Electrical
Why doesn't my doorbell work anymore?
What’s likely going on
A dead battery (for a wireless doorbell) or a worn-out button contact (for a wired one) causes most doorbell failures. Wired doorbell transformers can also fail after years of steady use, which is a less obvious cause people often don't think to check.
Is this a DIY job or worth calling someone?
Checking or replacing the battery is a safe, simple first step for a wireless doorbell. A wired doorbell that still doesn't work after a new button is worth having someone check the transformer rather than guessing further.
Not sure, or ready to have someone take care of it?