Hi to all.
this tv uses beko boards.
problem- ther backlight for a few sec and then off and then on and off.....come and go.
power supply is XRV910 IPOS 150B REV3.2.
12v ok no bulging capi and I also change the 12v capi 4ofthem .
big smothe capi ok 400v.
sg3525 this ic drives the fets that feed the hv transfomers.
pin 15 vcc change from 12v to 0v this cousing the backlight on and off.
the vcc fade from a pnp tr and the base off this feedsfrom ic D78F9222.
not shure if its with software or just to buy a new one and place it.
did someone has the same problem?am I missing something alse?no schematic to this p.s.
also apw pin 3.2v and bkon pin 3.3 and stady .
even when plug to the ccfl is out the 12v vcc to sg3525 is changing .igess the ccfl is ok also 5v is ok.
thanks willyam1
this tv uses beko boards.
problem- ther backlight for a few sec and then off and then on and off.....come and go.
power supply is XRV910 IPOS 150B REV3.2.
12v ok no bulging capi and I also change the 12v capi 4ofthem .
big smothe capi ok 400v.
sg3525 this ic drives the fets that feed the hv transfomers.
pin 15 vcc change from 12v to 0v this cousing the backlight on and off.
the vcc fade from a pnp tr and the base off this feedsfrom ic D78F9222.
not shure if its with software or just to buy a new one and place it.
did someone has the same problem?am I missing something alse?no schematic to this p.s.
also apw pin 3.2v and bkon pin 3.3 and stady .
even when plug to the ccfl is out the 12v vcc to sg3525 is changing .igess the ccfl is ok also 5v is ok.
thanks willyam1
