So i had this problem, and long story short, i had to replace a capacitor in the monitor (same capacity ofcourse). After doing that, instead of black color, i see small, red stripes. I resoldered the capacitor, and still the same problem. I pluged the monitor to a laptop, and get the same result, so its not my gpu's fault. Also re-done the ends of ribbon wire(s), and still the same result. Any idea what could be wrong?