Hi guys,
New guy here.
I recently purchased a used Yamaha RX-797 Receiver.
However it will only produce sound if the "pure direct" button is enabled.
Therefore i have no tonal control, balance control, etc.
With the "pure direct" enabled it sounds great but i want the option of it working without using pure direct.
Has anyone got any solution? I note that in 2009 bmwscoot had the same problem and while suggestions were made there's no mention of a resolution
many thanks in advance
neil
New guy here.
I recently purchased a used Yamaha RX-797 Receiver.
However it will only produce sound if the "pure direct" button is enabled.
Therefore i have no tonal control, balance control, etc.
With the "pure direct" enabled it sounds great but i want the option of it working without using pure direct.
Has anyone got any solution? I note that in 2009 bmwscoot had the same problem and while suggestions were made there's no mention of a resolution
many thanks in advance
neil
I would get the service manual, have a read and trace the signal path until I found the fault. Shouldn't take more than 10minutes to find the issue.
Download Yamaha RX-797 Service Manual
Download Yamaha RX-797 Service Manual
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Yamaha RX-797 issue
Thanks for the quick reply.
I have located service manual online so will give it a go
Thanks for the quick reply.
I have located service manual online so will give it a go
Why is electronics diagnostics always a race, takes me 15 minutes to remember where I left my multimeter....
Assuming you have basic tools (like a multimeter, if you can find it...) then check basic things like supply voltages all around on each PCB (not just one point), around all op-amps etc
Looks like an analogue only unit, just from the service manual when not in pure direct it looks like audio might pass through a tone control circuit (IC751)? Might be tempted to look around there.
Hi Guys and thanks for all your suggestions.
I am relieved and pleased to report that i have found found the solution to be far simpler than imagined.
The seller had removed the coupler pins from the rear of the unit.
And now that i've got them from him and put them in i have sound, even when the Pure Direct button is not pushed in. Thanks again
I am relieved and pleased to report that i have found found the solution to be far simpler than imagined.
The seller had removed the coupler pins from the rear of the unit.
And now that i've got them from him and put them in i have sound, even when the Pure Direct button is not pushed in. Thanks again