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!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Thursday 21 February 2019

SAMSUNG - HLR - 4667W SERIES DLP TV SERVICE HELP - WORKING PRINCIPLES

SAMSUNG - HLR - 4667W SERIES DLP TV SERVICE HELP - WORKING PRINCIPLES





LIGHT ENGINE FAILURE INSPECTION


  1. When the Power is plugged in, DC 330V is automatically supplied to ballast >> Check whether this DC330V is  present at ballast.
  2. When Power Key is pressed via the remote control, the micom of the analog board outputs High (5V) PWR signals.  The power board operates normally, if 5V and 12V are supplied  to the DMD CN-602 terminal  >> Check whether 5V and 12V are supplied to the CN-602 terminal.  * 12V must be there to operate the motor.
  3. The MTR reset signals is supplied to the TP713 terminal of the motor IC704 from the micon on the digital board and then motor starts to drive.  >>  After the set is Powered ON, check whether this 5V is detected on pin number [20] of IC704.  
  4. If the color wheel rotates for a certain time and then stops, check whether the color wheel sensor is normal.  After a while, the sound generated by the rotating color wheel is heard. (If 5V is not detected, the motor will not operate.)
  5. Check whether the signal [SCI: Start Control Input] that turns the Lamp #2 of CN504 on DMD board is high (5V).  Check this voltage.  When SCI is high (5V), the lamp litz  of CN504 is low (0V).  If CN504 #2 terminal voltage changes to pulse waveform from 14 seconds after [for a 50"TV] the time that the voltage is (5).  When about 4 seconds have passed after changing to pulse waveform, the screens are displayed on the set.
  6. Method for checking whether the DDP1011IC reset is normal >> If the voltage R204 is 3V, it is normal.
LAMP REPLACEMENT

Lamp Type [UHP 100W / 120W 1.0, E22, 65*70]
LAMP BALLAST [EUC 120 P/H11, 120W, 130mm ca

  • Replace the correct code numbered lamp to avoid damage to TV.
  • Turn the power Off, and wait for 30 minutes before replacing the lamp, as it will be hot.
  • Do not touch the glass part of the lamp with bare hands nor insert any foreign object inside the cover as it may cause poor screen quality, electric shock of fire.
  • Be sure to connect this TV directly to an AC wall outlet to help cooling fan to work more time to cool the lamp.
  1. Unplug the TV from AC mains and remove four screws of the lamp lid.
  2. Remove lamp cover.
  3. Remove the screw securing the Lamp.
  4. Seperate the lamp from the engine by holding the handle and pulling it out.
  5. To re-install lamp, follow these steps in reverse process.
Posted By: FRANK at 02:05
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