# 6128 Keyboard misbehaviour

**URL:** <https://forum.cpcwiki.eu/t/6128-keyboard-misbehaviour/509>\
**Category:** CPC hardware\
**Created:** [September 22, 2026, 1:43pm UTC](https://forum.cpcwiki.eu/t/6128-keyboard-misbehaviour/509 "2026-09-22T13:43:22Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Devlin](https://forum.cpcwiki.eu/user_avatar/forum.cpcwiki.eu/devlin/32/19_2.png) [@Devlin](https://forum.cpcwiki.eu/u/Devlin)\
**Post date:** [September 22, 2026, 1:43pm UTC](https://forum.cpcwiki.eu/t/6128-keyboard-misbehaviour/509/1 "2026-09-22T13:43:22Z")

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So, my 6128 is great. Works perfectly _ **but** _ the key action on it is terrible.

keys can stick physically, making the keys hard to press or type quickly on.

Is there anything that I can do (besides cleaning, already tried, didn’t help) to improve the key action on my 6128 keyboard?

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**Author:** ![pelrun](https://forum.cpcwiki.eu/user_avatar/forum.cpcwiki.eu/pelrun/32/219_2.png) [@pelrun](https://forum.cpcwiki.eu/u/pelrun)\
**Post date:** [September 23, 2026, 6:00am UTC](https://forum.cpcwiki.eu/t/6128-keyboard-misbehaviour/509/2 "2026-09-23T06:00:32Z")

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Lubrication. I used silicone spray lube on the insides of the holes in the top case half and the key action improved tremendously. You don’t need much - wipe it off well before reassembly and the thin film left over is all that’s needed.

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**Author:** ![revive8bit](https://forum.cpcwiki.eu/user_avatar/forum.cpcwiki.eu/revive8bit/32/462_2.png) [@revive8bit](https://forum.cpcwiki.eu/u/revive8bit)\
**Post date:** [September 23, 2026, 8:53am UTC](https://forum.cpcwiki.eu/t/6128-keyboard-misbehaviour/509/3 "2026-09-23T08:53:27Z")

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I just opened it and cleaned the keyboard and the membrane when I had that problem.

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**Author:** ![Devlin](https://forum.cpcwiki.eu/user_avatar/forum.cpcwiki.eu/devlin/32/19_2.png) [@Devlin](https://forum.cpcwiki.eu/u/Devlin)\
**Post date:** [September 23, 2026, 11:52am UTC](https://forum.cpcwiki.eu/t/6128-keyboard-misbehaviour/509/4 "2026-09-23T11:52:23Z")

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> [@pelrun](#):
>
> Lubrication. I used silicone spray lube on the insides of the holes in the top case half and the key action improved tremendously. You don’t need much - wipe it off well before reassembly and the thin film left over is all that’s needed.

I had thought about that, but I was worried about using anything that might be particularly chemical. I’ll have to give that a go. Given my other option was getting a mechboard for it, I think the lubricant spray is probably going to be cheaper.

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<div class="post-metadata">

**Author:** ![Devlin](https://forum.cpcwiki.eu/user_avatar/forum.cpcwiki.eu/devlin/32/19_2.png) [@Devlin](https://forum.cpcwiki.eu/u/Devlin)\
**Post date:** [October 4, 2026, 11:13pm UTC](https://forum.cpcwiki.eu/t/6128-keyboard-misbehaviour/509/5 "2026-10-04T23:13:27Z")

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I gave it a healthy spray, and cleaned the excess. The key action is great now and it doesn’t stick at all.