Dell monitor fizzing noise
Dell Model 1907FBT Monitor started fizzing and then blinking then off.
Sounds like a failing capacitor in the power supply.
If you are familiar with soldering circuit boards look for a bulging component -- or in extreme cases leakage -- replacement is relatively simple and cheap.
If you are not familiar with soldering circuit boards, be aware that the circuit in a monitor can store painful voltages even disconnected from the wall. Leave it to a technician.