How many gb in ehc tc-30 tapes - JVC EHG TC-30 EHG Extra High Grade VHS-C Video Tape VHS-C Tape

Not with you - can you explain the situation more fully, please ?

http://www.bmwlt.com/forums/k1200lt/165217-electrohydraulic-center-stand-ehcs.html

ELECTROHYDRAULIC CENTER STAND (EHCS)

I don't know anything about it, but I read other discussions that included owners and mechanics damaging the device when servicing it.

This model uses VHS-C (VHS compact) tapes. You can still get them on Amazon.

Maxell Vhs TC 30 HGX Gold Camcorder Videocassette 3pk

If it's a VHS-C format, eBay has some for $25-30.
https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2334524.m570.l1311.R5.TR12.TRC2.A0.H1.TRS0&_nkw=vhs-c+adapter+cassette&_sacat=0&LH_TitleDesc=0&_osacat=0&_odkw=vhs-c+adapter&LH_TitleDesc=0

try a different cable

I don't know anything about the "eats tapes". You can take out your tape fairly easily thought. All you need to do is
unscrew screws on the left and right side of unit
remove the cover
use a flat head screw driver to gently push down on a white lever on the side of the drive mechanism while pushing the eject button

There is a VHS cartridge for a JVC EHG 30 VHSC tape. It's called a Panasonic PV-P1 Adapter, and think you can find one on eBay. I've used one before, and from what I remember, it worked pretty well. The only bad thing about it is that you need an AA battery to operate it. Well, I hoped this helped, if you still need it.

http://www.alphacine.com/

Try pushing the eject button while pusshing the power button. Mine was doing the same and that is how I was able to eject the tape.
Good luck
sam