LVW-5002 SVHS in-out becomes VHS-out when in standby


I have a cable decoder connected to LVW-5002 through SVHS Scart and the 5002 connected to my TV (also SVHS). When the 5002 is on the picture is ok, but when I turn it off the picture goes black and white (presumably to plain VHS-mode). If I connect the decoder directly to my TV-set it shows that the signal is really SVHS. Has any one had similar behavior? This should work, right?