flicker in vhs capture to Panasonic dmr e80

[jbmv]

I recently bought a second hand Panasonic stand alone unit,and I have a strange problem,when capturing vhs to the hard drive or directly to disc a flicker/flaming rainbow appears at the very top of the picture ,certain colors are much more susceptable to this (blue,orange) recording from every other source (Cable,DVD.Laserdisc) works fine only vhs and have tried different vcr's and cables and different inputs on the machine ,still the same results every time ,so i feel it must not be outside interference,has anybody suggestions?
Thanks
JBMV

[handyguy]

Isnt that macrovision copy protection coming on?

[jbmv]

no,it's on tapes recorded off tv over the years