2004 Acura MDX Rear AC not working

front a/c working well but not the rear

i am having time removing the transistor, is there trick to that ?

Mine had the same problem. I change the transistor and it worked . Put everything back together and next day again NOT WORKING. This time I haven't check the fuses yet. I didn't clean the screen filter either. I'll check those fuses and clean that screen and see if it works. Resistor was brand new, I don't think is the same problem. I think this time is something else.