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 !

Friday 8 February 2019

SONY - KDF42WE655 _KDF50WE655 _KDF55WF655 _KDF55XS955 _KDF60WF655 _KDF60XS955 _ STANDBY LED BLINKING CODES & DETAILS

SONY - KDF42WE655 _KDF50WE655 _KDF55WF655 _KDF55XS955 _KDF60WF655 _KDF60XS955 _ STANDBY LED BLINKING CODES & DETAILS





SELF DIAGNOSIS DESCRIPTION & TROUBLESHOOTING

[3] Flashes of Standby light. [Lamp Cover Protect]


  • The tab at the back of the lamp cover makes contact with the switch on T board when the lamp cover is properly seated, which closes to ground CN8001/pin3. The ground is applied to the DE-micro IC6902/pin94. If the lamp cover is off or not properly seated a high is applied to IC6902/pin94, and the lamp turns off.  Confirm that the lamp cover is securely seated.  Confirm that CN6022 connector on the G2-board is properly seated.
[4] Flashes.  [Fan Rotation Protect]
  • Fan rotation is monitored and detected by the DE-micro IC6902/pin 92 (FAN-PROT). If a fan stops rotating IC6902/pin 92 goes high and turns off the lamp
  • Check the function of all the 4 fans (One of them is under optical block)
  • Fan maybe caught on wire harness or clamp
  • Fan itself maybe defective
  • Confirm CN6000 on G2-board is properly seated. Also check that the connector is not connected in reverse
  • Confirm SET 11V supply for Fans on CN6005 on G2-board
[4] Flashes can also be due to Temperature Protect.

  • When the temperature sensor on the H3 board (WE model) or H4 board (WF/XS models) detects high temperature or I2C-E line connector (CN6022:G2 board and CN44:H3/H4board) is not seated securely, De-micro turns off the lamp.
  • Evaluate TV environment for proper room temperature
  • A possible cause of this failure is missing I2C bus communications
  • Confirm I2C bus communications on CN6022/pin3 on the G2-board
  • Confirm DC power to the H4 or H3-boards (CN6021)
  • Replace H4 or H3 board (sensor is possible defective)
[5] Flashes.  [Lamp Driver Protect]

  • If the lamp driver fails or if the 260V from the Primary power supply is missing IC6902/pin 95 (LAMP-PROT) goes low, and the lamp will not turned on, along with IC6902/pin 95 (LAMP-HV-DET) in a low state at the same time; it is classified as no high voltage of the lamp driver problem.
  • Confirm that the 5 pin connector on the rear of the lamp is securely seated
  • Confirm that CN6022 on the G2-board is securely seated
  • Confirm 260V lamp supply on CN1605.
[6] Flashes.  [Low B Error Protect]

  • When DD 6V from the G1-board is not detected IC3604/pin129 (TV-micro) goes low and IC3604 turns off the main power (AC relay turns OFF).
  • Confirm G1-board DD6V output on CN6005/pinC3
  • Troubleshoot possible power supply problems on the F or G1-boards
  • Troubleshoot possible poor connections between [G1>(CN6005)>G2>(CN6019)> B-boards].
[7] Flashes.  [Audio Protect]

  • When DC voltage is detected at the speaker or woofer outputs, IC3604/pin128 (TV-micro) goes low and IC3604 turns off the main power (AC relay turns OFF).
  • Main cause of defective will be located on the KD-board.
  • Confirm KD-board is securely seated on the G2-board.
  • Replace KD-board.
[8] Flashes.  [D-OVP Protect]
  • When an over-voltage condition on the +3.3V or +2.5V DC lines is detected, IC3604/pin126 (TV-micro) goes low and it turns off the main power (AC relay turns OFF).
  • Substitute A-board, both +3.3V and +2.5V DC regulators are located on the A-board.
[10] Flashes.  [ATSC-OVP]
  • When Q-Box 5V (DTL5V) is not detected, IC3604/pin127 (TV-micro) goes low and it turns off the main power (AC relay turns OFF).
  • Confirm that CN6005 and CN6019 on the G2-board are securely seated.
  • Troubleshoot possible power supply problems on the F or G1-boards.
NO Flash.  [Lamp Error]

  • If the lamp driver fails or if the 260V from the Primary power supply is missing IC6902/pin 95 (LAMP-PROT) goes low (lamp does not turned on), along with IC6902/pin 95 (LAMP-HV-DET) in a high state at the same time; it is classifi ed as no lamp or dead lamp.
  • Confirm 260V lamp supply on CN1605
  • Substitute Lamp.
Posted By: FRANK at 05:21
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