On Wed, 14 Sep 2022, Jonathan Katz via cctalk wrote:
I have a TVI-921C at the museum. I power it on and it
beeps
continuously. One long, solid tone that does not stop until I power it
off. How do I start diagnosing this?
Check the power supply voltages.
Mike Loewen mloewen(a)cpumagic.scol.pa.us
Old Technology
http://q7.neurotica.com/Oldtech/