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Some amps have fuses for the output stage. These may be accessible via the rear panel or you may need to take the lid off.
I've not googled for the particular model you have so it's just a guess.
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Gonna ask the obvious stupid question:
What's the setting of the SPEAKERS switch?-OFF
-1
-2
-1+2
-4 ohmsThere seems to be plenty of examples of the service manual (containing troubleshooting tips) online for free : )
ChasnotRobert
vilms5000
@owl
I posted this in the 'Dazzaa's sale thread' and was helpfully directed here, apologies for crosspost - basically, I picked up a lovely (looking) Rotel amp just before lockdown - RA-312. It worked perfectly when first plugged in. Then, my mate moved in with a full DJ/speaker set-up so we moved over to his gear and mine went back in its box. Not touched since, just tried to set it up again not getting the slightest hum/crackle/noise through (into epos speakers and just trying a phone via an aux lead) - I've checked the fuses which are fine. Power light coming on so seems like that side of things is working. Any ideas/things I've overlooked/stupid mistakes anyone can think of that might cause this? It was an ebay bargain so I'm not too fussed if I have to move it on but obviously I'd love to get it working again. Cheers