REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Tuesday 26 February 2019

HLP SERIES SAMSUNG PROJECTION TELEVISIONS NO TURN ON-NO VIDEO

HLP SERIES SAMSUNG 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
Posted By: FRANK at 03:51
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