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Old 10th Oct 2015, 10:10 pm   #17
vhs doctor
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Join Date: Oct 2011
Location: Athens, Greece.
Posts: 132
Default Re: Help with National NV-780EM VHS

You can download the service manual from here

http://freeservicemanuals.info/en/se...sonic/NV780EM/

These type of panasonic/national mechanism (D1) when the VCR operates the mechanism proceed a <<selftest>> the capstan motor rotate the suplly reel table and the loading motor make a small movement (rotation). if the self test find a failure the VCR rotate for a few seconds the capstan or the loading motor (it depends from the failure) and then turn OFF.
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