Cracking open a Galaxy Audio PA amp

and

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?

IME diamond saws are a more readily available and economical alternative. This is one of the major changes in tooling of this millennium - industrial diamonds are now so inexpensive that tools that effectively employ them are readily available in most big-box home improvement stores. That all said, this product seems to be composed of materials that are too soft and too temperature sensitive for effective cutting by diamond-tipped tools or plasma cutters.

Explosives. Now THAT'S the ticket!

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.

On 9/15/2010 9:52 AM William Sommerwerck spake thus:

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.

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

On 9/15/2010 10:33 AM William Sommerwerck spake thus:

Ah, so. Actually describes my problem here quite well; why doesn't this damn thing open up when I remove the screws, which seemed to hold the thing together quite securely?

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

Not everyone knows everything about anything. It's interesting that, even though you haven't seen the unit, you know "fer sure" how it fits together.

I've seen more than my share of remote controls that need tactical nuclear weapons to dismantle, so I feel /some/ sympathy for this poster.

If the OP is still listening... It might be that you have to "pull like hell" on the front. It might be that there are no latches, and the panel is /so/ tight that it's stuck. You might also try removing the speaker (if there are external screws holding it) and poking around inside.

Yes I'm sure because it makes sense. Unless you can think of something else that makes sense.

I would like to see a pic of the rear which i can't find. I often have to uncover hidden screws in things. I also have to do alot of prying on things.

greg

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.

bob

Many years ago, I had to take apart a Philbrick K2-XA (those of you old enough to remember this op-amp will realize how long ago). I couldn't figure it out and called the factory. One of the engineers told me the plastic case came in two halves and they were glued together at the factory. The cases were so cheap that when a unit came back for repair the case was split with a chisel, and after the repair was complete a new case was glued on.

Angle grinders are for amateurs and wimps. It takes a real prow to cut something open with a plasma cutter and still have anything left to repair. :)

Primacord.

A diamond saw? Save that to remodel your bathroom. :)

I like to say I would rather be wrong because I express a carefully considered point of view, than right because I agree with everyone else. So on that basis, I'm on your side.

I suspect that, as I said in the preceding post, something is badly stuck and won't come loose. By "stuck", I do /not/ mean "held in place with clips". I mean "jammed in some way".

"William Sommerwerck" wrote in news:i6r02h$b71$ snipped-for-privacy@news.eternal-september.org:

Because an average remote gets dropped at least a few times a week (my statistics), and is occasionally thrown at various inanimate objects and assorted life forms.

"thanatoid"

What a handle -- "the form of death".