Question about Sony STR-DB930 Receiver

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Volume control turns around - front part of the shaft snapped

The front of the volume potentiometer shaft (aluminum) accommodating the LED had snapped off the back part which is riveted to the turning wheel by two tiny rivets. To fix this will I have to look for the whole volume PCB (Sony part 1-673-362-11) or have I got any other alternatives?
Regards
geniusgeorge@yahoo.com 

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Unfortunately you will need to replace the original part to service your receiver.

Jerry G.

Posted on Jan 08, 2009

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Need a part # for the volume potentiometer. It has been cleaned several times already & the shaft is loose/wobbles & sound is staticy/comes & goes as volume is raised & lowered &/or...


There are many configurations for volume potentiometers - If you remove yours, you can get the serial number off it and go to a local electronics supply store ( or website , like www.radioshack.com) you should be able to purchase the right one. If the shaft is wobbling, you may be able to tighten up the casing by bending the tabs on the back of the casing - make sure you're squeezing the casing closed with the shaft in the proper location. If you have talent ( this part is really challenging for me ) you can straighten out those tabs, disassemble the switch, clean the contacts with a pencil eraser, regrease with dielectric grease and re - assemble. Personally I would just buy another - much easier!!
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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 !

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ps : enjoy your RXV800 !

Jul 03, 2008 | Yamaha RX-V800 Receiver

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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

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