I bought a 6230 amp and i just have a question about it: After i push the on button it takes 3 minutes for the amp to start to play. The standby lamp works and is on for 3 min and then the amp clicks and standby is off and the amp plays. Is this normal for it to take 3 min or ?

I think the amp is 17 years old and i opened it for a look and there is NO dust inside it, perfectly clean. It has been installed so there are no scratches on the front and it looks like new.

Happy new year, mats