Cracking open a Galaxy Audio PA amp

[David Nebenzahl]

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?

 

[thanatoid]

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 noticed that sometimes there is a screw (or more than
one) under one (or more) stick-on label(s).

 

[David Nebenzahl]

Specifically, No....But I have sometimes found that they like to hide screws
underneath the pasted on rubber feet, so you might investigate that.

Nope, no feet on the bottom.

Also, inspect the cover carefully to see exactly which panels are
welded to what other panels, and you might get a clue as to where the
screws have to be in order for it to come apart......

Nothing's welded to anything. Just a diecast chassis set into a plastic
case that surrounds it.

 

[David Nebenzahl]

I have noticed that sometimes there is a screw (or more than
one) under one (or more) stick-on label(s).

Good idea, but no screws lurking underneath labels here.

 

[N_Cook]

Nope, no feet on the bottom.


Nothing's welded to anything. Just a diecast chassis set into a plastic
case that surrounds it.


--
The fashion in killing has an insouciant, flirty style this spring,
with the flaunting of well-defined muscle, wrapped in flags.

- Comment from an article on Antiwar.com (http://antiwar.com)

Tapping all over with screwdriver handle listening for tight spots?

 

[Meat Plow]

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?

You don't have the intelligence to open a can of soup.

stupid x-post to RAT defeated.

 

[Spamm Trappe]

You don't have the intelligence to open a can of soup.

stupid x-post to RAT defeated.

As usual, when you have absolutely nothing of value to contribute,
you go right ahead and inject your vulgar, insipid banalities anyway.

 

[David Nebenzahl]

Sometimes loudspeakers (I see this product as a powered loudspeaker)
are entered by removing the largest driver.

Sorry, not helpful. Everything, including the largest (and only) driver,
is behind the diecast front panel/chassis. Nothing accessible from the
front except for the 6 screws I've removed.

 

[David Nebenzahl]

As usual, when you have absolutely nothing of value to contribute,
you go right ahead and inject your vulgar, insipid banalities anyway.

Thank you for that. I know I'm certainly not alone here in my opinion of
Meat Head.

 

[David Nebenzahl]

Try emailing Galaxy and asking them ? They can only say no ...

Head up your email "Urgent - Please Pass to Service Department" You might
strike lucky and get a secretary that prints it out and passes it on without
'filtering' it. In my experience, most engineers don't mind helping others,
and unless the company has a really strict 'no help' policy, quite often if
you can get as far as direct communication with an engineer, you can get the
information you need.

Fine idea, and was my next tactic. As you say, what have I got to lose?
It'll be interesting to see what kind of response I'll get. I've had
good luck with this approach in the past.

 

[Adrian C]

Nothing's welded to anything. Just a diecast chassis set into a plastic
case that surrounds it.

Do the control knobs on the front come off to reveal spindle nuts?

 

[PeterD]

Thank you for that. I know I'm certainly not alone here in my opinion of
Meat Head.

Hell, it's all the life that meaty has...

 

[thanatoid]

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

You or someone you know has a digital camera. Take a photo of
the fucking thing, all sides, and post it to a binary group of
your choice or to some stupid site like photobucket or flickr.
It's will considerably improve your chances of opening the
thing.

I for one would like to see what the hell we are talking about.

"Similar to this one" does NOT cut it.

 

[N_Cook]

At least no one has suggested a Plsma Cutter! ;-)

A ring cutter yes, as a last resort, to make an inspection hole.
Somewhere there is unlikely to be active stuff and where a blanking plate
could be fixed over the hole and maybe another hole if the first reveals
nothing useful. Where an "endoscope" would be useful.

I'm assuming you've run a piece of rounded off dowel over any decals for
covered screwpoint recesses.

 

[N_Cook]

Nah! "Angle grinder" as they always say over on uk.d-i-y

Arfa

When you loose neg bias on audio output bottles and a hole is burnt through
the anode plate and up to the point the the glass melts and vacuum is lost ,
is that plasma cutting?

 

[Dick Pierce]

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

At least no one has suggested a Plasma Cutter! ;-)
Nah! "Angle grinder" as they always say over on uk.d-i-y
diamond saws
endoscopes
ring cutters
drop it
tap it with a screwdriver handle
unscrew it
screw it

Explosives. Now THAT'S the ticket!

 

[William Sommerwerck]

This product appears to be the pro-audio equivalent of most remote controls.

I'm sure most people in this group have noticed how remote controls are
generally held together with screws /and/ near-unreleasable tabs. I've never
understood why both are needed.

 

[David Nebenzahl]

This product appears to be the pro-audio equivalent of most remote controls.

I'm sure most people in this group have noticed how remote controls are
generally held together with screws /and/ near-unreleasable tabs. I've never
understood why both are needed.

No, it's not, and you're misunderstanding the packaging here.

There's a diecast metal front panel which covers the entire front of the
unit, with a deeply set grille for the speaker. Six screws attach the
metal panel to the plastic cabinet.

The plastic cabinet is ONE PIECE, totally seamless, covering the
remaining 5 sides. So it's not a clamshell like most remotes or
similarly packaged electronics.

 

[William Sommerwerck]

I'm sure most people in this group have noticed how remote

No, it's not, and you're misunderstanding the packaging here.

My point was about the /philosophy/ of the packaging. Why belts+suspenders,
when only one is needed?

 

[Meat Plow]

My point was about the /philosophy/ of the packaging. Why
belts+suspenders, when only one is needed?

I'd have to LMAO if the idiot still hasn't figured out how to get it
apart.

I'm sure it's snapped/latched together especially if the latch points are
not visible. It's a well adopted method to anyone who has even minor
experience