I have the Pioneer VSX-01 TXH receiver with Polk audio RM6750 compact 5.1 speakers. When I turn the volume up the receiver shuts everything off. Any suggestions?
Sounds like there is some fault in the audio output stage circuit of the Pioneer receiver. Contact any service technician. Troubleshooting to this device is not an easy work, that a normal user can do. If you wish to get some details; visit the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ Search the site by type in the "brand name" of your device, in the "Search box at the top right of the Homepage" to get gathered related posts.
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Sounds like the speaker circuit is overloading or the receiver is overheating.
Check to make sure all speakers are in phase. Pos to Pos. Neg to Neg.
Make sure receiver has plenty of cooling room.
Hope this helps.
Register and download the manual for free at retrevo.com
http://www.retrevo.com/support/Polk-Audio-RM6750-Speaker-Systems-manual/id/2771dj580/t/2/
Disconnect the input(s) and see if it hums in the absence of an audio source. A bad audio cable shield or unwisely-routed audio cables will allow entrance of unwanted signals from external power sources, magnetic fields, even dimmer-controlled track lights. Sometimes, simply reversing the orientation of the ac power plug can eliminate humming.
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