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David Nebenzahl David Nebenzahl is offline
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Default Cracking open a Galaxy Audio PA amp

On 9/15/2010 12:51 PM bob u spake thus:

On 9/13/2010 12:32 AM, David Nebenzahl wrote:

I inherited a repair job that I can't get started because I can't
get the damn amp open.

It's a Galaxy Audio Core PA5X140 all-in-one PA. It's a tough little
unit, with a die-cast metal chassis set into a thick rugged
plastic (polypropylene?) case, that can sit on top of a mike stand.
Similar to this one: http://galaxyaudio.com/MSPA.jsp. The front of
the chassis has 6 screws into the case, and there's one on the back
I removed, but I still can't get the chassis out of the case. I
tried prying the case, thinking there might be some cast-in lugs I
could open, but no luck, and I didn't want to risk chewing up the
edge of the case.

Does anyone have any idea how to open up this unit?


I have a Core PA5X140 hot spot sitting in front of me. single 5"
speaker with amp built in. It really did not want to open either. It
has 6 screws on the front. a screw on the back. On this unit, there
are 1/4" phone jacks on the rear. These are connected to the internal
circuit board. SO, the lock nuts MUST be taken off the phone jacks
before you start the removal process.

On this one, the front face is inset down into the rear shell. My guess
is stictation or such is a factor. First on this unit, i gently pried
around the deal with a razer blade. Then i used a very small flat blade
screw driver to try to break loose the case from the front. Then i kind
of beat on it to see if gravity would help it separate (face down). I
eventually got it apart, but it did not want to easily separate.


Thanks for the first and only really helpful reply in this whole damn
thread.

You, sir, are a gentleman and a scholar. Sure enough, removing the nut
from the phone jack allowed the whole unit to slip rather easily out of
the case (I used a heavy knife blade betwixt the case and chassis to
start it).

The amp appears to be fine; there's either a problem with the XLR mike
input jack, or with the mike cable we were using. (Can't test because I
have no XLR plugs.)

Thanks again.


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