Acer Iconia Tab B1-710 - problem black screen

abc015

I have a Acer Iconia Tab B1-710. Now problem is that when try power up screen is fully black and i don't hear anything sound if touches touchscreen. I tried push reset button but not work. It is broken lcd screen, battery or motherboard? 

IronFly

if the screen is black without any Acer logo at boot, probably is a bad LCD monitor or dead motherboard.

 

if you connect the AC charger, there is any sign of life?

abc015

No sound when connected to charger and black screen. I opened this tablet and taken off all parts but no anything idea where problem. Battery cable when put back into the motherboard and then come a small blue spark. It make this because when the charger was also attached to the motherboard. This mean maybe that motherboard get a power?

IronFly

sparks are not good when connecting something.

 

i think it needs to be serviced but i think it will a dead motherboard.