2. amps-preamps
  3. 156741-122106

Repair help please

Hi everyone,

I bought a refurbished Dayton Audio SA 1000 subwoofer amp that I hope is worth fixing.

After a few weeks, it started to cause a pop sound at volume levels approaching moderate and above.

A few weeks later, I noticed it happening more often when raising the volume from a lower (low enough to speak to someone in the room) to moderate level.

The unit also developed a noticeable mechanical hum and made the subs pop quite loud the last 2 times when powered off.

Parts Express reimbursed me with no need to ship mine back as they can't do anything with refurbished returns.

Duke at Audio Kinesis immediately shipped me a brand new replacement before I had a chance to send him a check!
Beginning to think the worst part of missing Axpona is not having the opportunity to meet Duke in person!

So I have a working Dayton now.
Such a nice amp!  Would be great to have the other one repaired.

Anyone else experience this? Is it worth fixing?  

System:
Laptop ->USB -> Hegel H190 ->RCA->Dayton SA1000 -> 4 subs in Series/Parallel 



  
hleeid
hleeid OP
219 posts
 
Appreciate the long shot.  
There are a few local places I can look into.

I like the experiment idea though!  Never opened up any components.

Would be good to have the opportunity to examine the parts, see what/how things need to be cleaned, etc. 
Watch some videos on this, ...
hleeid OP
219 posts
 
@rodman99999 - I'll take a look when I open it up.  Would replacing a filter capacitor be expensive? Complicated?
rodman99999
6,156 posts
 
Again; I’m not familiar with your particular amp, or- it’s power supply.      Regarding the usual, unregulated PS; it’s typically one of the easier repairs, one can make.      Easy to spot, too.      Look for the largest capacitors, in the component.      Look around them, for leaked electrolyte, or- a pushed out, rubber, pressure release, somewhere around the terminals (you’ll know what that is, if it’s there).      Don’t touch those terminals, unless you’ve discharged the capacitors (ie: with a screwdriver, heavy wire, etc), a couple times each, a few minutes apart.                 Some amps have bleed resistors, that do that for you.      Some don’t.
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