Cscope 1220B

[jroux]

Hello, need help with my old cscope 1220b is ringing all the time.
What could be the problem.

[WM6]

Probably something with coil, loose contacts, broken wire, etc.

[ivconic]

Maybe power supply malfunction!?
Could be too.

[asolone]

the reset button work?

[asolone]

I know very well the circuit of this instrument

[kt315]

is a coil in ok condition? have you checked it on another detector?