Hello,
I have a Powerline TP Link model TL-PA4020P that at a certain point completely stopped working, It is completely dead.
I tried to open it and after a visual inspection under the microscope there are no signs of damaged components.

since I am an electronics technician is it possible to have the diagrams of this device?
regards
Fabio

@papadeltasierra  I’ve been troubleshooting a dead TL-PA4020P (no LEDs, no signal). After several tests, I have identified the root cause of the failure.

I desoldered the switching transformer (Part No: 3510500114 PL 1452) to isolate the circuit. Here is the technical verdict:

Primary Winding: Measuring 0.0 Ohms (dead short) between the two primary pins.

Secondary/Auxiliary: Pins are clean and readings are within expected ranges.

Diagnosis: Internal short-circuit in the primary windings due to insulation breakdown (likely caused by 24/7 heat exposure over the years).

Since this is a custom transformer, I’m looking for a replacement or a compatible part number. Has anyone successfully sourced this transformer or found a compatible flyback alternative for this specific board?

Any help or lead on where to find the part would be greatly appreciated!