SM4186 IC Pinout Details Datasheet and Voltage Chart

In today’s post, I will provide you the SM4186 IC Pinout Details Datasheet and Voltage Chart which is specially used by technicians for LED TV black screen problems. SM4186 IC is a popular choice when it comes to diagnosing & repairing voltages such as CKV, VGL, VGH, AVDD, and VCOM.

sm4186 pinout details datasheet

In the next section, I have mentioned all the details related to SM4186 IC Pinout details Datasheet and Voltage Chart. If you want to know about the SM4186 IC Pinout details Datasheet, scroll below to read the shared information.

In case you are facing any issues or have queries then feel free to contact us through the comment section below. You can visit our social handles as well for the same. I will respond to your query as soon as possible.

How to repair the LED TV black screen problem using SM4186 IC

In LED TV’s black screen problem occurs when the panel does not have CKV, AVDD, VGH, VGL, and VCOM voltages. In this case, while repairing, it is generally assumed that DC to DC converter circuit is in safety mode. This assumption can be proved true if there is a short circuit in COF or Panel driver circuit.

To improve the Graphics quality of LED TV, two sets of LEDs having multiple gate driver (COF) circuits are placed between the panels. The DC-to-DC converter circuit goes into safety mode in the presence of short circuit in the driver or output circuits.

Here the voltage supply to the short-circuited driver circuit is stopped by disconnecting certain CKV connections of the panel.

When the DC to DC converter circuit becomes active, one part of the panel is fully activated. Now light graphics will be visible on the screen so that the problem of the black screen can be solved by finding the CKV connections from the figure and data of SM4186 IC.

SM4186 IC Datasheet Pinout Details Datasheet and Voltage Chart

Here I have explained all the SM4186 IC Pinout voltage details according to the IC pin number. To understand the SM4186 IC pin number, you can see the below image.

sm4186 panel ic all voltage chart pdf

1.    AVDD 15 Volts
2.   12 AVDD Switch
6.   5 Volts
7.   1.8 Volts
9.   3.3 Volts
10. 1.8 Volts

12. Power Supply 12 volts

13. 3.3 Volts

15. 5 volts

16. Reset Pin

18. Enable

19. SDA Serial Data

20. SCL Serial Clock pulse

23. 3.3 Data

25. STV Vertical signal

26. CPV1 – 1.6 Volts

27. CPV2 – 1.6 Volts

29.AVDD 15Volts

30. 12 Volts Power Supply

31. VOFF (VGL) – – 9.5 Volts

32. -7.5 VOLTS

33. -7.5VOLTS

35. CKV 8.4 VOLTS Vertical Clock Pulse

36. CKV1 8.4 VOLTS Vertical Clock Pulse

37. CKV3 8.4VOLTS Vertical Clock Pulse

38. CKVB2 8.4VOLTS Vertical Clock Pulse

40. CKV2 8.4VOLTS Vertical Clock Pulse

41. VON (VGH) 30 VOLTS

42. SUPPLY 12 Volts here

46. VCOM (Common Voltage for all thin film Transistor)

47. SVCOM48. SVCOM 5.5 VOLTS

49. SVCOM 5.5 VOLTS50. 7.4 VOLTS

51. 7.5 VOLTS52. 7.5 VOLTS

54. 12 VOLTS SUPPLY here56. 12 VOLTS SUPPLY here

Learn More LED TV Fault Finding and Fixing Process

FAQ of SM4186 IC Pinout Details Datasheet and Voltage Chart

How To Repair LED TV screen problem SM4186 ic CKV Lines

In LED TV’s black screen problem occurs when the panel does not have CKV, AVDD, VGH, VGL, and VCOM voltages. To improve the Graphics quality of LED TV, two sets of LEDs having multiple gate driver (COF) circuits are placed between the panels. The full process of repairing is explained in the post above.

How to find SM4186 IC Pinout Details Datasheet and Voltage Chart

All the information related to the SM4186 IC Pinout Details Datasheet and Voltage Chart is shared in today’s post. Scroll up the article to read the details.

How to identify if IC is faulty or not?

Using analog multimeter dc scale x10 or x1. Probe – to GND & probe + to ckv line test point, you can identify if IC is faulty or not. Check if dc scales at the multimeter and Power on the tv with the remote, if any movement of the needle of the multimeter to the right then it is immediately off/goes down to the left, which means ic is in safety mode. But if nothing happens, ic is faulty.

About Dipankar Das

I am a Professional Electronics Technician, Blogger, Youtuber, Social Media Influencer, and founder of Dip Electronics LAB. I have profession on Electronics, PCB Designing, Project Making, Gadgets Repairing and 3D Printing. Keep visiting to get important information.

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