Vintage Carver HR-875 Dolby Pro Logic Receiver - parts or repair

Description

this amplifier worked great until last week, now it turns on, but relays just keep clicking. about every 30 seconds you hear a relay click, then 2 seconds later again, this will keep repeating every 30 seconds. there is a small dent on the rear corner as shown, cord has been replaced at some time. face is in good condition, i just can't seem to get my camera to take a good picture. this is sold for parts or repair.