After this machine electricity directly to boot. DVD machine can work normally. But play after a period of time the image first stationary then gradually disappear, also no display screen. 3Chservice manual download site
 3Chservice manual download site
Press the key no response: if it is electricity after a period of time to boot, the image and display are no display; Boot up again after the experiment when failure occurs immediately without electricity, failure is not disappear; Power off after 10 minutes to boot back to normal work, but the fault appeared again and again. 3Chservice manual download site
 3Chservice manual download site
Boot after a period of time and work for a period of time after the power supply machine will fail. Probably after the electricity. After an overheated components in the circuit doesn't work. The whole machine failure. 3Chservice manual download site
 3Chservice manual download site
 3Chservice manual download site
In overheating fault, the discrete component out the possibility of failure possibility of the integrated circuit. The higher the level of integration, the higher the risk the greater the volume of IC is out of order. So that the machine decoding block IC4001 (ES6082F), because it is not only responsible for decoding and part of the function of the microprocessor, also directly output audio and video and through IC600l control screen display, the function and the corresponding fault; In addition, IC4001 after electricity (including not boot) rises too fast. And this is obviously different from normal machine. 3Chservice manual download site
 3Chservice manual download site
Maintenance methods: 3Chservice manual download site
 3Chservice manual download site
(1) the first human to IC4001 warming can make the machine fault in advance. The machine can work normally when power off. Heating with hot wind yee IC4001 surface for a period of time (30 ℃ temperature control in the following, to prevent the destruction of decoding board and other components), after electrify malfunction appears directly, showed that IC400l warming may indeed cause the failure. 3Chservice manual download site
 3Chservice manual download site
(2) only prove IC4001 overheating can lead to machine malfunction is not enough, there may be other unknown reason lead to the same fault. Such as heating chip on the side of the crystals and after heated resistance capacity elements are also likely to lead to the same fault. Therefore shall also proved from the reverse side to cool IC400l can eliminate the fault. In the malfunctioning of the machine is about to or just cooling IC4001 surface with alcohol (conditional coolant available). The fault is no longer present.

 2    1 2 Next Last