Macbook Air A2681-(820-02536-A)- intermittent Keyboard and TP

Hi
got A2681 macbook air with keyboard and trackpad issue. track & keyboard are intermittent. When device goes in sleep mode for a long time, KBD/TP stop working. But both start working if i shutdown and restart system. i have tried a new trackpad and cable aslo but same problem. device and motherboard look immaculate.

any clue please or should i restore the device?
 
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