Are you talking about the rubber mat or the mylar sheets with the circuitry?
Unicomp refers to the rubber as the "blanket" and it does not serve any electrical purpose beyond padding and insulation. If that is what is stuck, I would soak it in water. Chances are, it was a sugar drink spill that got in there and hardened.
If you mean the clear layers with traces, you will have to be much more careful.
And, I agree, you should be able to do a bolt mod anyway. I have never encountered that and always took them apart and cleaned everything, but you could do it in place.
If you give up and just scrape it off, buy a new "blanket" from Unicomp for $10. It is thin white latex instead of the thicker black rubber, and I think it is better.
Fortunately it's not the rubber mat which is stuck. Just the nylon sheets and they have been glued in place.
It was probably some old practice since this Model M was manufactured in Feb 86
Fortunately it's not the rubber mat which is stuck. Just the nylon sheets and they have been glued in place.
It was probably some old practice since this Model M was manufactured in Feb 86
I must be losing my mind. I thought that the rubber mat went against the plate.
Was the keyboard working before you disassembled it?
Also, do you have a picture of the bottom sticker on the keyboard case?
Also, do you have a picture of the bottom sticker on the keyboard case?
Here is picture of the rear label if you meant that.Show Image(http://i.imgur.com/MxmhAhI.jpg)
I just bolt modded a 1390120 and it had the same issue with the circuit sheets stuck to the backplate. I thought they manufactured it this way. After the bolt mod, everything works fine. And everything worked fine before the bolt mod.
I just bolt modded a 1390120 and it had the same issue with the circuit sheets stuck to the backplate. I thought they manufactured it this way. After the bolt mod, everything works fine. And everything worked fine before the bolt mod.
Even though many people seems to disagree, I think the sheets are glued to the plate.
Even though many people seems to disagree, I think the sheets are glued to the plate.
I just bolt modded a 1390120 and it had the same issue with the circuit sheets stuck to the backplate. I thought they manufactured it this way. After the bolt mod, everything works fine. And everything worked fine before the bolt mod.
OK, this just got a little more interesting. Never heard of this but I'm far from the knowledgebase of Model M factoids.
Are the individual sheets completely glued to each other except for the pad points? Or are they only secured in certain spots?
I just bolt modded a 1390120 and it had the same issue with the circuit sheets stuck to the backplate. I thought they manufactured it this way. After the bolt mod, everything works fine. And everything worked fine before the bolt mod.
OK, this just got a little more interesting. Never heard of this but I'm far from the knowledgebase of Model M factoids.
Are the individual sheets completely glued to each other except for the pad points? Or are they only secured in certain spots?
I cannot say if they are completely glued to each other. I tried to pull them apart at one corner, and then I said, eh, that's enough.
I am curious, I have had at least 3 Ms from 1986 and none had this problem.
Bumping this because I think it's an interesting change in the way some early M's were made, and I'd like to add another data point. My 1390120 from May 1986 also had its membrane glued. Here's the rear label:Show Image(http://i.imgur.com/7aBNnFU.jpg)
From a different plant than EDI's. I'm curious as to how common these glued membranes actually are, they're rarely referenced. Additionally, this reddit user's 1390120 from Jan 1987 (http://www.reddit.com/r/MechanicalKeyboards/comments/2lruhg/my_dual_model_m_restoration_and_bolt_mod/) did not have its membrane glued.I am curious, I have had at least 3 Ms from 1986 and none had this problem.
fohat, do you have pictures of the rear labels for those boards? Were they 1390120's as well?