On Fri, 10 Oct 2008 09:31:34 +0200 John Bolten
wrote in Message id: :

Hi!

When I switched my CRT TV on, it made a cracking sound (not very loud,
like someone dropped a full PET bottle on the floor in the next room)
and since then, a constant beep-like sound goes off ca. every half
second while there is no other sign of activity of the TV (no picture,
no sound, no CRT buzzing...).

What could be the reason for this behaviour?

Shorted HOT would be my guess. The "beeping" you hear is probably the
power supply cycling and shutting down.