Sony DVW-790WS DigiBeta Issue

[ARC Tech-109]

Having an issue with my 790 widescreen, during playback I'm getting a checkerboard pattern of bad pixels despite having a strong RF envelope from the tape and the service menu reflecting no bit errors during playback. Tapes recorded on this camera play perfectly in my A500 editor so it appears to be a play only issue and everything else is good. Do we have any Digital Betacam experts, guru's or warlocks in the videokarma shadows?