Why does my Haier all in one automatically stand by when it turns on, why does it have a black scree

Auto-standby is not the same as shutting down, you mean auto-standby and then waking up, right?

The reason for the operating system, mine also had such a problem, and it was good after reinstalling the system, but I didn't figure out what the specific reason was.

There may be several reasons for the black screen of your TV:

First, it may be caused by the abnormal power circuit, which is manifested as the button does not respond when pressing the panel, and the indicator light does not light up. One possibility is that there is a problem with the input stage of the power circuit; First check whether the 12V voltage is normal, then check the 5V voltage, if there is no 5V voltage or the 5V voltage becomes very low, there is a problem with the input stage of the power supply circuit. This kind of failure is very common, generally because the fuse is burned or the voltage regulator chip fails, and the relevant parts can be replaced.

Second, if the circuit source is normal, then there may be a problem with the circuit driving the backlight. If there is a problem with the circuit driving the backlight, connect the display to the host to check it on and close to the screen to observe carefully, the common faults of the high-voltage board are the fuse of the high-voltage board itself burned out and there is no 12V** and switch chip failure, etc., replace the relevant components.

Third, there is no problem with the above two aspects, then it may be that the circuit of the switch part of the control high-voltage board on the AD board is faulty. Fourth, there is also the backlight of the screen is broken or other special circumstances. This answer applies to any Haier TV.

Answer: Hello, for reference only, I hope to help,First check whether the power indicator of Haier TV is on,If it is not lit, it may be because of a problem with the power connection of the TV,Sudden power failure and black screen。 For example, if there is a power outage at home, a loose power plug, and a faulty power cord, etc., you can check the problems one by one and deal with them accordingly.

secondly,The power indicator of Haier TV is on,Check the standby button of the remote control,Whether the TV enters standby state,So the black screen is displayed。 At this time, the user only needs to press the standby button of the remote control again to wake up the TV and resume the normal screen display.

If after the above two methods are checked,Haier TV still has a black screen,It is likely to be caused by hardware failure。 For example, power module failure, short circuit or open circuit of switching circuit, high-voltage board failure, LCD screen or screen cable failure, motherboard chip or other component failure, etc., need to contact Haier's after-sales service to overhaul the TV to solve.

The problem doesn't seem to be big.,It's not a big problem when it's turned on.,There's a Haier maintenance point.,I'm in Wuqing District, Tianjin.。

First of all, check whether the components in the power input circuit are normal, such as: power supply fuse, varistor, and anti-interference circuit components.

Wait. If the above checks are normal, then measure whether the voltage of each group at the output end of the main switching power supply circuit is positive.

Often. If the above measurement is normal, it means that the switching power supply circuit is not faulty, otherwise it is the problem of the switching power supply circuit.

Title. Even if the above measurements are normal, the power-on test machine is still not good, at this time, measure whether the power supply voltage of the motherboard circuit is positive.

Often. If the above measurement motherboard circuit power supply is normal, then then measure whether the voltage of all DC-DC voltage conversion circuit chips on the motherboard is normal, and if there is any abnormality, check the components around the abnormal pins of the chip.

Hello pro 1, washing machine panel failure first look at the washing machine plug and power supply to see if there is a loose phenomenon, sometimes the power supply will not power will cause the panel to fail; If there is a power problem, you can find a professional maintenance master to replace the power supply. 2. Take down the panel of the washing machine to see if there is any problem in the panel. The washing machine panel is generally buckled on top and can be removed with a little force.

After the brother slammed down the panel, you can see the structure inside, see if the power switch is broken, the power supply is the source of the washing machine power-on, and if the switch is broken, the washing machine panel will fail; If there is a problem with the panel, you can only repair it or replace it with a new motherboard. 3. Another reason is that some soldering points in the panel are loose, and the current washing machines are soldered with tin, and some have been used for a long time, and the tin is oxidized, which will lead to poor contact and failure of the washing machine panel; If the solder joint is loose, you can also find a professional repairer to repair the manuscript chain.

It could be due to a dead TV signal. It is possible that the screen has deteriorated. It may also be caused by poor screen heat dissipation. Secondly, it may be due to poor line contact.

1、First of all, check whether the connection line of the TV is in good contact,If it is loose, you need to re-balance the plug。 Check to see if the TV screen is showing signs of aging. If there is aging, the screen needs to be replaced in time.

Check to see if the TV's heat vent is blocked. Try not to place some plastic sheeting or TV cloth cover at the heat vent on the TV.

2. Check the voltmeter to see if the voltage of the TV is black due to the low voltage. If the voltage is too low, a voltage regulator will need to be added. Try not to use one power outlet for other high-power appliances when placing your TV.

Do not place the TV and humidifier together to prevent moisture from getting into the TV screen.

3. When wiping the TV screen daily, try not to use some cleaning agents with chemical corrosive agents. Don't slap the TV screen too hard, either. Avoid long** TV. Keep the TV dry and ventilated to avoid moisture.

4. The screen of the TV is very fragile to avoid impact and vibration. Kai Sleepy needs to use a soft cloth and a small amount of water to wipe the TV screen every day. Try not to wipe with the TV on when wiping, and wait for the TV screen to dry before turning on the TV.