Insignia roku tv solid blue light, but won't turn on, no picture, no sound, and no sign of backlight

SOURCE: Insignia NS-32LCD Backlight or Inverter bad???

If you've done the flash light test, it could be the inverter board became defective but it could also be that the power supply does not provide the +24VDC to the back light inverter board.
If you could do the +24VDC test using a voltmeter then we can say for sure that the back light inverter board is defective.
Let me know if you need further assistance.

SOURCE: Hitachi Plasma TV model P50H401

I think you have problems with the digital main PWB.

If the power PWB failed, turn off and change the pilot ligth to red.

SOURCE: why does insignia ns-bthdp have a solid blue light?

I had this problem but the red light was on constantly with no response to anything I did. I plugged this into my power adapter and pressed the + and - buttongs at the same time and it reset and started working properly.

SOURCE: No picture, no sound, does light the insignia sign. Why?

In about 90% of the time the power supply is defective if the TV fails to power ON.
I repair these power supplies, if you need further assistance write to [email protected]

SOURCE: Insignia NS-32LCD will not turn on.

Heat the bridge rectifier with a blow dryer and see it turn right on.