LG 26LC2D User manual

R
LCD TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : LA63E
FACTORY NAME : 26LC2D-UE
MODEL : 26LC2D
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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4. RGB_PC doesn't display
Check input connect P7004. Can you see the normal waveform? P7004 may have problem. Replace this Jack. Check the input of Component switch(IC5002). Can you see the normal waveform?
After checking the input TR of RGBHV, you should decide to replace these components or not.
No No No No No Yes
Yes Yes Yes Yes
Check the output of Component switch(IC5002). Can you see the normal waveform? After checking the Power of RGB switch you
should decide to replace component switch or not.
Yes
Check the input of MST3361(IC7004 Pin41,44,46). Can you see the normal waveform?
After checking the Power of MST3361 you should decide to replace MST3361 or not.
Check the output of MST3361(IC7004 ). Can you see the normal waveform? After checking the Power of MST3361 you should
decide to replace MST3361 or not.
Check the input and output of BCM3550(IC4006). Especially you should check The H,V sync and clock. Can you see the normal waveform?
This board has big problem because Main chip(BCM3550) have some troubles. After checking thoroughly all path once again, You should decide to replace BCM3550 or not.

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5. HDMI doesn't display
Check input connect P7007. Can you see the normal waveform? P7007 may have problem. Replace this Jack. Check DDC communication lines(IC7013 Pin5,6) After checking the Power of this chip, you should
decide to replace this or not.
No No No No No Yes
Yes Yes Yes Yes
Check HDCP communication lines(IC7005 Pin5,6) After checking the Power of this chip, you should
decide to replace this or not.
Yes
Check the input of MST3361(IC7004) This signal is TMDS. Can you see the normal waveform?
After checking the trace of TMDS lines and power of MST3361, you should decide to replace MST3361 or not.
Check the output of MST3361(IC70 Can you see the normal waveform?04 ). After checking the Power of MST3361 you should
decide to replace MST3361 or not.
Check the input and output of BCM3550(IC4006). Especially you should check The H,V sync and clock. Can you see the normal waveform?
This board has big problem because Main chip(BCM3550) have some troubles. After checking thoroughly all path once again, You should decide to replace BCM3550 or not.

BLOCK DIAGRAM
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EXPLODED VIEW
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EXPLODED VIEW PARTS LIST
No. PART NO. DESCRIPTION
30919E0027X Cover Assembly, 26LC2D-UE LA63E 26" HIPS 405AF C/SKD
6304FAU020B LCD,Module-TFT, T260XW02-V5 DRIVER 26.0INCH 1280X768 550CD COLOR - - - -
3809900134D Cover Assembly, 26LC2 NON LG BRAND 405AF(C/SKD)
3043900029H Base Assembly, ASSY 26LC2R-ZJ LA63E STAND BODY ASSY
3043900026D Base Assembly, 32LC2D-UD NONE STAND BOTTOM C/SKD WITHOUT PRINTING
EBR32999901 PCB Assembly, SUB T.T LA63E 26LC2D-UE SUSULBM KEY TOTAL(EXCEPT MECH)
49519S0021G Plate Assembly, ASSY FRAME 26LC2D-UE,AUO,BCM,C/SKD
68719STA37A PCB Assembly,Sub, SUB T.T LA51D 42LC2D-UD ALUSLL - SIDE A/V
6709900016C
SMPS,AC/DC, LGLP2637HEP 90VTO264V 215W 47TO63HZ UL/CSA/SEMKO YY / AT / H&E YUYANG TELECOM CO.,LTD
or 6709900016A Power Supply Assembly, FREE H3/E2 LCD MODEL LCD LG ELECTRONICS LB LC
EBU32119801 Main Total Assembly, 26LC2D-UE [AUO] BRAND LA63E
49519S0030J Plate Assembly, ASSY REAR SHIELD C/SKD 26LC2D-UE BCM
EAB30827201
Speaker,Fullrange, C112K01K1450. FERRITE 15W 8OHM 83.5DB 170HZ 116 X 42 X 38.5 LUG
EBR31360201 PCB Assembly, SUB T.T LA63E 26LC2D-UE . Preamp+LED For DMS
4950TKA041B Plate, PRESS SBHG T1.2 FIX POWER SOCKET(BRAND 26LC2)
4811900063A Bracket Assembly, COVER 26LC2R LP61A BRACKET ASSY
35509K0197A Cover, MOLD HIPS 32LC2 HIPS CABLE MANAGEMENT
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