Immediate shut I have a Yamaha Receiver RX-630. It's 3 years old and had been working fine all thru these years. Just recently i saw a message on its deplay about " SP wires" and it immediately shut down after that. Now i am not been able to power it on. On pressing the power button, I hear the relay clicking sounds, which feels like shuts receiver off immediately due to some power circuitary mechanism. Any idea what's going on and suggestion how to receover fromt his. BTW - i have disconnected all speaker cables from the receiver but still seeing the same immediate shut down problem occuring. Any idea on how to further isolate the issue.

My reciever will do the same thing, but it will come back on. The funny thing is that during the summer we have absolutly no problems at all. Then when it starts to get cool out the reciver will go through bad days where it will shut down constantly. Then it will be good for a long time. I have also unhooked wires and it has done the same thing. It also does not matter what volume it is at. Very frustrating. My reciever will do the same thing, but it will come back on. The funny thing is that during the summer we have absolutly no problems at all. Then when it starts to get cool out the reciver will go through bad days where it will shut down constantly. Then it will be good for a long time. I have also unhooked wires and it has done the same thing. It also does not matter what volume it is at. Very frustrating.

my RX-V630 shut down after flashing up the 'check sp wires' message on the panel. it now point blank refuses to turn on, emitting only a brief click (and a whiff of burning on one occasion). Plug and circuit board fuses are intact. There is no visible scorching of the circuit board. I do not wish to electrocute myself so I have replaced cover and will leave unplugged for a couple of days before attempting to power on again without speakers attached. From reading other comments online it could be a fried transistor caused by a faulty speaker connection that was not caught in time by the circuit board. I anticipate having to drop £150-£200 on a replacement.

my RX-V630 shut down after flashing up the 'check sp wires' message on the panel. it now point blank refuses to turn on, emitting only a brief click (and a whiff of burning on one occasion). Plug and circuit board fuses are intact. There is no visible scorching of the circuit board. I do not wish to electrocute myself so I have replaced cover and will leave unplugged for a couple of days before attempting to power on again without speakers attached. From reading other comments online it could be a fried transistor caused by a faulty speaker connection that was not caught in time by the circuit board. I anticipate having to drop £150-£200 on a replacement.