Philips NMS 8220 cursor keys are sticky

Par ramonsmits

Rookie (20)

Portrait de ramonsmits

30-12-2016, 12:14

The cursor keys on the NMS 8220 are not really working well.They seem to stick and don't easily go down. Only if you exactly press in the 'center' of the keys they seem to work.

Is this a common issue? Anything I can do? Maybe lubricate it or do some small modification?

I like the keyboard to play games like Nemesis as you often need to select powerups which doesn't really work with joysticks.

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Par hamlet

Scribe (4105)

Portrait de hamlet

30-12-2016, 12:51

I´m also prefering the keyboard for playing games.
Open the keyboard and cleaning the contacts should solve the problem of sticky keys.

Par Jipe

Paragon (1560)

Portrait de Jipe

30-12-2016, 14:10

in past i try remove the dust but the keys are tired and no working a long time

Par ramonsmits

Rookie (20)

Portrait de ramonsmits

30-12-2016, 14:16

Just finished cleaning it. I had cleaned the computer itself a while ago but didn't disassemble the keyboard. It had collected a lot of dust!

Rinsed the keys with soapy water and gently cleaned the keyboard film. Assembling required putting all springs back in which required a bit of patience Smile

It definitely is responding better but the cursor keys still don't really go back easily.

With sticky I don't mean sticky due to spilling soda, coffee or something else. Besides the spring there are a few plastic hooks and those don't really work nice with pressure is not applied exactly in the center.

Par hamlet

Scribe (4105)

Portrait de hamlet

30-12-2016, 17:34

Cleaning a keyboard is quite a lot of work.
If your old membranes are stucked, exchange your keyboard with a 8020 one. Fortunately both keyboards are identical. I tested it this afternoon and both machine do what they should.
8020 are easy to find and cheap to get, even in mind state.

Par Hrothgar

Champion (479)

Portrait de Hrothgar

30-12-2016, 17:57

I have the same issue, had it already since I had the machine for a year or something.

I blame you, Konami Hyper Olympics!

Par l_oliveira

Hero (534)

Portrait de l_oliveira

01-01-2017, 20:17

I have two VG8020s and while they're MSX1 computers, they use the exact same keyboard. They do the exact same thing.

Par Vampier

Prophet (2397)

Portrait de Vampier

30-09-2017, 22:14

yep same here... I think it's partially because of springs and partially of that extra small leg that has some wear and tear from usage over the years. I managed to get them working reasonably well after applying a tiny bit of sewing machine oil. It still sticks about 10% of the time which makes using the keys to player nemesis impossible.

Par sd_snatcher

Prophet (3557)

Portrait de sd_snatcher

01-10-2017, 15:08

After the cleanup, stretching the springs to make them stronger won't help?

Par hamlet

Scribe (4105)

Portrait de hamlet

01-10-2017, 15:28

As the springs are all the same on the whole keyboard, I would exchange the coursor keys with less important ones.
Or swap the whole keyboard with a 8020 one, as mentioned above.