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 !

Thursday 21 March 2019

DAEWOO DPM-42A1LBSB - PLASMA TV - SOFTWARE UPGRADE PROCEDURE - SERVICE MODE - RESET - POWER ADJUSTMENT

DAEWOO DPM-42A1LBSB - PLASMA TV - SOFTWARE UPGRADE PROCEDURE - SERVICE MODE - RESET - POWER ADJUSTMENT



SOFTWARE UPGRADE
  • Check whether MAIN PCB is connected to SUB PCB(PA901to P901).
  • Connect 9-PIN serial cable to the serial port of the computer.
  • Connect the opposite end of the serial cable to RS-232C port of SUB PCB.
  • Run Flashupgrader.exe in the PC to execute the program as shown below.
  • Select current Upgrade file
  • Click “Choose...” button to select the file you want to upgrade.
  • Select the file (pwSDK.inf) that you want to upgrade.
  • Select correct COM Port and Baud Rate(115200) as shown below. Then press Flash button to finish setup.
  • Turn on the ac power and then upgrade program will start the download as shown below.
  • When the upgrading is complete, a window (below) will be opened. Press “Finish” button to complete the process.
TO ENTER SERVICE MODE
  • Press “ <VOL ” à  “ MUTE  ” à “ RECALL  ” à  “ MUTE  ”  button of remote controller (R-53J17) {OR} Press “S9 ”button of SERVICE REMOTE CONTROLLER.
  • In the first line, there is the model name and the version of the upgraded program on the PDP set.
  • The automatically set offset values may different from the default value depend on  B/D.  However, the main B/D should be replaced or contact Kunpo  R&D center in Korea if the OFFSET values differ more than ±20 from default value.
RESET
  1. Level 1 –Resets all data in E2PROM other than HDCP key, EDID, RGB offset and YPbPr offset of Pw3300_1.
  2. Level 2 –Resets all data in E2PROM other than the exception of Level 1 and Pw318B_1.
  3. Factory – Resets the data of auto search, language setting, time setting, and the user menu values that could be reset by ‘Initialize’ function in Feature mode.
POWER ADJUSTMENT
  • Power Adjustment – Adjusting to standard power voltages, which are written in the upper right side of PDP module.  PDP module makers while producing already adjusted these values.  Therefore, if there are some problems in picture after adjusting, you should classify that PDP module as a fault and contact to PDP module maker.
  • Input Video Pattern – 100 IRE Full White Pattern.
                                                          Voltage Adjustment Label
Vs (Sustain Voltage) : Discharge Sustain Voltage
  • Measurement Equipment : Digital Volt Meter (DC volt mode)
  • Adjusting TP : TP204
  • Adjusting Location : RV203
  • Optimum Adjusting Voltage : The voltage which is written in the label located in upper right side of the PDP module. (Typical Voltage: 187V)
Click on image to Enlarge
High voltage S/W
  • Do not touch while operating
  • When replacing a power board make sure to check these switches.  High voltage S/W à “HIGH”
Posted By: FRANK at 02:02
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