Introduction: in recent years, as science and technology have developed and people's standards of living have improved, plasma television has become one of the household's necessary household equipment, favoured by many friends. But do you know how to check and repair the plasma, the tv, when it's down? The article is mainly about the maintenance of plasma televisions。
Fault and maintenance methods for plasma television
Turn it on
If the signal is red, that's fine. Just press the standby button. If it is not bright at all, it is the power supply of the panels, if shown as blue, the power and crystals of the u8 and the bus, if there is a problem, if there is a problem, if there is a problem, if there is a problem, if there is a problem, if there is a problem, if there is a problem, if there is a problem of reconnecting, if there is a problem, if there is a problem, if there is a problem with flash, if there is a problem with upgrade or replacement, if there is a problem with the lvds drive, if there is a problem with the replacement. In this way, a step could be taken to check out the problems and resolve them。
Image problem
If you are able to operate properly, there is no image or image-like phenomenon, you first check the normality of the other channel, you change the lvds circuit or the pdp module if you have a problem, you have a problem with the lvds module, you have a problem with which the image is entered, you have a problem with the object in the input channel, you have a problem with the replacement, you have a problem with the television signal, you can check the high school frequency circuit and u8, or you can check the signal。
Sound issues
The sound problem is one of the most common problems of televisions, with no sound or small acoustics, possibly with loudspeakers or headphones, or with headphones, lm833, with horns changing horns, or r314 with 30v power supply, if there are no problems, see panel 30v power circuits, most of the problems with silent circuits, then review the static circuits or check the acoustic stimulation signal output。
Pneumatic failure approximate plate repair judgement
Use the malfunction flash table in the maintenance manual to see how the light flashes in general。
Under 1: it is generally a board a problem and there is an error in voltage or data exchange, judged by cutting off all line lines on board a, to see if it is open and to see if it is open。
Under 2: the p-d plate 15v problem, in the first case, there is no p-board 15v output, and in the second case, there is no d-board 15v short circuit or 15v cut off, without access to electricity, judged by a separate p-board maintenance test (which has been taught all the test methods), a normal p-board problem, a normal d-board problem。
6 & 7: quick determination of problems between general sc board and power is to cut the line sc20 off, see if it turns on, turn on, open, sc board, do not turn on, p plate tested separately, board is normal, sc su sd is normal, check if sud sd ic drive output is short-circuit, not short-circuit, sc board is available and sc board can be repaired separately。
Under 8: disconnect ss33 directly, see if it's on, turn it on, ss questions, unserviceable p-board issues, normal ss issues, abnormal p-board issues, p-board issues。
Ten: open listening relays battery breakup time, suction immediately, p-board detection circuits or short circuits, p-board problems, then separately, confirmed, typically 15v or stb5v short circuits or no output。
Profile of plasma television
Plasma television is an electrical device that can perform television functions. But what's the difference between it and a regular tv? Turns out, the plasma tv added some special gases between its two glass screens, and once the tv was connected to the power, plus some voltage, the voltage would light up the fluorescent between the two glass screens, thus enabling the television to function. But, in contrast to the modern development of lcd tv, two of the two types of tv that used to co-occupy the paint market have become a unique feature of lcd tv, and plasma tv has gradually withdrawn from the colour market, but it still has some merit. We take the sealin plasma television, for example, as a big brand, its quality and performance are guaranteed. However, once any branded television is in use, there will be some minor malfunctions, which will be followed by some common method of failure and maintenance。
Does this article give you further insight into plasma television maintenance and testing methods?
