SOURCE: Blank scren, led stays green for only one second
Explicit enough to see that's this a a repair shop job. That also probably means a replacement- cost of which will not be much more than repair prices. One thing how ever- the power supply[which would appear to be the problem] is this built into the screen [that is does the screen have mains power direct? Or is it powered from an external 'Power Brick' If it is of the Power Brick type - then a new power supply is the answer - get on of the stabilized universal type with a fistful of connectors and a voltage selector switch.
SOURCE: BENQ FP731s Monitor Problem white blank screen
BenQ brand new high-voltage wire circle
BenQ LCD Controls circle / BenQ LCD accessories more high success rate, and easy maintenance, fault lower again!
Name : BenQ LCD
Name : LCD Controls circle
Model : specifications : 1J.26048.011
BenQ LCD accessories four small mouth lights of the high-pressure reverse pressure plate used for high temperature must Taiwan curbs are enameled wire system. With a small noise, power, brightness control in high-efficiency low-loss. Rapid cooling loop can be designed according to customer-specific products.
2 features the use of high-precision inverter line Rao, insulation and can be a long time. 3 to 1. Electricity use light line measurement of high-frequency currents. 2. Backlight voltage output of a sinusoidal waveform. 3. The backlight brightness and the same as the original high-pressure plate. 4. 1-2 4.1 filament output AC exchange through the export of Maintenance and Spec - CN5 link to the. 5 and storage temperature and Temperature temperature ranges : -5 -- 50 ℃ work humidity range : 10% -- 95% RH the backlight should be within the scope of the above, the following conditions can store 40,000 hours. Operating temperature : -10 -- 80 ℃ work Humidity : 20% -- 95 % RH
BenQ LCD maintenance information
1 : BenQ LCD can switch planes normal (no signal light yellow, green signal), Looking carefully at the screen whether there are changes, they generally do not carefully read the screen can not see a change, oh, look at carefully Matata. Change or switch to a normal plane, the main board intact, such a high-pressure situation on board is no work, no lights lit backlight.
2 : disassemble machines, starting with high-pressure plate (box 220V piece of the plate), a screwdriver button open, not lazy. Power board and put the Main Board are removed, this is a good Off Power Plate,
3 : Measurement C5707, FQU11P06 (Some of the machines are used FU9024), whether the damage (breakdown) If the damage (breakdown), he seemed to see the appearance .22/160V capacitance whether deformation, If deformation replace, if not capacitance deformation on regardless.
4 : damage to the replacement of the device, if the fear of electricity burned again, you can Controls circle together too, In order to save costs if you should not start for high-voltage wire circle -- testing, If the damage C5707 meeting on the need to replace the high-voltage wire coils (most of the damage to the C5707 is Controls 72.9% Circle aroused),
5 : measurement of high voltage power supply board whether short circuit, without short-circuiting I would be grateful if insurance (PF801) new ones (General C5707 damage, insurance will certainly damage), If you do not have insurance you connect with fine copper wire, this 3-A insurance. Please stop the PF801 power-measurement, measurement inaccurate.
Understand how maintenance of electronic maintenance steps friends
1 : BenQ LCD can switch planes normal (no signal light yellow, green signal), Looking carefully at the screen whether there are changes, they generally do not carefully read the screen can not see a change, oh, look at carefully Matata. Change or switch to a normal plane, the main board intact, such a high-pressure situation on board is no work, no lights lit backlight.
2 : disassemble machines, starting with high-pressure plate (box 220V piece of the plate), a screwdriver button open, not lazy. Power board and put the Main Board are removed, this is a good power to remove board.
3 : replacement C5707 4 (Q809, Q808, loops, Q815) four high-voltage wire coils (T001, T002, T003, T004). 2 FQU11P06 or FU9024 (Qingdao, Q805). PF801 Insurance (insurance for the three A).
SOURCE: Monitor displays breifly then goes to blank screen
The green power light indicates that the monitor is receiving from the
computer correctly. I suspect it is going into high voltage
shutdown. There is a safety circuit that monitors the high
voltage and shuts the monitor down if it sees anything amiss. So
the monitor comes on and then shuts off. High voltage problems
are generally not worth trying to repair. Another example of a
worthless safety feature. High voltage failures are not
dangerous, and adding the safety circuit just kills the unit when it
may have some life left or worse, sometimes it is the shutdown circuit
itself which fails!
Hope this helps.
SOURCE: Monitor goes blank less than a second after turning on.
the moniter may be having some technical errors maybe the IC's has got corrupt
you need to call the seller of the moniter
SOURCE: Benq FP71G monitor screen displays momentarity on
check your power supply and power cable and check your monitor cable if its not damaged..or try your monitor to another computer..
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