820-2997 thunderbolt display

[raainxx]

Hi,
i try to repair a thunderbolt display, it work fine in display but don't charge the mac, the led is off.
I try to change the cable (the cable in the display seems good) but always no power on magsafe cable.
I would like to know where is the cable for magsafe power in the display, on the power supply board or logic board? or both?
Do you have any experience on this display?
thanks

 

[raainxx]

I try a new power board, now the magsafe work on the macbook.
Do you know where can i find the schema of the power board?
thanks

 

[dukefawks]

No schematics available. Just hack in an old charger brick inside the display or something.