Absolutely. The PVM-2950Q(M), and probably other PVM or BVM sets, do not accept composite video as a sync source. You either need a pure C-Sync source, or a sync stripper to produce same.
Oh, make sure the C-sync BNC plug is in the right socket. It needs to be in the one labelled "H.D. (COMP)" If you leave it unplugged, or plug it into the "V.D" plug, it won't work.
sorry for the bump, but this is the same problem I have, with the same model actually. I got my pvm for $20 at a thrift shop and quickly bought stuff from retro gaming cables without doing all the proper research I guess. So it's either a sync strike or this cable? http://www.retrogamingcables.com/fe...r-sony-pvm-monitors-lm1881-sync-stripper.html
Retro Gaming are kind of dicks about always using Composite on sync and not warning their customers about it. What I did Is modify my cable because I too was having problem with my PVM. I sent them emails and stuff telling them to make cable with Pure sync or at least offering both and informing customers about what is the best choice but to no avail as they continue with their way. That kind of piss me off. Seriously who wants a RGB cable with composite as sync???
Just wanted to say that I own both PVM 2950Q and BVM 20" 800 lines top model and the PVM has a better picture by far. It's true it needs LM1881 as a sync stripper as many said here but I wanted to say.. it has the best image by far on any CRT available. Even with only 600 lines it's the best CRT monitor I've ever seen live. I also use here the scart to jamma adapter made by Tim to bump the VPP on the RGB line so I can have a brighter and stronger image. Always taking care to not overload and it's really beautiful. I honestly believe this is the best you can get on retro consoles.
Because normal TVs with SCART use composite video as sync. Edit: Oops, meant to post this in the FAQ thread...