Does anyone have experience with the Sony EVS9000E? This is a very elaborate Hi8 edit deck. The deck is completely different to the EVS1000, EVSC3 etc.
Original fault: A split in the supply spool teeth. I've seen this before and replaced the supply spool. This does involve removing the back tension band, I carefully marked its position and refitted in the same position exactly.
The machine worked but would occasionally damage a tape in play or F-Fwd. The tape could be seen to ride up over the top of the pinch roller.
At great expense I replaced the pinch roller. This made the situation better, but still sometimes the tape will ride over the top of the pinch roller in Fast Forward. It can take the tape right off the pinch roller and head exit guide, and it then sits in an illegal position bypassing both of these. Ejecting from this condition would of course wreck the tape.
I have noticed when in Fast-forward that the tape sometimes moves in a slightly less than smooth fashion, and it may be this which is allowing the tape to get too high on the guides and then go of the top.
In case I had set the back tension somehow too high, I slackened this off by the tiniest fraction of a mm, but the problem persists.
If anyone is familiar with this mechanism, please contact me on snipped-for-privacy@bigfoot.com
Many thanks for any help.
Colin