Humming coming from inside amp

[Bass so loud it HZ]

I jist got a surge 2k 4 channel amp off of ebay. Every piece of equipment i own is brand new but decided to pull the trigger on this amp bc i got a good deal on it. When i plug it in theres a humming coming from inside the amp. It powers up and everything seems to work. Anyone have anyclue what is causing the humming ?i have another amp identical to it that does not hum like that. Gains are all the way down..tia

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[spokey9 5,000+ posts]

I jist got a surge 2k 4 channel amp off of ebay. Every piece of equipment i own is brand new but decided to pull the trigger on this amp bc i got a good deal on it. When i plug it in theres a humming coming from inside the amp. It powers up and everything seems to work. Anyone have anyclue what is causing the humming ?i have another amp identical to it that does not hum like that. Gains are all the way down..tia

Does it have a fan?

 

[1aespinoza Premium Member]

Anyone have anyclue what is causing the hummin

On some old Fosgate amps, the induction coils would loosen up and start buzzing/humming. The fix was to drown them in glue.

 

[audiobaun 5,000+ posts]

Are you running a Pioneer HU?

 

[Bass so loud it HZ]

Does it have a fan?

No fan

 

[Bass so loud it HZ]

Are you running a Pioneer HU?

No kenwood. It does it with or without rcas hooked up tho. I dont think a pico cause this type of noise

 

[Bass so loud it HZ]

On some old Fosgate amps, the induction coils would loosen up and start buzzing/humming. The fix was to drown them in glue.

Im wondering if its something like this

 

[Jimi77 Premium Member]

On some old Fosgate amps, the induction coils would loosen up and start buzzing/humming. The fix was to drown them in glue.

I'd also guess the coils.

 

[Bass so loud it HZ]

I'd also guess the coils.

I mean does it cause any problems ?

 

[Firewalker]

Tbh I would contact the seller and warranty it if possible. Unless it was used then that would probably be the reason the person sold it. If he didn't mention the amplifier hummed/buzzed like that then the listing wasn't correct and you could fight to get your money back and return the item.

 

[1aespinoza Premium Member]

It could break itself off the solder joints.

I mean does it cause any problems ?

 

[dragon.breath 10+ year member]

I had an amplifier many years ago that one of the capacitor’s would squeal when it was cold. If you pressed down on it, the noise would go away. I super glued a piece rubber to the cap, so that the back of the amplifier put pressure on it. I ended up running it like that for a couple of years, till I sold the truck it was in.

If the amp is new, I would probably return it.

 

[Bass so loud it HZ]

I had an amplifier many years ago that one of the capacitor’s would squeal when it was cold. If you pressed down on it, the noise would go away. I super glued a piece rubber to the cap, so that the back of the amplifier put pressure on it. I ended up running it like that for a couple of years, till I sold the truck it was in.

If the amp is new, I would probably return it.

The amp is used so no warranty and i got it for a pretty decent price. It is the toroid transformer making the humming. The wire pulled away from the glue. I got it put back and there is now no noise. Aparently its a common thing with these amps

 

[Jimi77 Premium Member]

The amp is used so no warranty and i got it for a pretty decent price. It is the toroid transformer making the humming. The wire pulled away from the glue. I got it put back and there is now no noise. Aparently its a common thing with these amps

Nice. Enjoy the amp.

 

[audiobaun 5,000+ posts]

Im wondering if its something like this

Quite possible. Ive known and have had several Bnew amps that had a poor solder joint on the board of the RCAs as well.