SM4186 IC Datasheet and Pin Functions | SM4186 DC to DC IC Pins Voltage

SM4186 IC: CKV out information of SM4186 IC and details of pinout, pin voltage, and pin functions are published here.

SM4186 IC Datasheet and Pin Functions | SM4186 DC to DC IC Pins Voltage.

SM4186 IC for TCON processor and DC to DC Converter Circuit used in LSC320AN10-H03 TFT LCD panel.

In SM4186 IC Circuit, How do you solve the LED TV black screen problem?

When the LED TV's LSC320AN10-H03 panel does not have VGH, VGL, AVDD, VCOM, and CKV voltages, then in most cases, it can be assumed that the DC to DC converter circuit is in safety mode. Usually, the DC-to-DC converter circuit goes into safety mode if there is a short circuit in the panel driver circuit or COF.

Two sets of LEDs are placed between the panels to improve the graphics quality of LED TVs,
There are multiple gate driver (COF) circuits to drive those two sets of LEDs. If there is a short circuit in the driver or output circuits, the DC-to-DC converter circuit goes into safety mode.
By disconnecting certain CKV connections in this condition, the voltage supply to the short-circuited driver circuit is stopped.

The DC to DC converter circuit becomes active, one part of the panel is fully activated, and light graphics are visible on the screen so that you can find the CKV connections from the figure and data of SM4186 IC.

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SM4186 IC Datasheet ( Pinout )

1.   AVDD 15 Volts
2.   12 AVDD Switch
6.   AVDD Out 15 Volts.
7.   1.8 Volts
9.   3.3 Volts
10. 1.8 Volts                                                                              
12. Power Supply 12 volts
13. 3.3 Volts                                                                              
15. AVDD 15 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

RT995 IC LED TV Power Management Schematic Circuit Diagram - CLICK HERE 

SM4186 IC Datasheet, CKV, and Pin Functions

  

SM4186 IC Schematic Circuit Diagram → HERE

29:   AVDD 15Volts
30:  12 Volts Power Supply
31: VOFF (VGL) -      - 9.5 Volts
32:  -7.5 VOLTS
33:  -7.5VOLTS
35,36: CKV1 - 8.4 VOLTS
37: CKVB1 - 8.4VOLTS
38, 39: CKV2 - 8.4VOLTS
40: CKV2 - 8.4VOLTS
41: VON (VGH) 30 VOLTS
42: SUPPLY 12 Volts here
43: GND

ALL LED/LCD TV FACTORY MODE OPENING CODE - HERE

46: VCOM (Common Voltage for all thin film Transistor)
47: SVCOM
48: SVCOM 5.5 VOLTS
49: SVCOM 5.5 VOLTS
50: 7.4 VOLTS
51: 7.5 VOLTS
52: 7.5 VOLTS
54: 12 VOLTS SUPPLY here
56: 12 VOLTS SUPPLY here

LCD: How Does a Liquid Crystal Display Panel Work? Click Here

[SM4186 IC Related Video]

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Please comment if you have any queries about the SM4186 IC Datasheet or Pinout.

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