Insignia ns50d510na19 tp.ms3553.pc906 power schematic

[oddbondboris]

While diagnosing one of these boards with no backlight voltage i came across a Chinese schematic fragment with a Haier logo in the top corner
it nearly perfectly matches this tv board down to the component designators
thought i'd post it here as there is little info out there on these all in one boards and obviously no schematics from insignia

[neilc6]

Re: Insignia ns50d510na19 tp.ms3553.pc906 power schematic

If you have no backlight, you likely have bad backlights especially with that model. The protection circuit shuts down the backlights when the sensed voltage is not within expected range. If you put your multimeter probe on the backlight connector, you should see it spike when the TV is first turned on before protection kicks in.

[oddbondboris]

Re: Insignia ns50d510na19 tp.ms3553.pc906 power schematic

no spike, i already replaced the backlights because i've seen so many of these with bad backlights before and forgot to check
these backlights light if provided voltage but thanks, don't want someone to see this thread and think that they have a bad board when it's just the much more common leds