Thanks for suggestion. Checked parts list as well as schematics and even google search. No relay in its circuits.

I have a Kenwood KA-35000 amp. I've recapped all the electrolytic capacitors recently. When I first turn the unit on I get a few second hum and a small pop sound on speakers and then silence. I am able to play music, etc without an issue after wards. Because it occurs only at the initial powering up each time and only last a few seconds I am having trouble figuring out how to troubleshoot.

The one other thing I noticed that during the powering off there is a slight hum and quiet pop sound. This I hadn't noticed before. The KA-3500 has a muting circuit that when unit is powered off...

At 66 years old I decided to try and learn something new. As a young man I remember dreaming of owning a "new age" stereo system rather than being stuck with my parents old music player.

I eventually got a part time job and saved up enough money to buy a "sale" receiver at a radio shack. Wasn't the dream stereo I dreamed of but I got to play my kind of music and rather loudly 2 😀.

Fast forward to now. Retired and reimagining the old times. I looked at the old vintage equipment and still like the look, feel and sound.

My first...