My A/C went out suddenly

[Christophe Salvain]

Hi listers.

My 2003 Venture A/C went out suddenly. It was charged and worded fine. No compressor whinning or any bad issue before.
I stopped for 2 hours and when I came back no A/C, when I push the button the clutch doesnt engaged.
Checked :
- the a/c fuse is OK.
- the a/c relay OK (I swap it with the honk one).
But :
- I short the a/c relay with a jump wire : the A/C clutch engaged but a weird smell appeared after 15 sec. :-/.
Midas checked the charge there was ony 700g instead 1300g of R-134a. Even full charged nothing has changed.

Any advice is welcome.

Thx.