Problem with my Hi-Fi

[FrankGalvin]

Hi. I really hope someone can help.

I have an old Denon amplifier (PMA-200) and tuner (TU-200). I had stored it away in my garage whilst I worked abroad for a few months. When I came home and took the Hi-Fi back home and plugged it in I found there was no power from the amp.

Fast forward a few weeks to today and upon close inspection I found that the 1.6amp fuse that connects to the power switch had blown and so I replaced it with a new one earlier today. I now have power again but I now also have a regular (cyclical) clicking noise from inside the amp. The click sounds like a loud 'pop' once the speakers are connected. I exchanged the fuse from the tuner to the amp in case it was something to do with the new fuse but the issue is exactly as it was. I guess that my garage was a little bit damp and has caused a component to fail.

Anyone any ideas as to what might be wrong?

[mxyzptlk]

Could be a relay clicking on and off. Is the unit working other than the clicking?
Does it have a fan and could there be something caught in the blade?

[FrankGalvin]

Thanks. I think it may be a relay too. It sounds as though something is trying to repeatedly switch itself on to amplify sound. I doubt that any foreign object has got into the unit as I only had the cover off for a few minutes to check the internal fuses connected to the circuit board (which were all okay).

After your tip-off I used Youtube to check for similar faults and yes, it does seem from looking at uploaded videos that it may be the input relay.

I just need to know what it looks like now so I can replace it. :-)