Brand:
LG
Category: Desktop Computer
Document Type: Parts/Service
Language: EN
Parts/Service for W2243T
Uploaded: Nov. 21, 2025, 6:38 p.m.
1. LCD CHARACTERISTICS
Type: matrix-TFT Color LCD Module
Active Display Area: 21.53 inches
Pixel Pitch: 0.248 (H) x 0.248 (V)mm
Color Depth: 16.7M colors
Size: 495.6(W) x 292.2(H) x 16.35(D) mm (Typ.)
Display Mode: LTN Mode, Normally White
Surface Treatment: Anti-Glare, 3H
Electrical Interface: Dual channel LVDS
2. OPTICAL CHARACTERISTICS
2-1. Viewing Angle by Contrast Ratio > 10
Left: 150°min, 170°(Typ) Right: 150°min, 170°(Typ)
Top: 140° min, 160°(Typ) Bottom: 140°min, 160°(Typ)
2-2. White Luminance (Center ): 300Cd / m² (Typ)
2-3. Contrast Ratio: 600(min), 1000(Typ)
3. SIGNAL (Refer to the Timing Chart)
3-1. Sync Signal
Type: Separate Sync, SOG (Sync On Green) / Digital
3-2. Video Input Signal
1) Type: R, G, B Analog, Digital
2) Voltage Level: 0~0.7 Vp-p
3) Input impedance: 75 Ω
3-3. Operating Frequency
Horizontal: 30 ~ 83kHz
Vertical: 56~75Hz
4. Max. Resolution
D-sub Analog: VESA 1920 x 1080 @ 60 Hz
5. POWER SUPPLY
5-1. Power: AC 100-240V~50/60Hz 1.0A
5-2. Power Consumption
On Mode: 40 W(Typ.)
Sleep Mode: ≤ 1 W
Off Mode: ≤1 W
6. ENVIRONMENT
6-1. Operating
Temperature: 10°C~35°C
Humidity: 10 % to 80 % non-Condensing
6-2. Storage
Temperature: -20°C to 60 °C
Humidity: 5 % to 90 % non-Condensing
6-3. MTBF: ≥70000 Hours (Not include panel)
Lamp Life: ≥50000 Khrs
7. DIMENSIONS (with Stand)
Width: 51.64 cm (20.33 inches)
Depth: 19.80 cm (7.80 inches)
Height: 39.61 cm (15.59 inches)
8. WEIGHT (excl. packing)
Weight: 3.8 kg (8.38 lbs)
Type: matrix-TFT Color LCD Module
Active Display Area: 21.53 inches
Pixel Pitch: 0.248 (H) x 0.248 (V)mm
Color Depth: 16.7M colors
Size: 495.6(W) x 292.2(H) x 16.35(D) mm (Typ.)
Display Mode: LTN Mode, Normally White
Surface Treatment: Anti-Glare, 3H
Electrical Interface: Dual channel LVDS
2. OPTICAL CHARACTERISTICS
2-1. Viewing Angle by Contrast Ratio > 10
Left: 150°min, 170°(Typ) Right: 150°min, 170°(Typ)
Top: 140° min, 160°(Typ) Bottom: 140°min, 160°(Typ)
2-2. White Luminance (Center ): 300Cd / m² (Typ)
2-3. Contrast Ratio: 600(min), 1000(Typ)
3. SIGNAL (Refer to the Timing Chart)
3-1. Sync Signal
Type: Separate Sync, SOG (Sync On Green) / Digital
3-2. Video Input Signal
1) Type: R, G, B Analog, Digital
2) Voltage Level: 0~0.7 Vp-p
3) Input impedance: 75 Ω
3-3. Operating Frequency
Horizontal: 30 ~ 83kHz
Vertical: 56~75Hz
4. Max. Resolution
D-sub Analog: VESA 1920 x 1080 @ 60 Hz
5. POWER SUPPLY
5-1. Power: AC 100-240V~50/60Hz 1.0A
5-2. Power Consumption
On Mode: 40 W(Typ.)
Sleep Mode: ≤ 1 W
Off Mode: ≤1 W
6. ENVIRONMENT
6-1. Operating
Temperature: 10°C~35°C
Humidity: 10 % to 80 % non-Condensing
6-2. Storage
Temperature: -20°C to 60 °C
Humidity: 5 % to 90 % non-Condensing
6-3. MTBF: ≥70000 Hours (Not include panel)
Lamp Life: ≥50000 Khrs
7. DIMENSIONS (with Stand)
Width: 51.64 cm (20.33 inches)
Depth: 19.80 cm (7.80 inches)
Height: 39.61 cm (15.59 inches)
8. WEIGHT (excl. packing)
Weight: 3.8 kg (8.38 lbs)
Troubleshooting and error codes
| Trouble | Symptom | Diagnosis / Solution |
|---|---|---|
| 1. NO POWER | (Power Indicator Off) | Please reinsert and make sure the AC of 100-240v is normal (NO) → Check the Adapter/Inverter section (YES) → Measure U704 PIN2=1.8V, U703 PIN2=3.3V (NO) → Check CN701 or replace U704, and U703 (YES) → Check X401 oscillate waveforms are normal (NO) → Replace X401 (YES) → Replace U401 |
| 2. NO RASTER (OSD IS NOT DISPLAY)-LIPS | No Raster (OSD Is Not Displayed) | Check CN701 PIN 6, PIN7 =5V? (NO) → Check power board and find out a short point as penning each power line (YES) → Check U703 PIN 2 =3.3V? (NO) → 1. Check U704, 2. Check C703,C707 (YES) → Check U704 PIN 2 1.8V? (NO) → 1. Check U704, 2. Check C704, 3. TROUBLE IN SCALER IC (YES) → Check CN701 PIN 6, PIN7 =5V? (NO) → Check BL ON/OFF pulse as contacting scope (YES) → LIPS |
| 3. NO RASTER (OSD IS NOT DISPLAY)-MSTAR | No Raster (OSD Is Not Displayed) | SCALER PIN 127, 128 OSCILLATES AS 12MHZ? (NO) → 1. Check C420 C421, 2. Check X401, 3. TROUBLE IN SCALER IC (YES) → SCALER IC PIN 41 H SYNC ? PIN 42 V SYNC? (NO) → CHECK CONNECTION LINE FROM D-SUB TO SCALER (YES) → TROUBLE IN CABLE OR LCD MODULE |
| 4. TROUBLE IN DPM | TROUBLE IN DPM | SCALER IC PIN 41 H SYNC? PIN 42 V SYNC? (NO) → CHECK H/V SYNC LINE (YES) → TROUBLE IN CABLE OR LCD MODULE |