08/26/2026
I love buttons!
Electronic buttons, that is. 😄
I've talked about these little push buttons before, but this DVD player gives me a chance to actually show why they eventually fail.
This player came in because some of the buttons worked while others didn't. After testing, the decision was made to replace all 19 buttons.
So what's actually inside one of these little buttons?
They consist of four main parts:
• The button
• The contacts
• The contact strip
• The click pad
The button is the part you interact with. The click pad gives you that satisfying *click* when you press it.
But underneath is where the important work happens.
The contact strip moves down and bridges the two electrical contacts, completing the circuit and telling the electronics that you've pressed the button.
Over years of use, those contact surfaces can become dirty, worn, oxidized, or "glazed." They may no longer make a reliable electrical connection even though the button still feels perfectly normal and gives you that familiar click.
That's why you can sometimes press a failing button harder and suddenly it works.
The mechanical part is working. The electrical part isn't.
In the last photo, I've labelled the four components. The black circle with the three red arrows points toward the two electrical contacts inside the button.
Those contacts should be a clean, bright metallic colour. Instead, these have become dark and contaminated.
Exactly what caused the contamination in this particular player? It's difficult to say. Age, environmental contamination, smoke, moisture, electrical arcing, or simply years of use could all potentially contribute.
Whatever the cause, all 19 buttons are being replaced and this DVD player will be back to reliably responding to its controls again.
It's another good example of why something that still **clicks** isn't necessarily working properly.
Sometimes the failure is hiding inside one of the smallest and simplest components in the entire device.
And that's what makes troubleshooting so interesting. 🔧
If you have an electronic device, appliance, or other item that isn't responding properly, reach out. It might be something much simpler than you think.