sew333 wrote: ↑21 Sep 2020, 02:27
2 weeks ago something tripped 2 small circuit breakers . All electricity lights and sockets went down .Then.......i go to bathroom and saw that one of 3 halogen bulbs no lightning. So one bulb get burned.
It is hard to say what was the culprit, and what sequence of events happened.
-- A bulb might have short circuited, causing the circuit breaker to trip. A burning-out lightbulb sometimes execute a very brief short-circuit behavior that trips a circuit breaker. (Debris inside a burning-out lightbulb can scatter/fall inside the glass sphere and short circuit, creating a bright flash and/or circuit breaker trip when it goes out. Monitor crash or defect occured upon return of power (poor tolerance of power outage).
/or/
-- A circuit got overloaded (computer, monitor, microwave, heater, etc, the whole room's power outlets might be on the same circuit) and tripped. But when you reset the circuit breaker, the cycling of the light bulb caused the lightbulb to burn out. Monitor crash or defect occured upon return of power (poor tolerance of power outage).
/or/
-- Your monitor has a short circuit and was the culprit.
Are you sure your monitor cannot turn on? Sometimes a power outage crashes the electronics in a monitor too (like a computer too), sometimes you have to unplug and replug the monitor. Complete unplug.
Try unplug and replug: Simple monitor crash from undervoltage event
That often solves the problem since the monitor may have some crashed electronics if your outage "browned-back-in" or "flickered-back-in". Imagine undervolting your CPU, same thing -- the monitor electronics may have been temporarily undervolted by a low voltage upon return from power outage. Slow repowering events can be very weird for electronics, creating a crashed-electronics situation or power-button-not-responding event. Until you completely unplug the device/computer/appliance, wait for a minute, and plug it back in.
Exercise your right to warranty: Defective power supply did not tolerate return of power
In either case, it is usually an RMAable defect since nothing else got damaged except your monitor, and power supplies in monitors need to be robust enough to tolerate unplug / power outage events / brief moments of undervoltage. Like a power bar with a switch or an uninterruptible power supply running out of battery power. So sudden loss/return of power is normal use. A sole single device that gets damaged in a simple unplug/outage when everything else isn't, I consider to be the fault of the electronic device because it was weaker tolerance of power outage than everything else in the household. A weak power supply that gets damaged in a simple (non-overvoltage) outage that damaged nothing else, is to me, considered a design defect or simply a defective product -- in that all other units are strong, and you happened to have one with a defect-weakened power supply. This tends to be more common than a sudden short circuit inside a monitor capable of tripping a circuit breaker.
More rare is a short circuit inside a monitor, but that too, is an RMAable defect. If you smell lots of bad burning plasticky smells, then that may be add more evidence of short circuit.
If something else happened (lightning) that damaged everything, or multiple devices stopped working, then sure, it isn't RMAable.