Thanks bro, i not checked battery before because with no battery connected, phone was not recognized.
Battery is 0v and not charge even with direct input, it's only 0,3A.
I see soldered jtag point so someone tryed jtag before with no success. Customer say other service center say is needed pcb replace but i think is not lg center because jtag solder is not professional
I hope buyng battery i will not loose money