosil

Check your connecting terminals on both ends for that channel that the polarity is correct and firmly connected. If you find no problem with that, then swap the connections...if the problem repeats to the other side then the speaker is damaged. If the problem stays on right side then it is the unit and needs to be investigated further.

A little more triage would be in order before you take a knife to it. What source(s) produce the distorted sound? How about test tones? Same? It's sick. Not same? Something else is going on. Have you referred to the manual(s)?

If you have checked the speakers and wiring, the right channel has a audio driver or output problem, which explains the low volume, static, and distortion. A service technician will be required to fix the receiver so it will balance the left side.

DVD audio straight in from its highest quality audio output. Use the stereo audio output to run straight to the TV for casual watching through TV speakers without the Pioneer involved.

A TV is just a glorified night-light, not a sound source - get its related audio from the Cable Box, ditto the highest quality

sorry no easy solution as it sounds like the output transistors blew out or the emmitter resistors. you will need a service manual and an multimeter to measure the resistors on or around the audio output transistors they are a low value resistor usually around 1 to 2 watts in size. Do not replace any bad , burnt or discolloered resistors around the audio output transistors as if tou do you might just cause more damage to the output transistorsor audio output stage including the audio driver stage of the amp!!!!!!
Larry Dillon

hello i have a pioneer sx-315 it plays great but the sub performs badly.they sound is very low.they really need to perform better.if anybody know any sub that work better please let me know.

Hello. Receiver is been repared. I was told that a transistor and some resistors falled aut.
Thank you for assistance.
Regards,
Vladimir

It sounds like your volume control pot has dust in it.You need to remove your cover from the receiver,spray pure denatured alcohol in the small openings in the back of you volume control dial and turn the knob all the way up and down several times and then blow low compressed air threw the same small openings while rotating your dial.That should fix your problem.Be sure you unplug your receiver before performing this procedure.

If you receiver doesn't have phono inputs,you will need to buy an inline phono amplifier.Phono inputs have a built in amplifier,all others don't.Try Crutchfield.com.If they don't carry them,they will tell you who does.