Skyworth color TV 29TK9000 (5P30 movement) rework machine, line output transformer burnout model [BSC25-3355-21] double focus. Users do not have this model in their hands, try Skyworth 29HI9000 line T replacement, the original machine foot is basically the same, the difference is only focus on different single focus. It is determined that the replacement of the tube seat can be carried out by double-convergence and single-concentration, and the focus can be slightly fine-tuned after replacing the normal. This machine also has a serious common problem, and the trouble is very annoying! It will change with the change of the image, and there will be a flashing phenomenon, which is easy to misjudge the repair! The normal power supply voltage of this machine is 140V, as long as it is basically locked, it is a data problem! But the adjustment is invalid! [Enter the system method: press the volume--key to 0, press the control screen to enter the factory mode]. Another reason is the pillow tube, the capacitance is caused. After checking IC302 and C326, the latter target is only C306, D300. It is found that C306 has no capacity to replace and everything is normal. C306 this capacitor requires strict authentic! Otherwise invalid will easily lead to misjudgment!
Thyristor module is one of the most commonly used semiconductor devices because of its small size, simple structure and strong function.This device has been widely applied in various kinds of electronic equipment and electronic products, used as a rectifier, inverter, frequency, voltage regulator, contactless control of motor speed, motor excitation, non-contact switch and the power control, etc.
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