i dont balme you..

Do you have a back up monitor while yours is being worked on???

Hvae you adjusted anyting on the monitor to see if it will fix it..
Oh and do you keep a cell phone by your monitor?
Cause if you do, keep a cell phone sometimes when it goes off, or if you are talking on it It can interfear with a monitor

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take time to heal thyself before trying to help others, or you will never get better