Viewsonic VX2880ML 4K monitor, front vontrols won't work, help.

SOURCE: Screen goes blank after a few minutes

hi if your sure that all the power settings of the screen and the comp are fine then it points to 1 reason: the screen is heating up and the automatic circuit shuts it down... try locating it some cooler place or put a vent behind it... see if it does any help if soo set it in a cool place good luck

Posted on Mar 16, 2006

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).

Posted on Dec 27, 2007

SOURCE: viewsonic vp930b-3

Same symptoms with no display and blinking green light. My monitor had been having a distorted image occasionally and a subtle whack on the side would clear it up for a week or so. I replaced both of the 1000uF 16v caps and both 250uF 25v caps on the power supply. All 4 were bulging before. Powered up and all looks good. Thanks!!

Posted on Oct 06, 2008

SOURCE: Dell monitor shows blank screen, green power light stays on

Hello,

You have a monitor with a common problem. After a few years some LCD monitorswill blow a power supply. The problem is caused by parts calledcapacitors overheating in the confined space of he monitor. If you aregood at electronics repair/soldering you can usually fix he problem. Check out a few pictures on my web site www.ccl-la.com/badcaps.htmYou can take the back cover off your monitor and look for the bad parts,replace any that look like the pictues and your monitor should workfine. The capacitors do need to be installed with the correct + and -connections, note the stripe on the old one and insert the new one thesame way. If you don't want to try the repair yourself we offer a repair service for $35 plus shipping. I hope this helps, if so please rate my solution.

Buddy
Corporate Computer
www.ccl-la.com
Over 21 years of computer and printer support/repair

Posted on Jul 03, 2009

SOURCE: 19"ViewSonic LCD Monitor wont work at all !!

If you can see the screen faintly still the backlight is dead. If the inverter of inverter fuse was dead there would be nothing at all on the screen period.

Posted on Jan 02, 2010