Gateway vx1100 monitor, unit wont start.

No insult intended but... My idea is you should not be servicing electronics. By describing what you tried as a repair, if the monitor had turned on it would have caused a fire and/or electrical shock hazard. The stickers on the back that state "For service by authorized personnell" or something similar refers to someone who will try to do some basic troubleshooting before replacing a fuse and who will NEVER use a fuse rated higher than required by the manufacturer. The fuse is the first line of defense against a fire and almost never opens unless there is an overload or short-circuit later on in the device.

muncey: Generally, whan a fuse blows in a monitor, it means that there is a short on the primary side of the switching power supply. The power supply is designed so that it can detect an over-voltage or over-current (short) on the secondary side (load side) and automatically shut down. I would check the bridge rectifier (or 4 individual rectifier diodes) and the switching FET (on the heat sink) for shorts. Once in a while, a capacitor will short, but it is somewhat rare. Hope this helps.... John