wrote in message
oups.com...
Ditto, given the fact that everything else is working and the tubes are
simply going into blanking off and on. Odds are very high that the
picture tubes are worn out and the AKB circuit can no longer
compensate.

To start on this repair the AKB circuit will need a proper check of the
drive and return pulse as the tubes warm up to confirm.

For $200 they will take a huge loss, three picture tubes on a Sony XBR
~900 parts cost.

$200 for a fix that lasts a few months...

Leonard