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Model yamaha RX V800 the volume button when turned clock-wise....lowers volume....and visa versa....what the heck is the problem.....frustrated,,,Mik'ie :-(

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Hi there,

I bought my RXV800 in late 2001. This amplifier is absolutely fabulous and I understand others -like me- being unhappy when it starts to fail. I have the volume control issue as well, it started to work normal for at least 5 years, then there was a period of 1 year that the volume neither went up or down when you turn the volume control and then finally a 3rd phase was that it more or less works reverse.

It is solvable and I repaired it myself for $ 0,0. The only requirement is that you are a bit handy. You need to open the box and find yourself a way to the volume control (and you know where this sits of course) because this is the one that needs to be repaired. This is 35 screws away from you in total but this sounds a lot worse than it is !

It is indeed the volume control that needs to be repaired. In an analog amplifier this component would contain a resistor (potentiometer) but hey this is a digital volume control and looks from the outside the same but isn't at all. You need to take this volume control with 5 contacts of its print with a soldering iron. Open this potentiometer lookalike and clean it with some absorbing paper. The issue is that there is a kind of oil/grease from the shaft (which is there in order to turn smoothly) which has leaked into the area of the contacts in the middle. Just clean it and turn 50 times with it in order to spread the remaining oil/grease if there would be any. Close it again, solder it onto its print and switch on the unit... you will see that it is repaired... not for 1% or 10% but for the full 100%.

Hope this helps !

Regards,
Dirk

Posted on Oct 07, 2008

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