LG 32LK610BPUA, LG 32LK610BBUA – Roku LCD TV - checking image error, symptoms of main module faults with pictures

 

Video error-Video error, video lag-stop

Checking method
1. Check the signal strength or check whether the screen is normal when the external device is connected.
2. After measuring each voltage from power supply, finally replace the MAIN BOARD.

Video error –Vertical-Horizontal bar, residual image, light spot

As the part connecting to the external input, check the screen condition by signal

Video error- Color error

Check Link Cable (LVDS) reconnection condition.  Check the contact condition of the Link Cable, especially dust or mis-insertion.

Examples of Symptoms (Image error).  Check for poor cable contact

Color smear > Poor broken pin of FFC cable. Picture-1

R Color Excessive > Color is Excessive due to FFC Cable Contact.  Picture-2

Screen darkness > screen is dark due to poor contact due to disconnection of the FFC cable pin.  Picture-3

G Color Excessive > G color transient due to poor FFC cable connection.  Picture-4

Color spread > LVDS cable connection problem.  Picture-5, 6, 7

Screen stop > Due to foreign substance withi nLVDS cable PIN.  Picture-8

Examples of Symptoms (Main)

Screen noise > Bit noise from horizontal screen.  Picture-9

Screen noise > Broken screen due to Main IC problem.  Picture-10

Dark picture > Dark left-side screen.  Picture-11

Broken picture > Top/bottom screen part Picture problem due to tuner Inner side quality problem.  Picture-12

Broken screen > Broken screen in a horizontal manner.  Picture-13

Screen spread > Screen corner appears blurry.  Picture-14

Color Spread > Color spread on the screen.  Picture-15

Blurry Screen > Blurry picture on the screen.  Picture – 16

Broken picture > No problem at the initial stage, G-color spread after 10 minutes.  Picture 17

Right-side Screen problem > Right-side screen problem.  Picture 18

LG logo Screen problem > Screen picture spread problem.  Picture 19

Right-side picture problem > No problem at the initial stage.  During Heat run, right-side picture problem.  Picture 20

Examples of Symptoms (Module)

Isometric Horizontal Bar > Isometric horizontal bars occur throughout the screen. Picture 21

Internal matter > BLU internal foreign matter inflow.  Picture 22

Image broken > 6 block image broken.  Picture 23

Image broken > Screen sync signal broken.  Picture 24

Image broken > Internal damage and image breakage due to external impact.  Picture 25

Bend on the screen > Bending due to lateral external impact and internal bending of BLU.  Picture 26

Vertical smear > Vertical spreading on cube screen in no signal.  Picture 27

Over color > Screen contour part brightly Over color.  Picture 28

Vertical bar > Center Vertical Bar.  Picture 29

Screen darkness > Center of the screen 1 block dark.  Picture 30

Vertical bar > Center Vertical Bar.  Picture 31

Darkness at the bottom of the screen > MODULE internal BLU breakage.  Picture 32

LVDS cable symptoms and SMPS (power board) faults will follow by next post