"Wayne Tiffany" wrote in message
. com...

wrote in message
...
if u are equipt with voltohmmilliameter(vom) check first the presence of
B+ on the collector of ur HOT.if it is normal Bet 100-135 v and assuming
your PS works fine ,proceed to check the presence of hor. driving
voltage on the Base of the driver transistor, using the lowest ac range
of the tester but do not forget to insert the positive probe to the
output terminal of the vom (Im talking of a analog test er , usually it
has 3 terminals ) so that only the signal will be measured .because in
the output terminal of the tester there is a coupling capacitor that
blocks the dc potentials.connect the black probe to ground.locate the
cold ground and not line ground of the PSupp. if u measured a driving
voltage, atleast .05 or .09V put the probe this time at the collector
of the driver , notice the driving voltage is much stronger .it will
deflect the meter over its full scale.replace ur Hor output transistor,
thats culprit also the flyback must be check . good luck

What we have been chasing is that the B+ is not there, and there appears
to be no signal out of the micro. The why not is the current mystery.
Thanks for the thoughts.

WT


Sony's part number is 8-759-805-37. Any Sony distributor can get it; Andrews
Electronics number is 800-289-0300.


Mark Z.