You have offered no reference to voltages, scan pulses, and etc.
There are several things that can cause your description.
The power supply may be seeing a short, the protection may be cycling,
the power supply itself may have failed, the horiz output stage may
have failed, and or the vertical deflection area has failed. Also, it
is important that the standby supply is functioning properly as well.
If the horiz output transitor is shorted, which is common, then there
will also most likely be failed parts in the power supply as well.
The horiz output trans will sometimes fail, from the flyback being
defective, and or the drives to it have failed going back via the scan
pre-driver stage, or the scan generator circuit itself. There may also
be some components in the horiz output stage in themselves that have
also caused the main failure in the first place.
You would most likely have to take the set to someone who is
experienced on Sony sets. These sets can be a challange for even the
most experienced of techs!
Going by your question, I would suggest taking the set in to a Sony
rep, or someone who knows the Sony sets, for a proper estimate. There
are also many safety issues with working in these sets.
Jerry Greenberg
http://www.zoom-one.com
