Sony STR-DE415 loud pop noise when cold


2013-04-25 3:13 am
Hi there
I have a Sony STR-DE415 I only use it as as STEREO amp whin a couple of pioneer speakes. Some day it started to make this loud pop noise on one of the channels. It just makes it a few times and then, after a few minutes, it goes away. It is like the amp gets "warm" and that makes the pop sound go away.
Any clues?