Samsung HLT6187SX Service Manual page 49

Troubleshooting
7. Other Screen Errors:
6-2
▶ 40 Vertical lines 16 pixels wide:
DDP3021 or BGA, DMD panel interference.
→ Replace the DMD board or DMD Panel
.
▶ Horizontal Bar or No Raster:
Error in DAD2000 or DMD Panel or other DMD board problem.
→ Replace the DMD board or DMD Panel
▶ Dotted Vertical Bar:
Error in Rambus Dram(IC 403) or the soldering
→ Replace the DMD board
▶ Beehive mosaic patterns all over the screen:
Error in the TMDS Receiver (IC100) or the soldering
The H sync signals are not transferred to DDP3021.
→ Check the Digital Board and DVI cable If there was no problem,
Replace the DMD board
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