Sony HB F1XV

By Valken

Resident (43)

Valken's picture

18-10-2021, 10:22

Hello all.
I have recently purchased a Msx Sony HB F1XV that is almost fully functional.
However, the keyboard shows defect for few keys.
I have made some investigation and found out that the keyboard IC track is damaged (no issue with the key or the plug).
I have tried to rubber some tin over the scratch to maintain contact but was not successfull.

I have read on https://www.msx.org/wiki/Sony_HB-F1XV that it is possible to order a keyboard repair kit.
Has anyone here have those parts?

Additonaly, I am looking for a RGB Din Cable with distinctive connector for each output (BNC).

Thank for your help

Valken

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By Valken

Resident (43)

Valken's picture

18-10-2021, 10:25

Please ignore this request in regards to the keyboard PCB as I just found https://www.msx.org/forum/msx-talk/hardware/hb-f1xd-keyboard...

Greetings

By Grauw

Ascended (10181)

Grauw's picture

18-10-2021, 14:01

Grauw wrote:

After trying out the keys on the keyboard, I found that the F1, F2, F3, CTRL, SHIFT, CAPS and GRAPH keys were not functional, but KANA was (on the same matrix row). This wasn’t mentioned in the listing btw. After opening it up there was a spot on the membrane traces above the space bar that was a bit discoloured, probably some liquid was spilled. The trace for the mentioned keys had a particularly dark spot on it.

I repaired it by scratching off the lacquer from the trace and painting a new connection using a pen with conductive silver ink that I ordered, sealing it off with a coating of nail polish. All keys are working great now!

https://www.msx.org/forum/msx-talk/general-discussion/sony-h...

By Valken

Resident (43)

Valken's picture

18-10-2021, 14:08

Thank a lot for that Grauw.
I will try this procedure.

Greetings

By Grauw

Ascended (10181)

Grauw's picture

18-10-2021, 14:43

If the damage is extensive then I think this approach is not sufficient, Meits for example had such severe damage that he didn’t succeed with this approach, he had trouble using the pen to draw reliable traces over a long length, he was going to attempt to use a different (manually applied) paint next. But for small trace damages like this it worked well for me.