dvr repairing of dahua and hikvision, dahua model dh-dvr2108h, dh-dvr3108h. dh-dvr5108, dh-hcvr4108 and hikvision ds7108hwi-sh, ds7208hghi-sh no display solution, power on but nodisply change display is flash, need same serial number for online after repairing, we will solve all problem of dahua and hikvision dvr with same serial number
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