From the sound of it, the switching power supply probably broke down. It should be fixable, but only by a certified technician
! CRT monitors are dangerous
I don´t know the situation over there, but maybe you should ask around at your local stores (maybe even TV and radio dealers).
After my secondary monitor has broken down a few times (with different symptoms, I´ve had it fixed once and fixed it myself at other times (only because I know very well what I´m doing)), I´ve finally stopped to use the "power save" function. It does indeed save power, but it stresses CRT monitors considerably to start up from sleep (LCDs are less affected). So basically it´s down to the choice between wasting power and wasting hardware...