I can't offer personal experience with this outfit, but you might contact them. I get the impression Sony isn't into making monitors anymore, and those of us that have them may all eventually face choosing replacements. At least the common VCB-MHD1 and VCB-62MH models have been discontinued. I've seen them on E-Bay, used, but don't know that I'd trust that option. Call or email to see what this dealer proffers as options, and keep us in the loop.
http://www.rvcams.com/merchant2/merchant.mvc?Screen=SFNT&Store_Code=RBCARVSBut I'm not sure I saw anything there that could hold a candle features-wise to my VCB-MHD1. The other ports you see on the monitor back are likely for additional camera or Aladdin inputs, although I think other devices may feed into the Aladdin main video control first and then to the monitor through the one cable. I have 2 side-cameras installed by BCS in addition to the rear one. I'm no expert, but I don't think all monitors can handle numerous inputs if needed.
So though I agree with Gerald in principle, I have to respectfully offer my view that if there isn't anything better out there, or at least as good, I for one would entertain finding a good TV repair shop. Having recently done a few electronic circuit repairs myself, I likely would research and consult regarding the problem as I've done in the past, and see if I couldn't fix it myself. It's usually just a relatively inexpensive circuit board component or a solder point that has micro-cracked (cracks in solder that are visible only by festidious inspection with a quality magnifying glass) from repeated heating and cooling. Forums and videos related to the website Element14 have been a godsend for me.
But that's just my 2 cents, and whether it's a venture you feel like tackling is up to you. If you've ever successfully worked with soldering circuit board components, I'd go for it for sure. If not, you would have to put time and effort into educating yourself first. I've found that investment quite worthwhile so far, especially given the electronic age we have to live in. Be aware not all circuit boards are repairable, and if it's a part that's not easily replaceable like say the screen itself... you're gonna still be up the creek. But at least you will have tried.
-Joel