DX7 mk1 Membrane replacement

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theglimmerroom
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Re: DX7 mk1 Membrane replacement

Unread post by theglimmerroom »

I don't know if this will be any help but I have covered my cracking membrane with clear sticky-back plastic, so far so good its been a month maybe a bit more. All buttons still as responsive as they where before and it has given it enough strengths so I will not get any more splits TBH if it gives me a few more years out of mt DX7 i will be happy. Not sure of the long term of this solution so its your call if you try it.
Andy


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Saul
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Re: DX7 mk1 Membrane replacement

Unread post by Saul »

Hi Andy and welcome to yamahamusicians.com :)

Good fix for the problem and probably the best solution until someone comes up with a way to create a new membrane. Perhaps some sort of screen printed vinyl or thing plastic sheeting. Can't be that hard to do.


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andy condon
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Re: DX7 mk1 Membrane replacement

Unread post by andy condon »

I was kinda desperate lol I toyed with the idea of having something printed but the thought of getting the graphic to line up with the buttons filled me with dread, besides I want to spend what little spare time I have using it :)

andy


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Saul
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Re: DX7 mk1 Membrane replacement

Unread post by Saul »

It must be doable.

Take a look at this custom DX7. If the guy is able to do this then surely there IS a way we can replace the panel ourselves?
Screen Shot 2018-03-05 at 19.22.05.png
Screen Shot 2018-03-05 at 19.22.47.png
Screen Shot 2018-03-05 at 19.22.33.png
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Saul
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monsterjazzlicks
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Re: DX7 mk1 Membrane replacement

Unread post by monsterjazzlicks »

Saul,

Gee, that DX7 replacement looks amazing! Even better than the original!

Cheers,

Paul


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Saul
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Re: DX7 mk1 Membrane replacement

Unread post by Saul »

Yeah it's quite impressive what he does.

I believe that DX7 is from the same guy who customised my White Roland Fantom G6 many years ago.
custom-synth-white-roland-g6.png
It was originally done for Gem Godfrey of the Prog Rock group 'Frost' which is why it has their logo on the right hand side.
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monsterjazzlicks
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Re: DX7 mk1 Membrane replacement

Unread post by monsterjazzlicks »

Saul,

Are you bothered about having the FROST logo there?

Paul


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Saul
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Re: DX7 mk1 Membrane replacement

Unread post by Saul »

monsterjazzlicks wrote: Fri Mar 09, 2018 1:56 pm Saul,

Are you bothered about having the FROST logo there?

Paul
I wasn't at the time. I don't have it anymore by the way, sold it a few years ago...yet another keyboard I wish I had kept.

I did remove the logo before I sold it though. Jem had already tried to remove it but he thought it was part of the overall paint job so stopped. However with a little careful testing I found it was actually put "over" the paint job so it came off eventually without leaving any trace :)


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Cringey
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Re: DX7 mk1 Membrane replacement

Unread post by Cringey »

Hi everyone, first post...

Not to beat a dead horse. I just came into possession of a dx7 mk1 and 2 of the buttons have slight cracking.

One user talked of sticky tape to cover them. Do you mean normal clear scotch tape? Did this mean open it up and put it underneath or put it on top?

Did any one source replacements for the membranes?

Thank you for your time.


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Miks
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Re: DX7 mk1 Membrane replacement

Unread post by Miks »

This spring I purchased my first DX7 back and gave him a good service before selling it again. Amongst others there were some cracks at the membrane foil which I 'sort of' repaired by using some self-adhesive Kapton tape - see pics:
Folie Bild1.jpg
Inside:
Folien-Reparatur 2.JPG
Fixed:
Folien-Reparatur 3.JPG
After having fixed it the cracks were hardly to see on the surface. Maybe this kind of fix is suitable for you too?
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My (key related) gear (in alphabetical order):
Ferrofish: B4000+
Kawai: K1 II
Korg: M1 (up'd to EX, w/ 'Cool Blue'), M1REX (w/ 'Cool Blue'), Poly-800
Roland: D-50, D-110, D-550, PG-1000
Yamaha: AW1600, DX7IID (w/ 'Cool Blue'), EX5R, RM50, RX5, SY99 (w/ 'Cool Blue'), TG500,
TX-802, YMM2
Sector101: SYEMB05 (5x), SYEMB06 (3x), EXFLM2 (1kit), MCD Sweet16 (1x), DataBlade32 (1x),
WaveBlade 8MB Card (1x) & 1x Programmer Unit for WaveBlade
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Cringey
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Re: DX7 mk1 Membrane replacement

Unread post by Cringey »

Miks wrote: Fri Sep 27, 2019 9:56 am This spring I purchased my first DX7 back and gave him a good service before selling it again. Amongst others there were some cracks at the membrane foil which I 'sort of' repaired by using some self-adhesive Kapton tape - see pics:
Folie Bild1.jpg
Inside:
Folien-Reparatur 2.JPG
Fixed:
Folien-Reparatur 3.JPG
After having fixed it the cracks were hardly to see on the surface. Maybe this kind of fix is suitable for you too?
Thank you Miks.

On all the internet I could not find a picture of the back side of the buttons. (Did not want to remove the board before seeing how it looks.)
It looks like it may work for both of them.

One of the buttons #32 has the crack right at the edge of the hole. I didn't notice it when I bought it.

Was it a matter of just unscrewing all the screws on the button board, moving it aside and patching them up?

I wonder how it would be to just roll Kapton tape across all the buttons.

I am waivering between fixing it and keeping it and fixing it and selling it. (Hah. All my life I wanted one)

Thanks again.


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Miks
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Re: DX7 mk1 Membrane replacement

Unread post by Miks »

Upper half of housing from the inside (note the division bars):
Division bars.JPG
That's the reason why you can't "just roll Kapton tape across all the buttons" 8O I cut off some short pieces and applied them carefully using tweezers.
This is how both button pcb's look when unmounted...
Small:
Button pcb small.jpg
Large:
Button pcb large.jpg
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My (key related) gear (in alphabetical order):
Ferrofish: B4000+
Kawai: K1 II
Korg: M1 (up'd to EX, w/ 'Cool Blue'), M1REX (w/ 'Cool Blue'), Poly-800
Roland: D-50, D-110, D-550, PG-1000
Yamaha: AW1600, DX7IID (w/ 'Cool Blue'), EX5R, RM50, RX5, SY99 (w/ 'Cool Blue'), TG500,
TX-802, YMM2
Sector101: SYEMB05 (5x), SYEMB06 (3x), EXFLM2 (1kit), MCD Sweet16 (1x), DataBlade32 (1x),
WaveBlade 8MB Card (1x) & 1x Programmer Unit for WaveBlade
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Cringey
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Re: DX7 mk1 Membrane replacement

Unread post by Cringey »

Miks wrote: Fri Sep 27, 2019 1:39 pm Upper half of housing from the inside (note the division bars):
Division bars.JPG
That's the reason why you can't "just roll Kapton tape across all the buttons" 8O I cut some pieces and applied them carefully using tweezers.
This is how both button pcb's look when unmounted...
Small:
Button pcb small.jpg
Large:
Button pcb large.jpg
Thank you makes sense now. (Sorry if I gave you a fright of someone just rolling tape all across the membrane.)

Thank you for taking the time and pointing it out to me!


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Miks
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Re: DX7 mk1 Membrane replacement

Unread post by Miks »

Cringey wrote: Fri Sep 27, 2019 2:45 pm Thank you makes sense now. (Sorry if I gave you a fright of someone just rolling tape all across the membrane.)
No worries - you didn't gave me that kind of fright 8) If those division bars had not been there I think I'd placed a strip of Kapton across a complete row of switches on the downside of the membrane foil.
Thank you for taking the time and pointing it out to me!
You're welcome! Glad to help if I can. :D


My (key related) gear (in alphabetical order):
Ferrofish: B4000+
Kawai: K1 II
Korg: M1 (up'd to EX, w/ 'Cool Blue'), M1REX (w/ 'Cool Blue'), Poly-800
Roland: D-50, D-110, D-550, PG-1000
Yamaha: AW1600, DX7IID (w/ 'Cool Blue'), EX5R, RM50, RX5, SY99 (w/ 'Cool Blue'), TG500,
TX-802, YMM2
Sector101: SYEMB05 (5x), SYEMB06 (3x), EXFLM2 (1kit), MCD Sweet16 (1x), DataBlade32 (1x),
WaveBlade 8MB Card (1x) & 1x Programmer Unit for WaveBlade
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Rara
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Re: DX7 mk1 Membrane replacement

Unread post by Rara »

has anyone thought of 3d printing slightly extended buttons like the above photos to slightly protrude through the membrane and print
out a new overlay with holes cut to suit? seems like an easy and cheaper alternative to have a new membrane made, nor more splitting
membrane. you'd sort of have dx7II style buttons then. I wish I still had my dx7_1 I'd do it. :-)
Ever since 3d printers became available I have wanted to do that to my cz1000.

Rara 0-)


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