Samtron Monitor 56v 15''. I have a samtron 56v 15'' monitor and using it since last four years.

Question

I have a samtron 56v 15'' monitor and using it since last four years. But, from last few days, it contain problem. Problem is that monitor does not display me red color. After some time of computer starting, sometimes red color comes back and again gone up. This things happens often(red color comes for shot time and then goes away). If you have any solution to this problem then please suggest me..Solution would be appreciated..Thanks in Advance...................