iMac display turns black, it's getting worse.
Hello, i have an iMac 27'' i7 2.8 Late 2009.
I have the problem that my always turns black after a few seconds. I can start the system and most of the time log in but then it's over. I can get it to work again using the sleep/wake up button but only for a few seconds. When the display turns black, the system itself is still fully running and i can use it over my network with another iMac (remote thing). The problems started out of nowhere yesterday. Yesterday i could fix it by putting the brightness one tick lower than max., after I did that i could use the whole day (browsing,video game everything worked).
Now this morning it doesn't even work using lowest brightness.
Oh and it's completely black, I can't see anything using a flash light.
I can't really afford a new one or the fancy apple repair prices , so any help would be greatly appreciated!