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I Have an Ampeg AX-70 it goes back and forth at will from channel A to channel B.

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I also have a Sony STR-D365. Volume control works intermittently as well as right channel. Works if I "wind" the volume control up and down a bit and then goes out again. I reset it and no change. Any


There is a wiper on the back of the volume control that varies the resistance through the switch to control the volume. When you move it back and forth you are scraping the oxides off the switch and making it work again. I suggest you either get some contact cleaner and spray the control from inside (where the wiper is) or just change out the switch.

Jan 10, 2013 | Audio & Video Receivers

1 Answer

Left channel cuts out, if i tap the reciever it will come back on.


sounds like the controls are dirty...or possibly the solder connection on the volume control has become intermittant...you can goto your local electronics store(or Radio Shack) and get some contact cleaner..open the unit up and clean the volume control as per the instructions on the can...make sure when you spray the cleaner into the control you turn it back and forth several times...then you want to spray more in to flush out whatever debris may have been in there...be careful not to get any on the face plate as it may damage the finish...also , make sure that the chemical spray that you use is safe for plastics...If this doesn't fix it , then the volume control assembly may need to be resoldered.

Mar 01, 2012 | Sony STR-DE185 Receiver

1 Answer

Left channel faiure - no sound



If you have sound from one channel it is probably not a catastrophic failure of the output stages. 

First isolate the problem. Does it occur with all inputs? If so, it is at a common stage after the input switch. Otherwise, it is before the input switch. 

Do you have  anything patched into the signal path between the pre-amp and amplifier, such as a recorder or equalizer? If so, bypass it or remove it and see if that solves the problem.

Also, sometimes the metal contact surfaces in switches oxidize and collect contaminents, causing and interuption to the signal path. Make sure the volume isn't cranked, and then work the controls back and forth - if the channel comes back, even briefly, there's a good chance you can either clean it sufficiently by working the control or better, getting a can of contact cleaner from Radio Shack or the equivalent, removing the covers of the receiver (after pulling the plug), and spray the cleaner into each control before working the control back and forth a half-dozen times. With really bad controls, this can even cause the sound quality to improve.

If this doesn't isolate the problem, its time to take it to a qualified tech.

Nov 01, 2009 | Onkyo TX-DS656 Receiver

1 Answer

Sugden A48, one channel keeps cutting out. Sound restored by increasing volume but at low volume goes again.


The volume control may need to be cleaned. Find a spray cleaner made for electronics, relays, ect. and spray it into the volume control from the back side of it where it connects into the circuit board. After getting the cleaner into the volume control, work it in by turning the control back and forth over and over again. Do all of this with the power unplugged from the unit. After you finish cleaning the volume control, plug it back in and turn it on and then check to see if it is working normal. Volume controls can get oxidized and dirty after a few years and require cleaning. I hope this helps, let me know if you need any further help.

Dave

Oct 14, 2008 | Audio & Video Receivers

1 Answer

Right speaker goes off when using Rec out on the Phono input


The switch is contaminated. Pick up some electronic switch cleaner and spray into the switch. Move the switch back and forth a number of times and that should clear up the problem. Make sure that you get the cleaner that has a lubricant included.

Dan

Jul 08, 2008 | Yamaha RX-595 Receiver

1 Answer

My ampeg svt 5 pro bassamp turns itself on and off several times until it warms up especially when its cold can you help please?


Hi Guys,

Have a look here for a debug of this issue: YouTube - Ampeg SVT-5 Pro Problem YouTube - Ampeg SVT-5 Pro Problem
I recon two fixes are possible:

1. (Easy) increase the size of the heatsink on IC4.

2. (Hard) adjust the turn-on temperature of the fan by adjusting the control circuit.

I'm going to try 1, I'll let you know how I get on. icon_tup.gif

Cheers,
Grant

Mar 25, 2008 | Audio & Video Receivers

1 Answer

Denon AVR1602


I know the avr 1602 well....What exactly do you mean "I have my TV cable service wired to the Denon".....Do you mean the actual co-ax cable ?....

The denon is only able to switch raw video and audio signals.

What do I mean by that ?....IF you are running your co-ax cable from your cable company directly into the back of the denon, it won't work. The Denon has an AM-FM tuner, but not a video tuner ( channels 1-121)....If this is what you are doing, then you want to run it to your samsung first ( as long as the samsung has a tuner so you can change channels ).

If the samsung operates like an old VCR, whereby you can plug the cable company co-ax cable into the back of it, and change channels with the samsung, then that is what you must do. You would then hook up the OUTPUTS of the samsing to the VCR or DVD inputs on the Denon receiver. ( use DVD inputs on the denon if the samsung has optical audio out, and use an optical cable as well for better sound ).

You would then use the Denon for the sound, and hook up your TV to the Monitor out jack on the back of the Denon.

The Denon is like a big switchbox. You plug your DVD, VCR, Satellite, video game, or what-have-you into the Denon. Then you use the denon to route the signal to your TV for the picture, and the denon takes care of the sound.

Hope this helps, and remember to always follow your owners manual.......Rob

Mar 13, 2008 | Denon AVR-1602 Receiver

1 Answer

Back channel turn off and on


Same problem with the 2.1 channel DRA-297. All sound cuts off and screen reads h/p input. I don't even know what that means. What's wrong here?

When it happens, the receiver makes a clicking noise. it goes back and forth from being on to h/p input shutdown. sounds like someone repeatedly flicking a lightswitch.

Thanks to whoever can help!

Jan 28, 2008 | Denon AVR-1700 Receiver

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