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Problem with turn off transient


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#1 hoanglucky

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Posted 28 January 2014 - 11:52 AM

I repaired some old amp such as Crown 800, 1400, 2400, 3600. Some time, it's fault with turn off transient, it's "pop" very large for speaker, but I don't know why? Anybody could help me please!

#2 joust

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Posted 28 January 2014 - 12:47 PM

Hello Hoang,

Does this pop happen to both channels? At the same time?
How about turn-on delay? Do we have the four to six seconds delay?

A.

#3 hoanglucky

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Posted 28 January 2014 - 08:11 PM

Hi Joust!
It's always pop on 2 channel and very large when I turn it off. I think turn on delay ok, about 6 s, it 's pop very low when relay is operate,  I think the problem relate to capacitor, I changed 2 big capacitor of good amp to old amp but it's still there. Did you seen the similar amp?

#4 joust

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Posted 30 January 2014 - 08:55 AM

Let me get back to you soon on this. I doubt very much it has to do with the psu per se.

A.