Hi again,
My Beo 3 has had this intermittent fault for around 8 months now.
Initially my local B&O technician said it could be anywhere in "the electronic circuits" and so he and the dealer recommended replacing the complete chassis.In the meantime the set started working again for around 2 months then failed. However on the second visit, the engineer said he thought the problem wasn't the electronics at all but that the problem lay in a build up of corrosion within the Tube itself, something he said he'd come across once before on an Avant, which apparently shares the same model of tube. After 4 attempts involving gently tapping the exposed end of the tube ( to dislodge the build up) and reconnecting everything, the TV sprang back into life!
Sadly, today its gone into safety/shut down mode again.(standby light goes from red to green,a brief crackle and then nothing,the speakers attached, then power down, although the TV green light remains on.)
I wondered if anyone out there has come across anything similar or might have any ideas?
Many thanks.