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Preamp popping!

Salutations! 

I have a problem and was hoping to use our collective experience to solve it..

My preamp (dared mc-7p) produces a VERY loud pop through the speakers approximately 10-30 seconds after I power it up. I'm now concerned about blowing a tweeter. I can even see the 12" woofers move.

Obviously I can just turn the dared on first, then turn the amp on after a minute or so. But that's just hiding the problem. I'd like to solve it..

Ideas? I've tried nothing yet. My first inking is to try replacing tubes.. Good idea? If so, shall I start with the power or signal tubes? Again, my inkling is to start with power.

Assuming that doesn't work.. What else could it be? Some kind of capacitor gone bad?
128x128toddverrone
toddverrone's avatar
toddverrone OP
840 posts
 
Also, the popping occurs independent of the volume control. Your comment on muting the pre made me think of that, so thanks!
czarivey
5,756 posts
 
It's been discussed here gazilion of times!
Preamp first once it came up COMPLETELY than and only THAN amp.
The LOUD pop will be regardless of regardless of the preamp or amp you're using UNLESS you follow procedure RIGHT WAY.
toddverrone's avatar
toddverrone OP
840 posts
 
So, in a very indirect and too much coffe way you're saying that it's normal. There's nothing wrong.

I'm curious as to why it only is happening now... Ah, back to searching. 
donvito101
278 posts
 
You were given the correct answer from the others. Knock yourself out with your search! Read this.
http://www.primaluna-usa.com/basic-troubleshooting/
rodman99999
6,035 posts
 
If you’re saying that the popping has only started recently and you’ve been following the same turn-on sequence as before: Yes- It’s probably a tube issue. If it’s affecting both channels, check the rectifier. If only one channel, the signal tubes.  Those can be eliminated by swapping them from channel to channel and seeing if the pop follows the swap.
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