Yeah I'm sure its caps or resistors or similar simple points of failure..
Again, mind telling me how you contacted them i.e. if by phone what # ?
I hacked up a Mitsu DB15 to VGA connection (VGA extension cut in half into a breadboard with breadboarding wires wrapped/taped to the vga wires that are too thin to breadboard; a DB15 IDC ribbon cable crimp connector I had handy onto a stripped down floppy cable, stripped and also connected to breadboard via the breadboarding wires etc) and it looks like crap (this is
ghetto) but blue is the correct brightness! YAY! Red still dead, which means the red cutout is further in.
Downside: It only accepts 640x480, 1024x768 from my x360 (whereas any rez works on BNC, including 1280x720 (v/h squeeze adjustments nonsufficient to make it proper 16:9 tho) and 1280x1024 ('5:4' but 4:3 displayed, native rez of this thing supposedly..)
Granted, it didn't even work at first until I was almost ready to give up and bumped the wires and I heard the sync relays click ! So maybe 1280x1024 will work if I didn't have such a ghetto wire job. Now that I know it partially works I may be about to solder a proper job together... but maybe not tonight.
Off hand, does the min manual specify if the resolutions supported on the DB15 are different from the BNC connectors (i.e., maybe its not my ghetto wiring but in fact the failure to even scan that high on DB15) ?
I have a friend who sorta-kinda knows how to fix some issues w/ monitors but if I had a service manual and could overcome my fear of death by discharge (I have a healthy fear of electrocution and am a bit paranoid about trying to discharge and hope its fully discharged..

) I'm sure I can fix anything thats reasonably fixable..