I do not work on these very often, but I have one giving problems.It seems after this one comes out of sleep, it does not warm up enough before it lets you print. The toner can wipe off or it will be stringy. I have replaced the fuser twice over the last year and it still does this. We put a power filter on the line just wondering if it was getting hit and confusing it.Does anyone have an idea or have you seen this?Any help would be great.ThanksCameron