Help! broken "C" button

By Tubateacher

Supporter (5)

Tubateacher's picture

12-08-2021, 09:37

After finding my beloved MSX HX-10 up in the attic recently, I managed to source a cable to connect to the tv and she works perfectly, except for one small problem ....the "C" button doesn't work, all others are fine.

Am I correct that to run a game on cassette you used to tyrp run"cas" ? (I can't remember!)

and if so does anyone know how to repair the c key or call up the C character without the need to press it on the keyboard

Thanks in advance,

A man who is so close yet so far!!!!

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By Pencioner

Scribe (1479)

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12-08-2021, 10:07

in HX-10 the keyboard doesn't use membrane, you have individual keys, but each key has a conductive part on a rubber inside. when aging, it starts having a resistance, and key stop working. i had similar problem with an old HX-10 i bought 4 years ago. my brother helped me to fix that (he's much better at this kind of stuff) by desoldering each button, opening it, and placing some conductive paint to the rubber, then putting everything back when it dries. he did for all the keys to avoid problems in future, not only for a couple of non-working ones. after that it works of course flawlessly. i don't think there's other way of fixing it btw. you can try to measure resistance of each key (i got 80 Ohm and more for problematic keys though), select ones which are going to get problems while yet working, and fix them together with non-working C key, f.e.

--- UPD: ---
you still can try running game by typing little bit more. if you type
print "run"+chr$(34)+chr$(99)+"as:"
then put cursor on text it printed - run"cas: and press enter, you'll get it. just as a temporary solution to test cassette loading while kbd is not fixed

By Briqunullus

Champion (428)

Briqunullus's picture

12-08-2021, 10:12

But how to type chr$ without c-key?

By Meits

Scribe (6458)

Meits's picture

12-08-2021, 10:15

press F1 and remove "olor" Smile

By Briqunullus

Champion (428)

Briqunullus's picture

12-08-2021, 10:16

I love the creativity on this board Cool

By gdx

Enlighted (4814)

gdx's picture

12-08-2021, 10:31

Only unsolder the key that is malfunctioning and open it like that:

Then clean the bottom with alcool or contact cleaner to remove the oxidation.

Use a cotton swab, and a toothpick if the oxidation resists.

I did it for 3 keys of my HX-10.

By Tubateacher

Supporter (5)

Tubateacher's picture

12-08-2021, 10:27

You guys are insanely amazing! LOL!

Think I won't attempt to repair key myself, might be a little ahead of my ability!

@Meits.....genius!!!

Thank you all, have been sitting on a ton of games for years wondering if I'd ever get a HX-10 again and having now found my old one, my dream is getting closer to being realised!

p.s. joystick arrives on monday! Wink

By Pencioner

Scribe (1479)

Pencioner's picture

12-08-2021, 11:04

Briqunullus wrote:

But how to type chr$ without c-key?

LOL LOL LOL
i missed that, i'm sorry LOL