I have a Mitsubishi monitor, I had a problem with it phoned and they give me a date when they would collect it and drooped another off.
Two phone numbers.
Phone this number first 08701201160.
Repair shop is 01202627102.
What they do is send you another monitor of comparable age, but, if you are not satisfied complain and they will send you another. I ended up with a bran new one.
You will find them ok