On Wednesday, July 17, 2019 at 9:40:00 AM UTC-7, wrote:
On Wednesday, July 17, 2019 at 9:58:01 AM UTC-4, Nick Kennedy wrote:
Hi All
My CAI 303 display has got a couple of intermittently working buttons.
Can I take this apart at home and clean them?
Has anyone done this procedure? How do you do it?
Thanks in advance.

Open up.
Do over a surface that will show parts you take out.
Clean the contacts with a strip of paper.
Make sure buttons don't stick when reassembling.
Not brain surgery.
UH

Also,
Caig "DeoxIt" is an excellent contact cleaner.
https://caig.com/product/deoxit-d5s-6/
Turn the flow to minimum and still use less than you think necessary.
Jim