led tv 소리만나오는 불량 65인치 이 조그만 녀석 때문에 이렇게 고장이 납니다.

nice to meet you. It is Doraiba tv. After a long time, I came out with a TV like a Doraiba TV. Two men in the morning. Dragged into a big carrier Usually we have to repair it up to 60 inches I have received. This model is a 65-inch model. If you look at the desk, It's a big desk, but it's oversized. When you first called, The backlight is bad. You gave me a call. In such a state that there is no screen at all I'm in stock. Once the screen does not appear, Backlight failure is not true. There are many reasons why the screen does not appear. Even if power is bad once ~ Power is what you see right now. Even if the power is bad If the output drops or goes down The light may not come in. Or you can drive Even if the board is defective The screen will disappear. And There is one that looks at the other end. It's a driver board. It is like a ballast that turns on an LED lamp, a stabilizer when you compare it to a fluorescent lamp. If it also becomes defective There are symptoms that the light does not light up. for now Which is bad I will try to confirm it by turning on the power. Usually up to 60 inches alone It's possible to work. In fact, if you are like 65 inches by 5 inches It is difficult to replace the light by yourself. So we usually get a repair receipt up to 60 inches I do not accept from 65 inches .... This model Continue to advertise for DP in the store Because it is used for DID purpose You came in haste in the morning. What kind of situation Turn on the power once Let me check. Maybe it comes on the camera screen. Too large Here you see the lamp It comes in red. Power to ~ I'll try to come. now.. The color of the lamp should not be checked well. You can see the blue light. It is ON state. From the basic voltage first I'll check it out. first... From the voltage relationship 1.8V coming out. The 5V voltage comes out well. 3.3V comes out well Firmware is also well on its way. Sounds good too. This model Board and Two conversion boards It's a combined form. The panel voltage at this power Just to the panel board It's supposed to go in. A little bit of structure It is different. Once the basic voltage section There seems to be no abnormality. The light part is 24V as it is It's all in. Now all 5V, 12V, 24V It's coming out normally. And since it's on and off Naturally, it seems that there is no problem with the standby voltage. So once it really is backlight failure I guess I'll have to test it. first Power supply. I'm setting it to 24V. I made this one for simple printing. I use it well. And It is a device that turns lights on and off. I made it. This is also useful as well. On the driver board shown here So much money in the camera For example, let me show you another board. Usually this is the driver board. When testing the driver board On-off next + - Make this connection. Here you see the resistance. I put a variable resistor on it. The output is about 3.7V. I'll put it here and I'll turn it off. So If the light comes in normally Light is not bad ~ You see It is consumed about 24v 4.6A. In conclusion, the light comes on. You see. Here the light The TV is too big to come in on the screen. Once right now the light is normal The light comes on. So, in conclusion, It's not a bad backlight. The driver board side If you force the power on If it does, it is not a bad driver board. It will take some time, I'll try to repair it. I'll do it. I moved the seat. I have separated the boards separately. I found one suspicious part. As I have seen before Driver board and backlight are both normal if so Without board, power, or luck There is a defect in the t-con board. Once on-off operation Repeatedly On-off voltage It happens on the board. To put it easy When the user presses the switch on the main board The signal is on. Toward the driver board It has to be supplied. I measured it. Bright and leaving the board on / off, br Two signals go out. The br signal is normal. The on-off signal You're dying. if so Here this way This pin This pin That's br. This is on / off. It seems to be bad. It does not seem normal. Remove and replace the same device on a similar board. Replacement It's over. It is not easy to replace between plastic. This is the device now. Because of this element On-off voltage I could not create it. Actually, go over there Connect the board Let me check if it works. I turned the power on. uhd tv It's Sky Media. 4k is supported model. The video is good. Today is a 65 inch TV model. It is a product used for did You came to think of backlight failure. Not bad on the light side. Board On / off is not possible due to the switch element for on-off That was the case. If you have a little help and look at the subscription, please. It was more than Doraiba TV.

Channel: 우리동네도라이바TV

Views: 300,397

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Id: iFjOvyaT26s

Length: 12min 13sec (733 seconds)

Published: Mon Jun 24 2019