Marantz 2230 yikes pop on start up

[PR2020]

Hello all,

Just finished a restore on an engraved 2230. It sounds great...only issue is a bad pop when I turn the speakers on. I'm aware of the normal pop that this receiver has...but I don't think this is it. I wait the 10 sec. for everything to power up and then hit the switch. What do you think? Once on it runs great. If I turn speakers off and back on several..times...no issue. This is just after it has sat for several hours. Video posted.

Thank you

 

[runningdog]

Wow that is a sharp pop. (edited because I had 1060's on my brain when I wrote my first response but the issue is with a 2230).

I find that the start up pop is louder after I do a rebuild on a 2230. Were the values of the filter and coupling capacitors increased significantly? When I rebuild a 2230 I use a Nichicon Gold Tune Type II 6800uF/80V for the filter cap. I used to boost the coupling caps to 4700uF/80V. I attributed the louder pop at startup to this. I've gotten more conservative and now I use 2200uF/80V Gold Tunes for the coupling caps.

What did you use in this 2230? Is the pop reduced significantly with a headphone adapter jack plugged in? And, can you isolate the source of the pop to the main amps by unplugging the Main In/Pre Out jumpers before powering up?

 

[Warren-Oates]

Normal 2230 popping. As mentioned plug a headphone adapter in, you should have no more popping.

 

[patfont]

LOL, sounds like 15" Pioneer CS99a speakers!