Question about Philips Business 201B40 (White) 21 in.CRT Conventional Monitor
SOURCE: monitor power problem
It sounds like an internal issue, more likely the LOPT components are overheating, possibily due to dust collection causing temporary shorts, or an arcing capacitor. The randomness is due to weather conditions, high humidity more likely to monitor wil shut down, the dryer the weather the moisture in the dust would have evaporated, resulting in nothing happening, and a working monitor. I suggest trying this first:- Unplug the monitor from the outlet, and the computer, open the case, but REMEMBER! the monitor can still pack a punch even when it's unplugged from the outlet, (once the case is open, it is completely safe if you accidently brush against a metal part, but under no circumstances (unless you know what you're doing) remove the rubber cap that's either on the top, bottom, or sides of the back of the screen, doing so can result in a massive jolt of up to 20,000 volts),use a can of compressed air to blow out the dust, making sure you clean right up to the control buttons on the front, screw the case back in place, then try the monitor, if it's still the same, and unless you are a qualified electronics engineer and would like to repair the monitor yourself, I suggest you take it to a repair shop.
Posted on Jun 18, 2007
This is the way how to examine
what's wrong with your LCD monitors. After you turned it on and the screen stopped working, you have to check that if you can see the image on the screen or
not by shining a flashlight into the screen, not directly but find the best
angle to the screen and take a look very closely. If you can see the icons or
any image, there will be a minor problem. This is because of the lamps inside
screen. Some of them were broken and it is very easy to replace. If you cannot
see anything on the screen, there'll be some problems with inverter board. If you
have soldering tool and want to fix it by yourself, check the caps first. It
may cause this problem. Some caps might show leaking or burn spot on the board
because of too high temp. If you don't have soldering tool, you better go get a
technician to do so.
Hope this help!! If anything I can help you with, feel free to let me know.
Posted on Mar 26, 2008
This is a fault solution which can be checked and corrected by you assuming that there is no component failure. There is a high possibility that the components over a period of heating and cooling, tend to bring on a problem of dry soldering. So my advice is to check the set for some loose joints that have played on to give you these erratic shut downs or poor performance. The best way to check for loose connections is to tap lightly when the set is powered on, if there is change while tapping then it seems that there are DRY solder joints. Remove main plug, the covers - with caution of high voltage, check for dry joints, and use a good soldering iron to solder all suspected points. Sometimes the fault occurs when the set warms up; if so you can simulate the heat using a hair dryer on the suspected areas, try with the power supply, distribution, Processor controller, driver controllers on the A/V related sections. Also the use a FREEZE-IT spray can simulate the components to cool and show up the fault. It can also be related to WEAK ELECTROLYTIC capacitors as the value can reduce in time. Based on the above method you must be able to locate the area of fault and solder the sections.
Posted on Dec 10, 2011
Tips for a great answer:
Nov 06, 2013 | ViewSonic VG730M LCD Monitor
Nov 14, 2011 | Belinea Maxdata 1925 S1W LCD Monitor
Nov 02, 2011 | Samsung B2030 LCD Monitor
Feb 02, 2011 | Acer X193W LCD Monitor
Apr 09, 2010 | Samsung T220HD LCD Monitor
Dec 31, 2009 | ViewSonic VG2230WM LCD Monitor
Dec 07, 2009 | Princeton Digital VL173 Monitor
Sep 24, 2009 | BenQ G2000WD 20 inch Monitor
May 29, 2009 | Samsung SyncMaster 244T 24" LCD Monitor
Jul 30, 2007 | HP L1940T 19" LCD Monitor
22 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: