The symptom you are describing is usually attributed to a bad flyback
in your model of monitor. The drive transistor should be changed along
with it when this is the case.


Jerry G.
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BigTom wrote:
Mitac L1450PD monitor

i get HV for about half a second then it shuts down.
heater glows orange 6v at crt neck.
G1 and G2 drop to 0v after shutdown.
HOT ok.
removed HOT and placed a 240v 40w globe across collector and gnd.
lamp lights up.
i measured B+ at one of the caps on the secondary side of the chopper
and get 152v.
is this a good place for B+ and is this voltage too high?