Hi, I am the proud owner of a Macintosh Plus 1MB. I purchased it off of eBay for a few bucks. When I received it, I plugged it in, turn it on, heard the chime, and allowed it to come to the screen with the floppy disc. (need startup device) Because I have no mouse or keyboard, I decided to cover the Plus for two weeks until my ordered KB&M came in. After I had the accessories, I assembled the Plus, flipped the power switch, but it did almost nothing. The only thing it does is make a repetitive, endless popping noise from the inside. It clicks 2-4 times a second. There is no chime or screen image. Any help would be greatly appreciated.