Emerson PL-P42W-10A plasma

[Hornnumb2]

It will just click on and off twice then nothing. Most voltage reading I only get when it’s clicking then gone except standby.
CN801
PS On 3.2
STBY 5.28
GND 0
D15v 15.4
GND 0
GND 0
D5.3 5.26
D5.3. 5.26
GND 0
D15v 15.4
D15v 15.4

Again only while clicking on do I get correct voltages.

CN802
D5.3v. 5.3
D5.3v. 5.3
GND 0
GND 0
Ps on 3.2
Vs on 3.2

CN803
Not sure if this says V5 or VS
V5 17-18 range
V5 17-18 range
GND 0
GND 0
D15v 15

CN804
VA 22
GND 0
D15 15
GND 0
Vs or V5 around 18
Vs or V5 around 18

I have replaced power board, the small green board and swap eprom on connection board. I have also have unplugged each board and powered on but to no avail.

[R_J]

That will be Vs, there is a sticker on the panel with the correct voltage, It looks like the Vs should be 205Vdc, and the Va 55Vdc
I suspect you have a problem on either the Y-sus or Z-sus boards

[Hornnumb2]

So should I be able to unplug one or the other and it should stay on?

[R_J]

Yes you can disconnect the y & z boards, and monitor the voltage on the Vs of the power supply to see if it comes up to 205v.