One customer gave feedback that the screen of his Launch CRP919X BT is faulty. There are lots of lines on the screen, though the button will respond.
Here X431Shopde tech support answer:
Open the tool and re-connect all wires.
1)Remove screws on the back shell
2)Remove the horn wire and then the back shell
3)Remove foam rubber and tape
4)Re-connect all wires and see if the screen will work normally
After tests, install back CRP919X BT.
Done! Hope this could help!
Whatsapp: https://wa.me/8617782330462
Email: sales@X431Shop
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