picture on my Toshiba 62HM195 dlp tv is flickering

I have owned my Toshiba 62HM195 dlp tv for about 5 years now.  It is our main tv so we have miliage on it.  Last night the picture started flickering, it flickers on every input.  I just replaced the bulb 3 weeks ago.  Does anyone have any advice on what the potential problem could be? could it be a bad bulb? or worse something with the engine, and if so where and how much would this cost? If anyone has any idea please shoot them my way, thanks in advance!