Broken LCD screen?

Hi all. A couple of months ago while using my MacBook Pro (not doing anything particularly intensive) the screen went crazy, filling with horizontal lines (lots of pink and black) though I could kind of see what was being showed on the screen. I tried to restart a few times, however, even when booting the usual gray screen it looked crazy. I left it for ten minutes and then the problem had disappeared! Happy that it wasn't playing up, I left it.
Fast forward to two days ago, I had the same problem. It fixed itself after thirty minutes or so. Yesterday the same problem, however now the screen is just black and I can't see anything behind it. The backlight turns on and I hear the starting chime when I boot, but that is it. It is slightly complicated by the fact I am currently on holiday in the Mediterranean.
The only contributing factor I can think of is that 4 months or so I replaced the optical drive with an SSD. This was relatively straight forward and don't think I did any damage apart from partially tearing the FaceTime camera - that hasn't worked since. Haven't had any other issues.
The MacBook Pro was purchased in early 2011, it is one of the 13" models. I am running OS X 10.0.4 though it seems to be a hardware issue.
I think the laptop is just under warranty still as I had purchased AppleCare, but since I have opened it and installed a third-party device I figure I have voided my warranty. I get to London in a few weeks (where I should be able to open it up) and was hoping to see if MacRumors thinks it can be mended by me (I am somewhat tech-savvy, albeit a bit clumsy with my hands), if Apple is able to repair it cheaply (which I doubt) or if I have to suck it up and buy a new laptop. I have been eyeing a new MacBook Pro with retina for months, though money is tight and was planning on waiting a year or two. If at the very least I hope I can temporarily fix this until the new Skylake processors are introduced.
Apologies for the long post. I can happy to answer any questions, though I'm on holiday and I can't do much with the hardware. I have tried to reset the NVRAM, to no avail.
I am posting this from my iPhone so it was tough to correct the grammar.