psu ac240es-01 from dell Optiplex

[MegaZAC]

I'm thinking about replacement of TNY280 with the next version. It looks noticeably upgraded, while there is just one part on the schema has changed. Considering this change, would it fit instead of the 280?

And instead of the original 20A60CT I will use MBR3045

[MegaZAC]

Hello everyone, I'm back

Finally, I am finishing this PSU, I have all components and nearly done. I have replaced dead resistor R46, TNY280PG, but the rest of the components are still out of the board. I'm checking the result of my replacement and not sure that everything is fine. I had to remove the big coil between them all, and now having 0 Ohm between its legs with number 1 in this image

so measure resistance arround it between identical color dots:

Red
Yellow
Green
Blue1
Blue2
Blue3
Green-blue1
Purple

Is it OK?

The green dots also have 1 Ohm between them. Is it OK?

I'm also not sure if all 4 legs of one side of TNY280PG should have 0 Ohm with ground. I know that they all should be shorted between themselves, and work as source in MOSFET.

[MegaZAC]

This picture, to be clear.