2015 Insignia NS-55D421NA16 No Standby-PSU Sparks

[Acesales]

Re: 2015 Insignia NS-55D421NA16 No Standby-PSU Sparks

Pad 1 goes to a >1 ohm resistor below and to the left.
Pad 2 goes to the left side of the resistor under and to the right of pad 3. It measures 5.45K.
Pad 3 goes to a common point between the two resistors under and to the Right of pad 3. Both resistors measure approx. 5.45K.
Pin 4 has a bad trace.
Pin 5 goes back to the 12V supply.
Pin 6, the upper left pad opposite the arrow goes to the 4R7 inductor above it.

[Acesales]

Re: 2015 Insignia NS-55D421NA16 No Standby-PSU Sparks

Pad 2 goes to the left pin of the PWR UPGRADE connector (GND). Pad 2 to the 12V pin, or right hand pin in photo shows a climbing resistance like a capacitor charging.

[Acesales]

Re: 2015 Insignia NS-55D421NA16 No Standby-PSU Sparks

Here is a pic with ID's.

[Acesales]

Re: 2015 Insignia NS-55D421NA16 No Standby-PSU Sparks

A SOT-23-5 5 pin converter makes more sense based on the board pinout. Not sure which one is correct, though. Strike 2 or 3 for my schematic.

[Acesales]

Re: 2015 Insignia NS-55D421NA16 No Standby-PSU Sparks

I drew this schematic based on what I can see on the board as well as continuity testing. I can't figure out what voltage regulator to use. The pinout doesn't make sense to me. Any ideas?

PS- budm, I don't have a good power supply to simulate the standby voltage, unfortunately. All I have is an old Lab-Volt non regulated that I use for tube radio repair.

[Acesales]

Re: 2015 Insignia NS-55D421NA16 No Standby-PSU Sparks

Does anyone know where I can get the correct schematic for this TV?