Although there is no technical content in this case, I always feel that I have a chat with my peers and my mind is comfortable. I never imagined that a wonderful case is happening in my hands. Please see: Yesterday a guest sent a 40" "DYNEX", the model is: Dy-L40-10A, as shown in Figure <1>. No response after power-on, that is, open the back cover check, strangely found no power board: yes "Three in one" board machine? The answer is no. Then, this machine is "repaired" by others, but I am picking up "second-hand" goods! Figure <2>. At this time, I am forced to wait and see The structure of the motherboard, and the surprise discovery - fortunately, the main board of each row has a label, as shown in Figure <3>. Of course, without these signs, at the level of my own, there is no way to start, because these marks are matched Board operation provides important technical and theoretical data and guarantee of success. Adaptation of the power board must be theoretically considered: First, the working conditions required by the motherboard must be met; Second, the size of the machine cavity must be considered. Point is the premise of success, otherwise it will end in failure. If you want to meet the working conditions required by the motherboard, it seems that it is not an easy task. As a result, looking for it, looking for a power board with only 5v and 12v, and the motherboard Still need a 14v, what should I do? Heart Ling, I found a 15V power adapter plus a 12v relay for control work (relay working voltage 12v is controlled by the power board) as shown in Figure 4. After careful modification, preliminary molding and test machine OK, as shown in Figure < Finally, reorganize the wiring to complete the finalizing operation, as shown in Figure <6>. And the power-on test is completed, as shown in Figure <7~9>, see the picture.
The advantage of entertainment tablet lies in having a powerful chip and excellent hardware. If you want to play various online videos on the tablet and run various software smoothly, the performance of the hardware is an absolute prerequisite. In addition, a high-speed and stable WIFI module is also required, which must be compatible with multiple 802.11 B/G/N protocols at the same time, so that the webpage can be loaded instantly when the webpage is opened, and the online video can be played smoothly. So hardware is the premise and foundation, without good performance everything else is empty talk.
In addition to having a good CPU as a prerequisite, it is equally important to carry a professional video player. A professional video player must perform equally well both online and offline.
Entertainment Tablet,High capacity battery,WIFI
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