Iris plasma television, our home television, is estimated to be so, having encountered problems in its use, small makeup has encountered a lot, not brand television, but we know that, whatever product, some problems may arise over time, but how to deal with them is crucial. Next, xiaobian will teach you some of the most common maintenance methods for long rainbow plasma television, and i hope to help you solve some of the problems。
The method of repairing frequent failures of long rainbow plasma television:
No questions of commencement。
If not activated, first check the status of the power signal. If the light is red, no problem. Press the standby button to start. If it's not bright at all, it's the power supply of the panels. If blue, check u8 power supply, crystal and bus. If so, please replace the crystal maintenance bus. If there is no problem, check the lvds connection. If there is a problem, please connect from the top. If there's no problem, check flash. If so, please upgrade or replace. If there is no problem, please check the lvds drive and replace it if there is a problem。
Two-time start-up three-nil, with the sound of relay adsorption。
When the lids were opened, it was found that the pfc complete flow d102 had broken, indicating that the pfc circuit of the power had been damaged. Q101, q102. D102, q103, q104 were found to have been damaged. The 15 foot-to-ground resistance value of u101 (ucc 3818n) was then tested to be small, and the 14 foot-to-ground obstruction value was low after the break. When the above elements are replaced, the electrical tester is in good condition. In order to verify the complete repair of the machine, the resolution aging the machine. The ageing of the machine is not a problem overnight and proves that it has been fully addressed。
3. There are instances of automatic shutdowns, sometimes after which they can be opened, sometimes not。
When the problem arose, a test of the voltage at each point of the power source found that 5vsb had no output and no short circuits. Determines that the problem constitutes a circuit in 5vsb. This must be due to the poor functioning of the component. At the time of the problem, only 256v tested 8 feet of u501, no problem was found in the peripheral component. No problems with re-testing machines after the direct replacement of u501 (1203 p100). In order to further validate the problem, the replacement u501 will be installed on other power panels and the problem will continue to arise to justify the correct judgement。
4. There was a sound and no image at the secondary launch。
This indicates that the low-voltage part of the power is functioning normally, the post-test source output voltage is normal, the y. Z plate is safe and the vy. Vsc voltage is normal on board y. This means that the board is working properly, looking closely at the screen and finding the light. Based on experience, this phenomenon is due to poor software on the logical board and eliminates the problem after changing the logic。
Well, here's a description of the common failure maintenance methods for long-oneron plasma television. I don't know how much you know. If you don't know, you can also refer to other information articles。
