I have a pioneer reciever VSX-5300 had it since 87 ,it works fine just now when I turn it on the display does not turn on untill reciever warms up within 40 minutes witch tells me a loose connecti0n

SOURCE: pioneer vsx-d307

You have a flashing "mute" on the display?...accordianman

SOURCE: Connecting a sub-woofer to Pioneer VSX-453 surround reciever

I got the same issue. But, I go ahead hooked it up two banana plugs on teh VCR outlet. It works fine on my Cerwin Vega Sub.

SOURCE: Pioneer VSX-454 Receiver

ANY NEW universal REMOTE MADE 1984-2001

SOURCE: Pioneer VSX-D411 receiver "Amp Error" message

Hello,
Unfortunatelly your receiver has failed. The front panel is telling you one of the power modules is probably bad. Not an DIY type of repair. These parts are near $40.00, plus cost of replacing.
Look at options to replace your trusted receiver with a new one.
Good luck

SOURCE: Pioneer vsx-819H: MCACC setup won't display on tv

Its because the pioneer does not display menu options through hdmi. You have to hook up basic yellow composite to monitor out.