Help with arming apm2.6

set my working apm on to new frame now cant arm without usb connected arms fine when usb is connected no reports or errors but when i try arm with just the battery connected it goes though the motions arms and immediately disarms props dont even get to turn a 1/4 rotation has any one got any ideas please iam pulling teeth here lost all the hair lol

@alcartraz,
Can you provide either tlogs or data flash logs to help troubleshoot your issue?
Regards,
TCIII GM

i will try but how do i get the log file