2. amps-preamps
  3. 149301-106145

LOUD popping Rogue Magnum

ugg! I left my lovely Rogue 99 Super Magnum pramp on for more than 17hours. It woke me up in the middle of the night with VERY LOUD banging noises.  I thought we were having a home invasion!  Fortunately my screaming who’s there? who’s there?  did not wake my wife.
I had recently had the system made into a super at Rogue.   When it was returned from them it sounded good. It now sounds incredible for 8-10 minutes. After the pre warms up there is popping on both channels. It’s very regular, pop.....pop....pop.. and very loud.  This preamplifier has a separate power supply, as well as the internal phono pre. It makes this noise with any input source at all!  It’s not static. It is extremely regular after the pre warms up.  It gets much louder over a few minutes.  My very good repair person in Denver (  Electric City Repair ) suggested tubes as the issue. I have 14 different tubes for 8 slots - I tried all of that.  I think it’s a capacitor in the power supply. Changing those caps is not part of the super-magnum upgrade. Nor is changing caps in the Phono pre. I did not change the tubes in the Phono pre as the same issue occurs with the CD player, regardless.  Can anybody help with this pop, pop, popping? 

Bentunderground
128x128michaellent
michaellent's avatar
michaellent OP
205 posts
 
@bjesien 
Nothing else is different except that I left the tube pre on, too long, and something overheated.  I would be willing to replace the  Power supply Caps (15-20 years old) myself if someone could tell me the that is probably the real problem. I can do that part easily but I just can’t diagnose the problem.

Bent
racamuti's avatar
racamuti
362 posts
 
Hi, I had a popping sound coming from my system that was driving me nuts. A friend suggested that I turn off my wifi, which did the trick.

easy to try.Good luck!TISH
millercarbon's avatar
millercarbon
12,531 posts
 
What did Rogue say when you called them?

erik_squires
16,373 posts
 
Here's an experiment:  Put a fan on it. If that slows, or stops the issue, you definitely have a part that's suffering from heat.

But yeah, it sounds like a bad cap.
michaellent's avatar
michaellent OP
205 posts
 
Thanks Erik. I’ll try that fan idea next. The pop noise is coming from both channels at the same with equal intensity.  For no reason except that, in particular, I suspect Power Supply.  You?
 Change the PS caps?

Michael
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