Benq LCD Monitors Model FP731 Problems Is No Power
Benq LCD Monitors Model FP731 Problems Is No Power
The BenQ LCD screen typel FP731 setback is no power symptom. If you have read my preceding articles, you would know that I would not pressing use all my trying gear to delay the intact power and inverter stay instead I would use my eyes to examine all the components first before initial to use my digital multimeter to delay on the fuse and other components first.
I saw about 8 filter capacitors that had bulged and leaked on top of its capacitor casing. We have the first inkling and if my assumption is right, only the capacitors that caworn no power symptoms. However in order to be in the secure part we have to delay other components as well.
Looking at the power chief part didn’t expose any burnt or cracked components in the stay. It is not good enough just by looking at the stay, we must delay few of the essential components first in order to reinforce that it is secure to control on the power after the exchangement of the 8 faulty capacitors. The essential components that I referred to was the fuse, power or grinder fet (mosfet), control type power deliver chief winding and inferior diodes. If you have the experienced, you can delay all of the components on stay lacking removing it but of course the smps chief winding you have to use a flyback checker to check it.
After all the essential components checked approve, I would assume that after the exchangement of the defective capacitors, I could pressingly control on the LCD screen lacking relateing a light bulb first. There is no vital to relate the light bulb because the power part components were checked approve beparts the fuse didn’t thump in the first place.
For your information, most of the capacitors worn in the LCD power deliver were from the 105 mark Celsius in order to last longer and position the intensity emit by the power deliver itself. If you exchange with an 85 Celsius capacitor, it would not last long and may come back with capacitor setbacks again.
The Benq FP731 LCD screen setbacks was restored to usual process after the 8 filter capacitors was exchanged. Capacitors breakdown was very everyday in the LCD screen because of it compact shape where the intensity have difficulty to shift out due to the power deliver stay was roofed by an aluminum caring. Sometimes after few hours of process, you could feel the farthest intensity at the aluminum caring and surrounding part. This is a good hearsay to us as an electronic darner because more and more LCD screen mail in for darn because of capacitors faults only.
Jestine Yong is an electronic darner and a essayist, for more lcd check darn tips wish stay his website at http://www.electronicdarnguide.com