With time and technology, lcd tv has become a very common kind of household appliances in our lives. Lcd tv is a relatively high-tech household electricity commodity, which also means that, once quality problems arise, repairing it is a difficult matter. Quick malfunctions in home-based lcd tv usually have no access to the system, no sound on it, or image problems, etc. So how are we supposed to fix this? How do you charge for the maintenance? Let me introduce you briefly
I. Common failures of lcd television
No sound, no image
The television was turned on with no sound and no image power lights. This failure should be due, first and foremost, to problems with the power panels and, again, possibly due to the irregularity of the cpu component of the television. If, in the course of its use, there is a problem with no sound or image on the television, and when the television light flashes, and the television flashes white light at the moment when it is on, the failure of the television should be due to damage to the backlight drive of the television, but it cannot be excluded that it was caused by a problem with the backlight tube。
Turn it on
The television lights are off. The failure of this lcd television should be distinguished by the fact that the cpu bus on the tv is not working properly or by the ic exposure of lcd tv. In the case of lcd television, which is related to the opening of the system but which has no light or sound after a period of time, it is generally due to the failure of the reverse circuit of the television screen component, in addition to the ageing of the television pv or the damage to the television high voltage plate protection。
Show problems
There is a problem with the screen-filled panels of televisions, or with the regular latency of screens, when they are generally television-screened, when the lcd television repair is performed, they can replace a pair of buffers, or they can measure which ic lines are broken and replace them。
Ii. Link tv screen problems
Blackscreen
Black screens tend to be more frequent, including image interference, complaints, etc. When the black screen phenomenon occurs, the main board program is checked for loss, and if it is, it can be solved by simply rewriting it. What then needs to be checked is whether the chip is damaged and, if damaged, the chip needs to be replaced and rewritten。
Screen
The screen refers to images that are also visible and soundable on television screens, but that are incomplete and that suddenly appear, for example, in colour blocks, making it impossible to watch television normally. This situation should normally be followed by a review of the normality of the main panel clock output, the failure of the main panel three colour signals from the output to the main chip segment, the short circuits from the main panel signal output to the link to the screen。
Iii. Lcd tv maintenance fees
General maintenance costs of 100+, depending on the size of the television, are not charged for lcd. If you change the whole panel, it's about $300-500. The vendor should not charge door fees for maintenance during the post-sale service card period, and if the goods have passed the post-sale service card period, it is reasonable for the vendor to charge home fees for maintenance *. As there is currently no state-imposed regulation of household electricity maintenance, enterprises are more likely to comply with self-imposed standards. When accepting household electricity maintenance*, consumers are asked about the items and costs of maintenance services, check price lists or catalogues, and ask for transferred spare parts and detailed maintenance service notes in order to defend their legitimate interests。
That's what we're talking about about about how lcd tv works
