LG / GOLDSTAR DP9821
Manual de Usuario

LCD TROUBLE SHOOTING GUIDE(1/2)
Appear shadow form interference in black background DESPLAY CONDITION? There is only bring light.(LCD B/D abnormal) NO FUSE NORMAL? YES NO IC(U1) NORMAL OPERAE YES NO 7.5V, 15V, -14.5V Normal? YES NO D2, D3, D8 Check Main B/D on located IC(U1) Check and Replace Fuse Replace INVERTOR ABNORMAL

+5V Normal? YES Y/C Display signal? YES

IC(U6) Check and Replace

NO

A/V IN S/W Check

R. G .B signal output? YES

NO

IC(U2) Check and Replace

NO VCOM signal?(5.5Vpp) IC(U3) Check and Replace

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