My phone was turned off with low battery. When I plugged in the charger, I left it for a while and then tried to turn it on, nothing happened. The red charging light was on.
I left it charging for several hours, but it did not turn on. The full reset (volume + and power button) does not work either. I connected it to my PC: this also gives the red light load but does not allow the boot, but I regularly receive the message on the PC: the device that was connected to the PC does not work correctly and Windows does not recognize it.
Is there something that can be done? I bought this cell phone in 2017 so I do not think it has more guarantee, and since I am a technician, I have already opened it so I would need your technical help at a distance.
I have tested the charging pin and it works fine, the correct voltage reaches even the battery. I have also charged the battery with universal charger, it still does not turn on the phone.
I read that there are test points in MTK equipment to revive them and flash them. But I can not find the KCOLO testpoint in bv8000pro, could you send me a photograph of your location or the schematic diagram please?
Analia from Argentina