Korg Poly800/EX800 Users

I have repaired contacts on an Alesis MMT-8 before now by using a paper hole puncher, to punch out circles from Aluminium/Aluminum tape used in the contruction industry. It can be bought of ebay quite cheaply or from any hardware store, but it is not as good as the keypad repair kits I mentioned. The Circuitworks repair kit I mentioned is reputedly tested for 500,000 keypresses MTBF.

I have not used the 3m dots. I have however used 3m stick on patches to repair punctures in inner tubes. Those guys know how to make a good adhesive that's for sure. This is probably the easiest way to do it.



________________________________
 From: bimmerfan222 <bperkins211@...>
To: korgpolyex@yahoogroups.com 
Sent: Monday, 30 July 2012, 12:57
Subject: [korgpolyex] Re: key contacts
 

  


>       "There is NO WAY to clean the contacts so they work again contrary to popular internet BS. You must replace the old carbon/conductive ink coatings on the keypad to make them work. "

I've not seen the contacts for my board yet.. just what diameter, shape & size is the contacts on our boards?

I have managed to locate a supply for custom 3M Carbon Ink stickers that are approx 2.5mm diam. round (pips).  They come off a 2cm wide tape.  So there are areas around the circles to cut larger areas out if you wish.

Cost for 12 pips(2cm x 2cm) tape is about the same as the spray can carbon.  You could make 24 pips out of it if you use the spaces between pre-stamped pips.

Check out-

http://sounddoctorin.com/synthtec/parts/key.htm#polycontacts

for info and purchase. 

Bob's a really cool synth tech guy that helped me repair a coffee soaked/damaged contact board on a Roland.. not only did he have these pips, but he also had a contact board PCB to fix the carbon surface issue it had That repair couldnt use the stickers, it'd needed paint.. and he sold me a couple replacement plastic keys.

He also has a Poly 800 or two around for parts last I checked...