Opening an Ensoniq ESQ1

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Opening an Ensoniq ESQ1

Postby pmanderson » Sat Sep 08, 2012 11:06 pm

I scored a nice Ensoniq ESQ-1 (plastic version) at a flea market for $50.
It has the "battery voltage low..." error so I wanted to open it up and take a look before I got a replacement.
But I cannot seem to open the top panel.
I've remove the 4 allen screws on the from panel but when I lift it, the panel moved up about a half inch and stops... as if its catching on something.

I'm afraid to put any more pressure pulling the panel up.
What gives?
Is there anything else I need to be aware of opening this up?
The service manuals offer no help.

Regards.



[UPDATE]
I ended up removing all the screws that held the hinge to the panel.
Once I had it off I could see what was catching.

The two top screw holes are notched underneath for the tabs that protrude from the rest of the plastic case.
The tabs contain the screw holes but the notch is deep enough that it can catch when lifting the panel.

All you have to do is lift both ends (left and right) carefully and evenly, and try to apply the pressure as close to the hinge near the top two holes (with the tabs).
All is well!

I owned an ESQ-1 (metal case) back in 1990... paid $1100 used. Loved it! It was my first and spoiled me rotten with the super easy programming interface and sequencer.

Sold it at a music store for $150 in 1996 and regretted it since.

Regards,
Patrick
Last edited by pmanderson on Sun Sep 09, 2012 3:08 pm, edited 1 time in total.
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Re: Opening an Ensoniq ESQ1

Postby Big Gnome » Sun Sep 09, 2012 12:28 am

I've noticed this too in my ESQ-1 and VFX. I don't really know what to make of it, but I just remove all the screws from the rear of the panel as well when I need to fiddle around in there. Bit of a drag, but it gets the job done. Congratulations, by the way--the ESQ is a positively awesome synth, and $50 is a fantastic price.
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Re: Opening an Ensoniq ESQ1

Postby rhino » Sun Sep 09, 2012 12:33 am

Welcome to the board!
** Mods may see fit to move this thread to "HELP" **
It's just a very tight fit. May help to slip you fingers under one end, then pull up sharply while holding DOWN (gently) on the other end. (twisting the lid slightly).
WARNING: Back up your sounds first!!!
To change the battery, you'll need to remove the leyboard (10 screws underneath the case) Mark the ribbon cable from the keys so you can put in back the same way (blows fuses if backwards)
Remove the metal shield behind the keys - seems like a crap-shoot as to whether they put one in or not.
Remove the little screws holding the mainboard to the bottom of the case. NOTE: the rear center screw among the jacks may (or not) be a threaded bolt - not a self-tapping screw...again a seemingly random design change.
Remove the nuts on the jacks on the rear of the synth.
Remove or raise the mainboard and unsolder the battery from the back side.
"A thing may seem impossible...until it's done."
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Re: Opening an Ensoniq ESQ1

Postby pmanderson » Sun Sep 09, 2012 12:40 am

Big Gnome:
Do you mean, remove all the screws holding the hinge?
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Re: Opening an Ensoniq ESQ1

Postby Big Gnome » Sun Sep 09, 2012 9:55 pm

rhino wrote:To change the battery, you'll need to remove the leyboard (10 screws underneath the case) Mark the ribbon cable from the keys so you can put in back the same way (blows fuses if backwards)

I think only earlier models are laid out like this--on mine, the battery is easily accessible toward the back of the board.
pmanderson wrote:Do you mean, remove all the screws holding the hinge?

That's what I've done in the past.
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Re: Opening an Ensoniq ESQ1

Postby rhino » Mon Sep 10, 2012 12:18 am

Yes, that's where it is. Just that the battery leads are soldered from the underside of the board. I know some owners cut or twist the flat leads off of the old battery and solder the new battery to them - so you don't have to remove the board. Personaly, I think that is a sloppy way of doing things and would throw a F-in' fit if a tech did that on one of my synths.
Route 66 studios does sell a battery holder and snap-in battery combo. (www.route66studios.com), but you still have to remove the board to mount the new holder.
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Re: Opening an Ensoniq ESQ1

Postby Big Gnome » Mon Sep 10, 2012 3:21 am

Fair point. Don't mind me... :)
"Sure that's fine in practice, but what about in theory?"
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