Hello everyone

I need some help with a JVC JA-S11 amp I got from my father if anyone knows more about them. He had it in storage for a while but gave it to me as a housewarming present.

It mostly works fine but there's one problem:

Usually on this amp after you turn it on you'll hear a click after a few seconds and then the amp starts working. When I turn it on the light comes on but no click. I opened it up to have a look and it started working. Problem is the light no longer comes on but you can hear the click from the relay (I have no idea what it is, someone told me it was the relay) and the amp works.

After I moved the amp a bit the light came on again and the amp stopped working and there's no more click when I power on.

Can anyone help me here? Thanks