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Troubleshooting
3. Noise: Internal noise may be caused by a foreign substance on the fan or driving device. For a DLP TV, the lamp fan, DMD board fan and color wheel are vulnerable to noise. Sometimes the connector wire around the lamp or DMD fan makes contact with the fan, while the color wheel is protected inside the module and cannot make contact with any nearby wires. However the color wheel sensor or the drive motor may cause noise by making contact with the color wheel. As the color wheel uses an air bearing system, it has a very slight possibility of creating internal noise. Sometimes outworn transistors may cause noise when regular noise occurs for other reasons than the fan itself.When irregular noise occurs for no particular reason, check the inside of the TV for any foreign substances. The DLP projection TV may cause noise as the physical screen is empty inside, causing a resonance to a particular frequency. Thus a low vibration is not a malfunction. Any 'creaking' noise is mostly from the structure of the device itself. A short, harsh noise may occur from a distortion or malformation due to thermal expansion between the metal joints, screws and loaded parts, respectively. Any intermittent 'creaking' noise can be removed by loosening the screws. 4. Black Screen (Voice Output): Check the lamp/ballast of the replacement and, if there is nothing wrong, check the array resistance RA701-RA704 for the wave form or look into the connector joint areas as described in the manual (p.6-1). When the measurement is not +- 25v, DDP1011 is in error. In conclusion, you should replace the DMD board.
Lamp On Yes No Check if the lamp is on
Check RA701 ~ RA704 TP (See page 13-7)
No
DDP1011 Error
5. A black screen with the lamp on: Replace the DMD board. 6. Line Pattern: Regular line patterns occur vertically or horizontally: Replace the DMD board. 7. Voice Distortion: Replace the analog board. 8. Outside Light: This is not a product malfunction, but a possible installation or human error. This occurs when the projected light from the surrounding illumination reflects onto the screen. This disappears as the TV starts operating and the TV lamp gets brighter. However, you can avoid outside light by changing the position of the TV or the installation angle. Decreasing the illumination or changing the indoor lighting may work. 9. Screen Flip-over: Enter Factory mode in DDP1011 and perform H-Flip (flip horizontally) and V-Flip (flip vertically). The screen will flip over horizontally or vertically.
Samsung Electronics
6-3
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