Bad Amp???

[ghetto waggon]

Purchased a used Alpine Mrp-f320 5 channel amp off the forum.
Only channel one (both + and -) on the gold output connectors on the amp seem to be putting out any signal.

I double and triple checked the wiring, and then it hit me to try other speaker connections in that one channel. All four speaker sets work in the channel one location.

I am using a 4 ch david navone LOC. Could there possibly be something not turned up on that (internally?)

Or is your first guess that I got screwed out of an amp?

 

[ghetto waggon]

should i open the amp?

 

[c0nfus3d]

yup its broken just like your HU...j/k

 

[Protege52003]

was everything working before you hooked up your amp and LOC?

is this a raplacement amp?

 

[ghetto waggon]

everything works, head unit, components and rear coax. sub is still new out of box so I assume it works as well.

FL FR RL RR all sound fine when amped through the channel 1 outputs on the amp.

I drive a p5 so I didn't have a stock amp and sub. I am amplifying the factory 6 disc

 

[ghetto waggon]

?

 

[chuyler1]

Did you try swapping around the RCAs?

 

[1sty]

Swap around the RCAs like Chuyler1 mentioned as this will rule out the loc.
Also, how are the dip switches on the amp set?

 

[ghetto waggon]

I'd tried everything but playing with the pots inside the loc.
the wiring is correct.

It seems as if the amp was dropped, the gold speaker output section was tilted down and almost dented inwards. It had some play in it. I decided to open it up. Three of the screws were attached to an inner piece and snapped as I was opening the case. the power no longer switches on.

I'm just going to order the 450

 

[1sty]

who the hell sold you the POS?
Is the board broken or is at busted solder joint?