Ask Hisense for help LED32K01 the screen will go off as soon as it lights up

Possible reasons why the Hisense LED32K01 screen will go off as soon as it lights up:

1. The power supply of the TV is faulty.

Solution: Let a professional master disassemble the machine to detect and replace the power supply.

2. The phenomenon of virtual soldering occurs in the TV circuit.

Solution: First of all, find out the position of the circuit virtual soldering, and after finding the position of the virtual soldering of the TV, re-soldering the virtual soldering place.

3. The TV has a long service life, and the aging and deterioration of electronic components or too much dust in the machine will overheat the machine and cause the components to burn.

Solution: Replace the TV with a new one, and also prevent the aging TV from radiating.

4. The picture tube of the TV is damp or aging.

Solution: Disassemble the machine for detection, and then replace the corresponding picture tube.

5. The screen driver circuit inside the TV has a fault caused by virtual welding.

6. The switch circuit of the AD board in the TV is burned out.

Solution:You need to let a professional master disassemble the machine for inspection and maintenance,If the TV is still under warranty,Send it to the TV brand repair shop to warrant。

Thanks for the reply! PWM SW has a friend who repaired the same model to the same fault. He can't change the board either. Finally give up. It should be a problem with the LED strip light.

My LED42K11PG is also,The fault phenomenon is the same,The chip is the same,Flashed the logo and it went black,12V,18V is also gone,There are 12,18 before flashing and I urgently ask for a high finger to point one or two。

The connectors at both ends of the light strip are loose and can be removed and connected, or the diode of the light strip is broken, and he is connected in series.

Talk nonsense. Why haven't I seen a 32-inch LED screen is a light bar problem.

Summary. The reasons for the general LED32K311 gray screen are as follows:1

Circuit board damage: It may be that the circuit of the motherboard, power board, and signal board is damaged, resulting in the instability of the circuit of the whole board and the gray screen. 2.Poor monitor contact:

If the display of LED32K311 is not in good contact, there will also be a gray screen; 3.Damage to the display circuit board: The diode, triode, capacitor or resistor on the display circuit board is damaged, and the gray screen will also occur; 4.

LED32K311 TV tube is damaged: If the LED32K311 TV tube is damaged, there will also be a gray screen; 5.Driver circuit damage:

Generally, due to poor programs and drive circuits, gray screens will also occur. The above reasons may cause a gray screen. Workaround:

1.Replace the host board, power board, and signal board; 2.inspect and replace displays; 3.

Inspect and replace diodes, transistors, capacitors, or resistors on the display circuit board; 4.Replace the TV tube of LED32K311; 5.Replace or check the driver chip and related programs to ensure that the circuit works properly.

Hello dear, your question I have received typing needs time, please be patient, Hisense led32k311 gray screen.

The reasons for the general LED32K311 gray screen are as follows:1Damaged circuit board:

It may be that the circuit of the host Douzen training board, power board, and signal board is damaged, resulting in the instability of the circuit of the whole board and the gray screen; 2.Poor display contact: If the display of LED32K311 is not in good contact, there will also be a gray screen; 3.

Damage to the display circuit board: The diode, triode, capacitor or resistor on the display circuit board is damaged, and the gray screen will also occur; 4.LED32K311 TV tube damaged:

If the LED32K311 TV tube is damaged, there will also be a gray screen; 5.Damage to the drive circuit: Generally due to bad programs and drive circuits, gray screen will also occur.

The above reasons may cause a gray screen. Workaround:1

Replace the host board, power board, and signal board; 2.inspect and replace displays; 3.Inspect and replace diodes, transistors, capacitors, or resistors on the display circuit board; 4.

Replace the electro-pneumatic striker tube of the LED32K311; 5.Replace or check the driver chip and related programs to ensure that the circuit works properly.

Honey, it's a TV, isn't it, and if so, that's the above question.

Hello dear, according to your description, the following is carried out:In general,Hisense led32K311 gray screen causes are as follows:1

Damage to the internal components of the TV: The internal components of the TV may be damaged due to overheating, moisture, unstable voltage, etc., resulting in a gray screen. 2.

Damage to the external components of the TV: The external components of the TV may be damaged due to poor contact, improper wiring, etc., resulting in a gray screen. 3.

TV software corruption: The TV software may be corrupted due to virus infection, system damage, etc., resulting in a gray screen. 4.

The power supply of the TV is damaged: The power supply of the TV can be removed from the stuffiness, which will be damaged due to unstable voltage, power supply damage, etc., resulting in gray screen. If there is a situation of spring bend gray screen,It is recommended to check the internal and external components of the TV、Software and power supply,If you find a problem,You can try to replace the components or reinstall the software,If it still can't be solved,It is recommended to call the manufacturer's customer service**,Repair by professionals。

Dear, hello, according to your problem to make the following, there are three aspects worth mentioning, first: power board problem, the power supply high reading board with immovable load causes the backlight board to be unable to drive, resulting in a black screen, because the backlight needs an AC voltage of about 1000V, but the power supply itself is an inverter process, so, if the power is not enough, even if the backlight board is good, it will also cause the failure of the black screen. Second:

The problem of the backlight board, the backlight board needs to invert the DC 12 or 24V voltage sent by the power board into an AC driving voltage of about 1000V, if the backlight board has a problem, the screen will also be black. Third: The problem of the screen burning itself, the backlight inside the screen is driven by several sets of TTFT lamps, if one of the groups or one of the lamps is broken or welded, it will also cause a black screen.

Dear,Hello,I'm glad to answer for you Hisenseled32K21Boot sound gray screen is The first possible reason is that there is a problem with the field scanning circuit of the TV, resulting in the sound of the TV gray screen,This reason,We need to contact the relevant staff to repair and replace,But don't disassemble the TV maintenance alone,We are easy to cause the internal circuit of the TV to be disordered because of carelessness,So it is the best way to contact the relevant personnel in time to come to repair。 What to do if there is sound on the gray screen of the TVThe second possible reason is that the treadmill of the TV causes the sound of the gray screen of the TV,At this time, we only need to replace the high-frequency head to resume normal use,If we replace the high-frequency head and it has not returned to normal,Then we must send it for inspection as soon as possible,A comprehensive inspection of the TV。 What to do if there is sound on the TV gray screenThe third possible reason is that the unstable line connection leads to the **signal not entering the TV,Our TV needs to accept the signal to send information,In order to display the image and sound on the TV,If the connection is unstable, it is easy to cause the phenomenon of sound on the TV gray screen,So in the process of using,We must check the stability of the line connection between our TV and the **line Zaolu。

If it is normal, then measure whether the voltage of all DC-DC voltage conversion circuit chips on the logic board is normal, and if it is normal, then this fault is likely to be a local fault caused by the abnormality of the main control chip of the logic board circuit.

Hisense led32K21 boot sound gray screen pro! Hello, I'm glad to answer for you. Here's how to fix it:

1. If the power indicator of the TV is off, it may be that there is a problem with the power connection of the TV, resulting in a sudden power failure without an image, such as a power outage at home, a loose power plug, a power cord failure, etc., you can check the problem one by one to find out the problem and deal with it accordingly; 2. If the power indicator of the TV is on, it may be that the standby button of the remote control has been pressed by mistake, so that the TV has entered the standby state, so there is no image displayed, at this time, you only need to press the standby button of the remote control again, you can wake up the TV and restore the normal screen display; 3. If there is still no image on the TV after the above methods are checked, it may be caused by hardware failure, such as power module failure, short circuit or open circuit of switch grip limb backup circuit, high-voltage board failure, LCD screen or screen cable failure, motherboard chip or other component failure, etc., you need to contact the after-sales service of the TV to overhaul the TV to solve it. I hope mine can help you! Do you have any other questions?

1. If the machine fails to say that the screen does not light up when it flashes, and there is no accompanying sound at this time, you can check the following aspects.

Question: First of all, check the rectifier filter electricity.

Road. Check the power factor correction electric.

Road. Check it, the secondary switching power supply is electric.

Road, check it, turn on standby control electricity.

If the above checks are normal, then focus on checking the circuit components of the motherboard.

2. If the screen of the machine flashes and does not light up, when the accompanying sound is normal, you can check the following aspects: 1. First, measure whether the voltage of each group at the output end of the main switching power supply circuit is normal.

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

Title. At this time, in the measurement of the backlight drive control circuit chip, whether the voltage of each pin to the ground is normal, if there is any abnormality, check the components around the abnormal feet of the chip.

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1.The black screen of the mobile phone is one of the faults that are often encountered in the maintenance of mobile phones, and the black screen can be divided into two types: one is the black screen in use, and the other is the black screen in standby. Here are some basic causes and solutions that cause black screens.

2.Most of the black screens in use are placed by yourself.

This is rarely the case caused by third-party software that comes with the machine. It can also be subdivided into two kinds: one is that there is a problem with the software itself, the software itself is unstable, or it does not match the mobile phone system, etc., this is easy to solve, uninstall.

Just load; The second is software and software.

This solution is a little more troublesome, and it requires a software installation and uninstallation experiment.

The next question is with that software. If you find it, uninstall it, and the problem will basically be solved.

3.The screen is black in standby, let's talk about it first.

Standby principle, straight board machines because most of them have a power-saving circuit design: the mobile phone will not detect the key trigger signal for a long time.

Automatically turn off the screen, that is, standby, when needed.

Using the mobile phone with a single button will activate the power-saving circuit, and then the screen will light up.

4.The reason for the black screen is often the delay in the screen triggering circuit.

reflected. That is to say, the mobile phone system has already sent a command to light up the screen, but due to the delay of the circuit, the result has not been sent.

The screen didn't light up successfully, but the mobile phone system thought it was lit up, so it caused a black screen.