on the blink
(UK, Australia, informal) functioning erratically, malfunctioning; not working or not working well. Usually refers to a mechanical or electrical device.
My toaster is on the blink, making either charcoal or cold bread.
Ruff's communication satellite is on the blink, in desperate need of repair. Source: Internet
Sadly, it’s often the first thing to go when our health is on the blink. Source: Internet