Yamaha RX-Z9 A/V receiver Microphone port issue

[ljbrandt]

I just came into a used Yammy RX-Z9 A/V receiver. The front display shows 'Mic In' even though there is no microphone plugged into the front jack. This is preventing me from getting any sound out of the unit except for analog "pure direct" mode. There doesn't appear to be anything jammed into the mic port and I have tried inserting and removing (and twisting and wriggling) the calibration mic plug. I even tried a q-tip with a bit of alcohol to no avail.

Any help would be greatly appreciated as this is a well built receiver/amp foiled by a small input port!

[zomi]

Re: Yamaha RX-Z9 A/V receiver Microphone port issue

A bit more evasive solution
would be to dismantle it and delsoder the mic input and see how it performs..

[ljbrandt]

Re: Yamaha RX-Z9 A/V receiver Microphone port issue

I wonder how much dismantling I'd have to do before I could access the mic input solder point....

[budm]

Re: Yamaha RX-Z9 A/V receiver Microphone port issue

Service manual:
You have to sign up.
http://www.hifiengine.com/manual_lib...ha/rx-z9.shtml
Check the Voltage as shown.

[ljbrandt]

Re: Yamaha RX-Z9 A/V receiver Microphone port issue

Service manual:
You have to sign up.
http://www.hifiengine.com/manual_lib...ha/rx-z9.shtml
Check the Voltage as shown.

Wow, that looks right on the money! But is this something a novice should be messing with? I know how to solder/de-solder...but perhaps I should stop there?!