O1 WFD Music Workstation Problem

[Chris2261]

Not sure I'm in right place to ask but I have a problem I was wondering if anyone could help:
I brought the workstation out of the attic after maybe 6-8 years of not playing.
Firstly it was saying low internal battery which I replaced and is fine.
The problem is the Value up button doesn't work in SEQ, Combi, Prog etc however the Value down button does work. Value slider working fine also.
Any ideas how it can be fixed?

Thank you.

[Riva Lima]

Not sure I'm in right place to ask but I have a problem I was wondering if anyone could help:
I brought the workstation out of the attic after maybe 6-8 years of not playing.
Firstly it was saying low internal battery which I replaced and is fine.
The problem is the Value up button doesn't work in SEQ, Combi, Prog etc however the Value down button does work. Value slider working fine also.
Any ideas how it can be fixed?

Thank you.

Replace the switches contact, or cleaner spray on it... but is better replace all them