What model is this infrared receiver? Which model can be used instead? Thank you

liys_sunny

What model is this infrared receiver? Which model can be used instead? Thank you [Copy link]

 

On the Internet TV box, SEK 1FN3L|K1EA

damiaa

Nowadays, generally all-in-one infrared receivers can be used as long as the pins match. You can try it out and see for yourself.

liys_sunny

damiaa posted on 2023-8-11 11:18 Nowadays, all integrated infrared receivers can be used as long as the pins match. You can try and see for yourself. ...

I have two VS1838Bs. I tried them yesterday and they didn't work, so I'm asking. I'll try again today. Thanks.

damiaa

liys_sunny posted on 2023-8-11 11:48 I have two VS1838Bs. I tried them yesterday and they didn't work, so I came to ask. I'll try again today. Thank you

Check if the pins on the board match the pins in your hand. If not, you need to draw and cross the pins. Even the three legs of the voltage and ground output must be connected correctly. Look at the board and the receiver information in your hand.

wangerxian

Infrared remote control receiver? Different models should be interchangeable, after all, they are all in the infrared frequency band.

liys_sunny

damiaa posted on 2023-8-11 11:52 Check if the pins on your board match the ones in your hand. If not, you need to draw and cross-connect the pins. Even if the three legs of the voltage and ground output must be connected...

I don't have any information, and there is no mark on the circuit board. I used a multimeter to measure it, and I only know that the potential of the middle foot is 3.18V lower than that of the two sides, which should be GND, but the two on both sides can't distinguish VCC and OUT. I swapped them and there was no remote control effect.

qwqwqw2088

Sometimes it is related to the wafer model inside the receiving head

damiaa

liys_sunny posted on 2023-8-11 14:44 I don't have any information, and there is no mark on the circuit board. I used a multimeter to measure it. I only know that the potential of the middle foot is 3.18V lower than that of the two sides. It should be GND, ...

Your tube is like the one above. Is it difficult to find the vcc on the board?

liys_sunny

damiaa posted on 2023-8-11 16:36 Your tube is like the one above. Is it hard to find the VCC on the board?

I'll try again, thanks.

liys_sunny

damiaa posted on 2023-8-11 16:36 Your tube is like the one above. Is it hard to find the VCC on the board?

I am worried that the receiver on the original board is not 38K, but I can't find this model.

liys_sunny

damiaa posted on 2023-8-11 11:52 Check if the pins on your board match the pins in your hand. If not, you need to cross-connect the pins. Even if the three legs of the voltage and ground output must be connected...

I tried it again last night. It worked for 1 minute after soldering, but it stopped working after that. I measured it with a multimeter. When no signal was received, the OUT output voltage was about 0.5V. When a signal was received, the voltage dropped to 0.45V instantly. This should be a quality problem of the component, right?

damiaa

liys_sunny posted on 2023-8-12 08:50 I tried it again last night. It worked for 1 minute after soldering, but then it stopped working. I used a multimeter to measure it. When it does not receive a signal, the OUT output voltage is about 0.5V. ...

Which receiver did you solder? Your problem doesn't necessarily mean it's the receiver. It can be used for 1 minute... Is there a bad contact or other problems on the board? This type of head is generally not easy to break. I have used tens of thousands of them and nothing has broken.

liys_sunny

damiaa posted on 2023-8-12 11:15 liys_sunny posted on 2023-8-12 08:50 I tried it again last night. It worked for 1 minute after soldering, but then it stopped working. I used a multimeter to measure it...

The receiver I soldered is a new one. The original receiver on the board was fine. I replaced it because I wanted to connect a wire to extend the receiver.

led2015

There may be certain compatibility requirements. It is best to choose an infrared receiver head of the same brand or model as this TV box for replacement.

liys_sunny

led2015 published on 2023-8-12 13:20 There may be certain compatibility requirements. It is best to replace the infrared receiver head with the same brand or model as this TV box.

I have searched for this model on the Internet for a long time and still cannot find any instructions.

damiaa

SEK SEMICONDUCTOR is one of the biggest semiconductor manufacturers in the China.

It seems to be a company in Shenzhen. Shenzhen Shiguang Semiconductor Co., Ltd.

https://seksemi.com/index.html

It is available on Taobao. I can't see the following posts. I don't know what happened. SEKSEMi Shiguang infrared receiver SR531FAC01N3L

damiaa

Really, there is 0.5 yuan on Taobao

damiaa

liys_sunny

damiaa posted on 2023-8-12 17:13 SEK SEMICONDUCTOR is one of the biggest semiconductor manufacturers in the China. It seems to be one of the biggest semiconductor manufacturers in Shenzhen...

The moderator is so great, thank you so much!!!

风太大了

As long as the pins are connected correctly, the infrared receiving module can generally be replaced. In the past, when repairing TVs, VCDs were often replaced.