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It may not be caused by the change of the reverse capacitance capacity of the color TV,There are sparks and sounds that should be caused by the high-voltage cap ignition,The high-voltage ignition makes the high voltage can not completely enter the phosphor screen,The voltage of the fluorescent screen is not enough,It will cause the screen to be dark or shrink on both sides,It's very simple,Just replace the high-voltage cap on the back of the fluorescent screen,10A few yuan will be done!!
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1. The spark is the high-pressure cap ignition, and the high-pressure cap should be replaced.
2. The image shrinks to the middle, and the black-and-white machine is caused by the change of the capacitor of the boost capacitor.
3. The image shrinks to the middle, and the color motor is caused by the change of the capacitance capacity of the reverse path.
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There is a high-voltage circuit inside the TV, and even if the power is off for a long time, the high voltage can still be maintained, and it is easy to be at risk of electric shock. It is recommended that if you don't understand, you should find a professional repair.
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This is pincushion distortion.
In addition to pincushion distortion, the fault also has the phenomenon of over-width of the line. The pillow calibration circuit of the machine is shown in the attached figure. Try to adjust the pillow calibration trimming potentiometer VR351, but it has no effect at all; Adjust the line amplitude potentiometer VR350, and there is no change in the row width; The positive terminal voltage of the pillow calibrance C356 is only about 4V, and it is suspected that there is a problem with the C356, but the replacement result is invalid, and the maintenance is in trouble for a while.
Inadvertently removed the inductor L401 for inspection, found that the end of its pin has been charred and blackened, the inductance marked with an inductance of 200UH, find an inductor for the circuit (the inductance is slightly larger than L401) and replace it, the pillow distortion really disappeared, the test adjustment pillow calibration potentiometer V351, amplitude potentiometer VR350 also worked, the root of the problem is the inductance L401 damage and caused.
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It's best not to do it yourself, just send it for repair. Avoid the expansion of failures.
You can already see that there is a firelight inside, and there is a problem with the line width, and the fault is easy to expand!!
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There are two adjustment bars on the back of the TV, one up and down, and one left and right.
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Summary. Hello,This situation is generally due to the fact that you accidentally modified the resolution of the TV,The solution is as follows。
Turn on the TV and press the menu button of the remote control to bring up the menu options of the TV.
2. Find the image setting option and press the confirm button to enter.
3. After entering, find the image ratio, select it, press the volume + - to increase or decrease the image ratio, the user can adjust to the best ratio (full screen display) according to the screen display effect, the default image ratio is 100%.
4. If the full screen display is still not possible after adjusting the ratio, it may be caused by the hardware failure of the TV, and it is recommended to contact the after-sales service of the TV to detect and repair the TV.
The TV screen is zoomed in the upper left corner.
Hello,This situation is generally due to the chain field vertical because you accidentally modified the resolution of the TV,The solution is as follows: turn on the TV,Press the menu key of the remote control,Call up the menu options of the TV。 2. Find the image setting option and press the confirm button to enter. 3. After entering, find the image ratio, select it, press the volume + - to increase or decrease the image ratio, the user can adjust to the best ratio (full screen display) according to the screen display effect, the default image ratio is 100%.
4、If the full screen display is still not possible after adjusting the ratio,It may be caused by the hardware failure of the TV spine machine,It is recommended to contact the after-sales service of the TV to detect and repair the TV。
TV footage. In the first step, use the remote control to pop up the control menu options on your TV. The second step is to find the item in the image setting and confirm it.
The third step is to find the image ratio, and swim through the addition and subtraction of the volume button to adjust the picture until the screen is full, and the ratio becomes 100%! Fourth, if the above operation, the TV still cannot return to normal, it may be caused by the TV record, it is recommended to contact the official after the sale.
Which is the menu?
Middle. Or if you don't know, find a young man to do it.
I'm just a young man....
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The screen of the TV is slightly tilted to the right, can anyone know how to adjust it?
The screen of the TV is slightly tilted to the right, can anyone know how to adjust it? Hello dear! 1、If the screen image of Skyworth TV is biased to the right or to the left,You can enter the bus to adjust the row phase of the TV to recover。
2、If the screen image of Skyworth TV is biased upwards or downwards,You can enter the bus to adjust the field position or field phase of the TV to recover。 3、Due to the different movements of Skyworth Fengjing TV into the bus method is different,And the parameters in the bus can not be modified at will,Otherwise, it may lead to the TV not being able to start normally。 Therefore, for non-professional users, it is recommended to directly contact the after-sales service of the TV sliding base blocker to arrange professional and technical personnel to come to the door to troubleshoot and solve the problem for the user.
Hope it helps!
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