Samsung HLP2

SAMSUNG [HLP SERIES] PROJECTION TELEVISIONS [NO TURN ON-NO VIDEO]

 Verify and make sure that  the ballast operation is OK before proceed.
The symptom can range from 

No video.
No turn On [Dead].
LED error code flashing.

There are 3 types of chassis involved in 2004 DLP line.  

L3 & L5 CHASSIS SET-UP

1. Remove the lower back cover of the unit.
2. Remove the Lamp Assembly from the Light Engine.
3. Pull back the Light Engine Assembly slightly and do Ballast Test. Follow up.

• Plug in the unit.
• Turn Power ON.
• During DLP lamp start process, the DMD PCB activates the Ballast PCB.  If the Ballast is operating properly, the linger Spark Gap Tube will begin to glow a few seconds into the process.  The Spark Gap Tube should only glow for a short time, and must go dark.  An audible sound is also heard during this time.  This procedure will repeat every 15 to 30 seconds for approx: 2 to 4 minutes.  
• If the Spark Gap Tune ignites, yet lamp never turns ON, make sure that the lamp is defective.
• If the Tube does not light up; check and change the power supply PCB.  If it lights up, check/change the DMD PCB.  Check all connections from and to the DMD PCB.

L7 CHASSIS SETUP

1. Remove the back cover of the unit.
2. Remove Lamp Assembly from Light Engine.
3. Remove plastic ballast cover and pull back the light engine.

L7 BALLAST TEST

• Plug in the unit.
• Turn power ON.
• During DLP lamp starting process, the DMD PCB activates the Ballast PCB.  If the Ballast is operating properly, the Igniter Spark Gap Tube will begin to glow for a few seconds. The Spark Gap Tube will only glow for a short amount of time, and then go dark.  An audible sound is also heard during this time.  This process will repeat every 15 to 35 seconds for a period of 2 to 6 minutes.  
• If the Spark Gap Tube ignites, yet the Lamp never turns ON, replace the Lamp.  It is defective.
• If the tube does not light up, check and change the power supply PCB.  If it lights up, check/change the DMD PCB.  Check all connections to and from the DMD PCB.