Amp says "protected" after power up. already changed fuse
SOURCE: A-SV210 on protect mode
In a generic sense I would check all the speakers to make sure theyre connected at BOTH ends.
I'm not sure who makes your receiver but if I did, I might be able to give more input.
To answer your question;
Your amplifier goes into protect mode when it detects a fault or condition that could damage the speakers and/or the output stage.
Often caused by shorted outputs.
Although this does`nt tell you much on how to fix this problem, the best help i can give you at this point is to tell you to have it looked at by a repair shop.
Hope this help good luck
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