Brand: acer
Category: LCD TV
Document Type: Parts/Service
Language: EN
Parts/Service for AT4250DTV
Uploaded: April 20, 2026, 7:42 p.m.
Manual Publish Date: 2006-12-11
Warranty Information
None
Overview
LCD Panel
Max. resolution: 1920 x 1080, 20 CCFTs backlight system, Display area: 42 inches, Display color: 16.7 million colors, Input signal: two-channel LVDS, Contrast ratio: 1200/1 (typical), Brightness: 500 Cd/m² (typical), Response time: 6.5 ms, Viewing angle: 88° (L)/ 88° (R), 88° (U)/ 88° (D)
I/O Functions
21-pin Euro-SCART, RCA jack, 15-pin D-sub, 19-pin HDMI connector, DIN45325 terminals for TV/CATV and DVB-T input
Video Functions
PAL/NTSC/SECAM support, 480i/576i, 480p/576p, 1080i, 720p, 1080p format support, Built-in Teletext, dynamic adaptive smoothing filter, temporal frame-filter noise reduction, motion and edge adaptive de-interlacing, Film mode 3/2 & 2/2 pull down, Screen display model 16/9 & 4/3 & panorama & zoom
Mechanical
VESA mounting holes
Multi-Sound System
NICAM, FM Stereo (A2)
Power Source
Input voltage: 90~264V, 47~63Hz, Input current: 2.71A, Power consumption: 291W
Remote Control
Multi-function remote control
Speaker
Internal speaker: 10W x 2 stereo, adjustable volume
Others
On-screen display adjustment function, ISP (In System Programming) function available
Troubleshooting and error codes
| Problem | Possible Cause | Solution |
| AV1 and AV2 No Display | CVBS Cable plug in? | Check CVBS cable or Replacement CVBS Cable |
| Replacement I/O Board | ||
| CVBS cat display | Replacement M/B Board | |
| Speaker No Sound | Audio R/L source had plug IN? | Check Audio R/L source cable |
| Video can Display? | Check Video cable or Replacement Video Cable | |
| Mute turn off Volume set 50 | N/A | |
| Speaker R/L cable plug IN? | Check Speaker cable or Replacement Speaker cable | |
| Speaker have Sound Output | Replacement IO/B or Speaker | |
| Speaker have Sound Output ? | Replacement M/B | |
| VGA No Display | VGA Cable plug in? | Check VGA cable or Replacement VGA Cable |
| EDID Data Normal? | Write EDID data | |
| VGA can display? | Replacement M/B | |
| HDMI No Display | HDMI Cable plug in? | Check HDMI cable or Replacement HDMI Cable |
| EDID Data Normal? | Write EDID data | |
| HDMI can display? | Replacement M/B | |
| HDMI No Sound | HDMI Cable plug in ? | Check HDMI cable or Replacement HDMI CABLE |
| EDID Data Normal ? | Write EDID data | |
| Sound output? | Replacement Main/B | |
| VGA No Sound | PC can Display ? | Check Video cable or PC or Replacement VGA cable |
| Mute turn off Volume set to 50 | N/A | |
| Audio Line in Cable Plug IN? | Check Line in cable or Replacement Line in Cable | |
| Sound Normal ? | Replacement Main/B | |
| COMPONENT No Sound | Component Cable plug in? | Check Component cable or Replacement Component Cable |
| Mute turn-off Volume =30 Earphone remove | N/A | |
| Component Source can Display? | Check Component cable or Replacement Component Cable | |
| Component Sound Normal? | Replacement IO/B | |
| Component Sound Normal? | Replace M/B | |
| SCART/AV/S-Video No Sound | AV1/S-Video/R-L Cable plug in? | Check Video and R-L cable or Replacement Video or R-L Cable |
| Mute turn-off Volume =30 Earphone remove | N/A | |
| AV1/S-Video Source can Display? | Check Video and R-L cable or Replacement Video or R-L Cable | |
| AV1/S-Video Sound Normal? | Replacement IO/B | |
| AV1/S-Video Sound Normal? | Replace M/B |