Where can i obtain a VHC to VHS cartridge converter for a JVC GR-C7 1986 video camera. VHC-C.

SOURCE: Condensation, operation paused, JVC Video Camera model GR-D70AS

If the camera becomes damp or cold and brought into a warm atmosphere damp forms in the mechanism which would cause the tape to stick and become damaged or fouled.

leave the camera to warm up for a few hours and the fault should clear.

If not the most common reason is the dew sensor has failed and needs replacing

SOURCE: What cable do I need to hook up Video camera to pc?

Try Firewire Cable ....but check that your Camcorder as well as the PC has the port ..... If not then check S-Video Cable

SOURCE: record directly from jvc model GR-- D370U Digital Video Camera to my pc

Sorry, but it's not possible to record directly to a PC. Windows movie maker will only record from a tape. Please use a quality cable like Belkin, I have had issues with the cheaper firewire cords.
Good luck

SOURCE: GR-D250U manuel

You can get it here:
http://camera.manualsonline.com/ex/thread/view/idThread/124172

Please note that you will have to register with them for free to download the manual.

Hope that helped!
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SOURCE: JVC digital video camera GR-D350AA

http://resources.jvc.com/Resources/00/00/90/LYT1500-001B.pdf