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i recently bought an imac g3 model m5521 it worked fine when i recieved it i shut it off and placed it on my desk it worked fine there until i powered it off i pushed the power button and i here a pop and the imac didnt power on and now whenever i try to power iy on i hear a soft pop from the speakers does anyone know the problem or know a solution i am by no means a mac expert or user so please explain clearly thank to everyone who submits help
If there was a popping noise, then you are probably going to have to take it apart and look around inside for a blown capacitor or fuse, or some sign of electrical arcing. It could just be the power supply that has gone bad. You could try wiggling the power cord near the computer and listen for any popping noises and try to turn it on afterward if you didn’t hear anything. At any rate, you are going to need to test the power coming out of the power supply. You will need to use a multimeter. If you are averse to working on electrical circuits, then you should probably take it to a repair shop; though, it may cost more for a pro to fix than it is worth. The link below is for an IMac G3 M4984, but it may at least give some insight on how to disassemble your computer if you are inclined to do so. iMac G3 Model M4984 Power Supply Replacement
Hi, I have 6 or 7 of these in various models/colors and the one thing the G3 was very bad at was starting when the PRAM battery went dead. You can usually get it running again by resetting the PRAM chip on boot. Hold down the following keys at or before you hear the chime (you do get a chime? or just a pop from speakers?) OPTION - COMMAND (APPLE) - P - R Keep them down until you hear chime 2 times then let them go. If no chime, but just a pop from speaker, then power supply would be next stop. If the pop is coming from inside, then you may have a more serious logic board issue. Mike
