Markbass f1 takes a minute before any sound

[seanobrien]

Hi folks, I have a Markbass f1 amp, I've had it for a few years always works perfect but lately when I turn it on, it takes about a minute before it kicks in and any sound comes out. Just wondering if anyone else has came across this problem with a Markbass amp. Appreciate any help or advice. Thanks 

[fretmeister]

Mark Bass always have a delay between turning on and making sound. It's part of the speaker protection system.

An entire minute does seem to be on the long side though. I've had a lot of MB heads including an F1 and I don't remember any of them going longer than 30 seconds. My current AG1000 is about 10 seconds I think.