hi to all,
following on from earlier post ref:no boosted pcf voltage
i managed to get a LD7591T pcf boost ic
i now have 385v boosted volts.
the psu produces 12v ok ,
(and bear in mind the 5v and 3,3v supplies are produced by the main board not as shown on the psu board markings.)
now, the tv has no sby led lit ,no backlight voltages
my thaughts were that ths processor could be faulty,but i wanted to completely eliminate the psu first
i checked all the supplies on the main board 1,5v,3,3v,5v, they are all ok,
the psu voltages:
dim 0v ,
on/off 0v ,
ps-on 3v
i fed 3.3v from main board to:
dim,
on/off
and ps-on
but still no backlight voltage
any ideas as to why psu wont give out b/l supply volts?
am i correctly trying to run psu ,or am i missing something?
following on from earlier post ref:no boosted pcf voltage
i managed to get a LD7591T pcf boost ic
i now have 385v boosted volts.
the psu produces 12v ok ,
(and bear in mind the 5v and 3,3v supplies are produced by the main board not as shown on the psu board markings.)
now, the tv has no sby led lit ,no backlight voltages
my thaughts were that ths processor could be faulty,but i wanted to completely eliminate the psu first
i checked all the supplies on the main board 1,5v,3,3v,5v, they are all ok,
the psu voltages:
dim 0v ,
on/off 0v ,
ps-on 3v
i fed 3.3v from main board to:
dim,
on/off
and ps-on
but still no backlight voltage
any ideas as to why psu wont give out b/l supply volts?
am i correctly trying to run psu ,or am i missing something?
Comment