Unsoldered working diode has 0.622V forward drop.
Just to specify more, the upper middle diode is fine, the left bottom one is gone.
About the connection:
upper middle diode's cathode is connected to the pin 1 of F1823IST.
I accidentally connected battery to uncovered contact pad somwhere in the right bottom part of PCB for a second.
I'm not sure if something else is damaged but visually only that left bottom diode was fried. The controller reacts when connected to the battery (blue diod blinks) but probably not sending trigger signal correctly because garrage door isn't openning.