In our everyday lives, we need to repair the equipment if it is damaged or damaged. In this way, the life of sony television will be significantly reduced. And, after the partial damage of the sony tv, it's a problem that deserves our attention because it's malfunctioning and electrical resistance is increasing, and if we don't notice it and continue to use it, it's more wasteful than usual. So these problems can all be solved through our initial learning about sony television maintenance, and today's mini-editor recommends the maintenance of sony television。
I'm sorry
I. Sony tv screen
1. Measure the normality of the output of the main panel clock。
2. Check whether the main plate signal rgb is entered into the main chip segment line (with or without welding, short circuits, capacitating, faulty resistance)。
3. Checks whether the main panel signal output has any welding, short circuits (ic feet, detachments and seating, double-column plugs) to the part of the connector circuit that is exported to the screen, paying particular attention to flattened plugs。
4. Replace screen `or general drive plates, as necessary。
Ii. White screen of sony tv
The white screen phenomenon indicates that the backlight is working, and the main panel is working, so it's on the power switch to see if the light is responding, if the light can change colour, indicating that the main panel is working properly:
1. Checks whether the connection line from the main plate signal output to the screen has been compromised (which can replace the connection line or screen)。
2. Checks the normality of the voltage at the work points on the main plate, in particular the electric voltage on the screen。
3. Check lines with oscilloscopes field and clock signals (from input to output)。
Replace it with a generic plate test for writing procedures。
If the indicator light is not responding or is not lighted, it indicates that the main panel is not working properly:
1. Check the voltage of the main plate at the work point, with regard to the voltage of the eprom (approximately 4. 8v), the compound voltage (high or low level, depending on the type of machine), the cpu voltage. If there is a short-circuit power supply, careful identification of short-circuit locations may result in the possibility of a short-circuited pcb plate copper。
Find out if cpu feet are in good contact with the main panel。
3. Checks whether the main plate chip and cpu are working and can be used as a oscillator to measure whether the crystallization is vibrating。
Replace or recalculate cpus as necessary。
Replace it with a generic plate test for writing procedures。
Iii. Sony tv color bias:
1. Check the main plate signal rgb from input to the main chip segment (with or without welding, short circuits, faulty electrical resistance) 2. Enter the plant mode for white-balanced regulation and be able to remove normal colours。
3. Replace or recalculate mmus as necessary。
4. A rewiring test `replaced with a generic panel test to write the program。
Iv. Sony tv black screen:
Image jamming, hinting is not optimal, hyperfrequency, image dissatisfaction screens, no signal wires, black screens, etc.:
1. In some cases, these failures were caused by the loss of the process and the rewrite process could be resolved。
The mt68f63l/lg drive chip, once red-hot, is the most easily lost program, and the mcu is used by the samsung `aoc ' qinghua side, etc., which has a relatively high rate of damage and can be recovered by replacing the new chip with a new one。
You can also replace a generic drive, so you can keep an eye on the screen's type of interface, and you can split it. It is clear that the ttl `lvds `rsds interface, etc., is the best way to find information about the liquid crystal screen, so that it can be matched with a general drive panel, the driver screen is selected, the programmator is used to write the program, and the electric voltage is pumped! The electrical voltage of the screen can be checked from the screen information。
After reading the above articles, did you find that the original damage to the sony television was caused by minor problems? Moreover, we can spend our maintenance through our own ministry of labour without having to be charged extra by outsiders. In addition, it is worth noting that we have to take care of every detail in the correct maintenance methods and maintenance of the sony television, otherwise the wrong maintenance would have been more likely to cause damage to the sony television, so we must take note of these aspects, while the editor wishes you all a perfect repair of the sony television in your home。
