29-inch Hisense CRT activated successfully - android - Phones Developers

Shunluo Inductance Power Inductor SWPA Series First Class Agent

To repair a Hisense CRTTF2919H one, the fault is a black screen with sound, asking the customer there is no blur before, so the initial judgment is not caused by the tide, suspected ABL circuit, negotiated with the customer about the price range (no more than brown black brown) and then pulled back to the store In the maintenance, start voltage measurement, the main voltage 128V is normal, there is a sound description line has started, see the filament is bright, the test three gun voltage is basically 145V or so, in the doubts the tube seat changed useless, the fault remains, the maintenance is interrupted .
So on the Internet to check the forum, check the information, there is a similar fault is to see the acceleration there is no voltage, so the joy of a power up, the fault is found as the acceleration pole voltage 0V, the tail plate off the measurement has three or four hundred volts, check the data The results obtained are as follows: 1. Is the capacitor at the accelerating pole broken through the short circuit? 2. Is the tube socket leaking due to moisture? 3. Does the picture tube accelerate the pole? After the first two results are excluded, the picture tube is measured, and it is found that the acceleration pole and the ground resistance are zero, and the fault is judged to be broken by the picture tube. The data is said to be filled with 250V/10uf capacitor, the negative pole is grounded, and the positive touch is accelerated. Extreme electric shock can be, but I don't know how to charge the capacitor, so I called the master and said that it is similar to the electric shock method. I can't operate it myself. The TV is on hold and the Internet is checked.
The luck is very good. It was a short time since the city came to the master (previously TCL after-sales, after years of vision loss due to age, some power is not enough, so turn to be the boss, open a shop to sell TV, including assembly machines and LCD), he The guiding method is: insert the new tube seat on the tube, ground the ground, and accelerate the pole to connect the meter. The key point is to short the filament foot (otherwise it is easy to break the filament), then turn on the machine and hear the high voltage sound. Turn off the second, insert the test pen into the high-pressure cap, hear the high-pressure sound, see the new tube seat has a momentary red light, test the machine, everything is normal (no good can be more than a few electric shocks), the picture tube repair success! ! !
The younger brother graduated from college in 12 years. After a few trips, he followed the big sister (that is, the master, he started the repair, and later the seller has been using it for 20 years). After studying appliance repair and after-sales, he stayed there for more than two years and learned a lot. Knowledge, feels very applicable, because it is mainly the seller's electricity, so it is a bit like Wanjinyou, what will be repaired, small to rice cooker induction cooker, large to ice wash LCD, and even water and electricity type of various water heaters, basically sell our own store After selling their own, they can't find a manufacturer. If they are not busy, they will explore it themselves. The key to opening a store in a township is service. Our after-sales service is indeed in place; such a wide range of after-sales maintenance, so that there is no professional repair of television proficiency. Like this picture tube is bad, before the phone, directly call the customer to say that the old trade is, because the focus of our seller's electricity is to sell, this 29-inch flat listener said that it has not been repaired in 9 years, it is a pity to scrap At the same time, I also want to hone my skills. Young people must be self-motivated, learn more, ask more questions, and train more.
After starting the division at the beginning of this year, I started selling electricity in another town. It is better to stay away from the master and not affect the harmony. This year's business is sluggish, so the maintenance is done by myself. I cultivate my own reputation while honing my skills. I can repair it. If I can't repair it, I will ask the master and the Internet to check the forum. There are so many professional masters to back up and repair. I am quite emboldened. I usually go to the forums when I have nothing to do. I look at the maintenance experience of the masters. When I am in a bad mood, I will look at the entertainment section. I feel that so many of my peers are there, and suddenly I am very open. There are still many things to learn. The road to life is still very long, you must learn to enjoy.
The significance of publishing this article early in the morning is to let the teachers and teachers guide me the correctness of the ideas of these maintenance methods: Second, I also want to give you some reference to the young repairers like me: the usual maintenance problems When you go to the forum, check the information, listen to the guidance of the older generations, after the repair, you can give the ideas to the beginners for reference. It is also a contribution to the forum, and the hard work of the masters. When paying, scholars can hand in a satisfactory answer, and it is also a very fulfilling thing. Backward feeding, I hope that the forum will be better and better, and one more care in life is also excellent.