Question about Sony Grand WEGA KDF-42WE655 42" Rear Projection HDTV

4 Answers

Sony Wega 42" LCD HDTV

Screen keeps turning off followed by the green power/standby light flashing several times. This has been cycling all day. I pulled the lamp and retightened all the screws but it is still doing it. Any suggestions?

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  • Flyers19 Nov 05, 2007

    Same thing...power turns on normally, then after about a minute it cycles off with a green flashing light as if it is resetting itself. It then comes back on and works fine. It happens every time i turn the tv on. KDF-42WE655

  • Brick James Dec 24, 2007

    I have the same problem. So, should I try to do it myself ( I have no exp. but I do tinker a bit with electronics ) or send to a repair shop. And if I do send to a repair shop, how much ( ball park figure )should I look forward to pay to fix.

  • OSCAR GARCIA Dec 31, 2007

    I HAVE A SONY WEGA KDF 60XS955 STARTS AND A MINUTE LATER POWER GREEN LIGHTS TURNS RED AND THE IMAGE OF THE TV IS GONE AND IT DOES THE SAME ON AND ON.

    I ORDER A NEW LIGHT BECAUSE I RAN THE SELF DIAGNOSTIC AS THE SERVICE MANUAL INDICATES AND IT SHOWS 3 ERRORS 1.- IS THE LAMP ERROR ALTOUGHT IT DOES NOT SHOW IT IN THE FRONT PANEL RIGHT NEXT TO SD CARD 2.- LAMP COVER AND 3.- LAMP DRIVER, NOW WHAT I DID AND HOPE I'M RIGHT JUST INCASE IF THE NEW LAMP DOES NOT WORK THEN MY SECOND CHOICE WOULD BE THE T BOARD THE SWITCH # CN 8001 COULD BE THE PROBLEM AND IN CASE IF DOES NOT WORK MY LAST RESOURCE WOULD BE THE BOARD G2 PART NUMBER 9-965-974-01, THAT FOR SURE WOULD FIX IT IT HAS THE IC 6902 THAT CONTROLS THE LAMP AND THE T BOARD.

  • OSCAR GARCIA Jan 05, 2008

    A i stated before the probably solution to fix my tv was by changing the lamp, and i was right the contant turn on and off the tv waas caused because the lamp was not working , already replaced it and my TV is now working fine. Hope this will help you solve the problem of your TV if you have a QUESTION E MAIL ME AT SOYCABRON1@HOTMAIL.COM AND I CAN HELP YOU

  • kattv Apr 02, 2008

    I have the same exact problem with mine!!!!!!!!!!!!

  • Anonymous May 18, 2008

    i took it apart, cleaned the inside.

  • spring3136 Jun 30, 2008

    how do you run a self diagnostic check

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I've been trying to find th thermal fuse on a 42we655 for like 3 weeks...It's not under the lamp...Any one know where it is?

Thanks

Posted on Mar 22, 2008

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My tv is flashing 3 times and i have tightened the bulb housing like 5 times and still green light comes on then immediatly off with three red blinks then a few seconds 3 red blinks again

Posted on Feb 22, 2010

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Self-Diagnosis Descriptions and Troubleshooting Tips: Lamp Cover Protect (3 Flash) The tab at the back of the lamp cover makes contact with the switch. Troubleshooting Tips: 1) Confirm that the lamp cover is securely seated. Fan Rotation Protect (4 Flash) If a fan stops rotating IC6902/pin 92 goes high and turns off the lamp. Troubleshooting Tips: 1) Check the function of all the 4 fans (One of them is under optical block) 2) Fan maybe caught on wire harness or clamp 3) Fan itself maybe defective 4) Confirm CN6000 on G2-board is properly seated. Also check that the connector is not connected in reverse 5) Confirm SET 11V supply for Fans on CN6005 on G2-board Temperature Protect (4 Flash) When the temperature sensor on the H3 board detects high temperature is not seated securely, DEmicro turns off the lamp. Troubleshooting Tips: 1) Evaluate TV environment for proper room temperature 2) A possible cause of this failure is missing I2C bus communications 3) Confirm I2C bus communications on CN6022/pin3 on the G2- board 4) Confirm DC power to the H4 or H3-boards (CN6021) 5) Replace H4 or H3 board (sensor is possible defective) Lamp Driver Protect (5 Flash) 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 turn 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. Troubleshooting Tips: 1) Confirm that the 5 pin connector on the rear of the lamp is securely seated 2) Confirm that CN6022 on the G2-board is securely seated 3) Confirm 260V lamp supply on CN1605 Low B Error Protect (6 Flash) When DD 6V from the G1-board is not detected IC3604/pin129 (TVmicro) goes low and IC3604 turns off the main power (AC relay turns OFF). Troubleshooting Tips: 1) Confirm G1-board DD6V output on CN6005/pinC3 2) Troubleshoot possible power supply problems on the F or G1- boards 3) Troubleshoot possible poor connections between[G1>(CN6005)>G2>(CN6019)> B-boards] 4) Check Thermal fuse under the lamp. Audio Protect (7 Flash): 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). Troubleshooting Tips: 1) Main cause of defective will be located on the KD-board 2) Confirm KD-board is securely seated on the G2-board 3) Replace KD-board D-OVP Protect (8 Flash) 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). Troubleshooting Tips: 1) Substitute A-board, both +3.3V and +2.5V DC regulators are located on the A-board ATSC-OVP (10 Flash) 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). Troubleshooting Tips: 1) Confirm that CN6005 and CN6019 on the G2-board are securely seated. 2) Troubleshoot possible power supply problems on the F or G1- boards Lamp Error (no Flash) 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 classified as no lamp or dead lamp. Troubleshooting Tips: 1) Confirm 260V lamp supply on CN1605 2) Substitute Lamp

Posted on Aug 31, 2007

Self Diagnostic check is as follows:
press display, 5 button, volume down then power... execute this while tv is plugged in and in off position. First time press 8 then "ENT" to clear diagnostic, repeat and you will see current diagnostic status.

Posted on Jul 29, 2008

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Sony LCD turns off 34 flash turn on 30sec repeats ...


The self-diagnostic function of the projection television will cause the STANDBY light to blink or flash when the television detects an issue. The number of times the STANDBY light flashes corresponds to a specific issue, some of which you may be able to resolve without the need for service.
  • If the STANDBY light flashes three times in sequence, the lamp cover is not securely attached. Reattach the lamp cover to resolve this issue.
  • If the STANDBY light flashes four times in sequence, the television may be overheating. To resolve this issue, ensure that the back of the television is well ventilated.
NOTE: If the television will not turn on immediately after being turned off, wait for the fan to finish its cycle, then attempt to turn it on again. This is part of the cooling process of some projection televisions and is normal operation.
If the flash sequence is not listed above, or the light continues to flash after troubleshooting the indicated issue, follow the steps below to perform a power reset on the television:

  1. Turn off the television. IMPORTANT: For a projection television that uses an internal lamp, wait 5 minutes after turning off the television to allow the lamp to cool before continuing with the following steps.
  2. Unplug the television power cord from the electrical outlet.
  3. Let the television remain without power for 60 seconds.
  4. Plug the power cord back into the electrical outlet. NOTE: If the television is plugged into a power strip or surge protector, remove it from the power strip or surge protector and plug it directly into the wall outlet. If the issue is resolved, the problem is with the power strip or surge protector and not the television.
  5. Turn on the television.

If the issue is still unresolved after following all of the troubleshooting steps, service may be required. Please note the number of times the STANDBY light flashes and relay that information to the service center.

lno2()

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KDF-50a12U Powers off then standby light blinks 3 times


Please recheck Lamp Cover and make sure it is fixed in its space securely as 3 times red blink shows lamp cover error.
There is small safety switch in TV cabinet under lamp cover that has to be pushed by lamp cover if it is fixed in its position properly. That switch is not being pressed by lamp cover and causing this error.
Thanks.

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1 Answer

KP57WV600 SCREEN TURNS GREEN THEN BLANK


The self-diagnostic function of the projection TV will cause the STANDBY light to blink or flash when the television detects an issue. The number of times the STANDBY light flashes corresponds to a specific issue. As per the two examples below, some of the issues may be resolved without the need for service.
  • If the STANDBY light flashes three times in sequence, the lamp cover is not securely attached. Reattach the lamp cover to resolve this issue.
  • If the STANDBY light flashes four times in sequence, the TV may be overheating. To resolve this issue, ensure that the back of the TV is well ventilated.
If the flash sequence is not listed above or the light continues to flash, follow the steps below to perform a power reset:
  1. Turn off the television. IMPORTANT: For a projection TV that uses an internal lamp, wait 5 minutes after turning off the TV to allow the lamp to cool before continuing with the following steps.
  2. Unplug the TV power cord from the electrical outlet.
  3. Let the TV remain without power for 60 seconds.
  4. Plug the power cord back into the electrical outlet. NOTE: If the TV is plugged into a power strip or surge protector, remove it from the power strip or surge protector and plug it directly into the wall outlet. If the issue is resolved, the problem is with the power strip or surge protector and not the TV.
  5. Turn on the television. NOTE: If the TV does not turn on immediately, the fan may need to finish its cycle. This is part of the cooling process for some projection TVs and is normal operation. After the fan turns off, attempt to turn the TV on again.
If the issue is still unresolved after following all of the troubleshooting steps, service may be required . Please note the number of times the STANDBY light flashes and relay that information to the service center.

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1 Answer

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Thats the error for lamp driver error. Which means the Ballast is most likely defective. You can get the replacement ballast for your model at the following link which comes with installation instructions.
http://servicemanuals.vstore.ca/product_info.php/pName/kdfe42a10-ballast-assembly/cName/sony-parts

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1 Answer

Tv went off while watching a program power standby red light blinks 6 times then pauses then repeats tried unplugging unit waiting a few minutes then replugged same results nothing. can anyone help me ?...


Here's an excerpt from the Sony Manual online. And the link - http://esupport.sony.com/US/perl/webtree.pl?template=EN&mdl=KDF55XS955&content_id=68&category_id=11&problem_id=52

The POWER/STANDBY (red) indicator flashes three times
If your power/standby indicator is flashing in a pattern of three flashes, this may indicates that the lamp cover is not attached securely. Follow the directions in the Operating Manual under changing your lamp that related to closing and securing the Lamp Cover. Ensure that the Lamp Cover Door is securely fastened by tightening each screw.

The POWER/STANDBY (red) indicator flashes continously
If your power/standby indicator is flashing continuously, and the lamp cover has been secured, your TV may be in need of service.

The POWER/STANDBY indicator is lit up green (not flashing)
A sustained green light indicates your TV is on.

The POWER/STANDBY indicator is lit up red (not flashing)
A sustained red light from your power/standby indicator simply indicates that your TV is in standby mode. This shows you that your TV is ready to be turned on with the remote.

Is it the power light and not the lamp light? If the lamp light is flashing then replace the lamp.

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1 Answer

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A 3 flash pattern indicates that either the lamp is not seated correctly or that the lamp door is not latched properly. It can also be a fault with the switches that sense whether the lamp is seated or the door is latched. Try reseating the lamp and relatching the lamp door

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I was told by the repair service to unplug the power cord for about 5min. This resets the internal computer. I think this helps but does not cure the cause. Good luck.

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I have a KDF60XS955. When I power it on, the fan comes on, the standby light flashes green several times, the lamp comes on and the standby light goes to solid green. This lasts for less than 5 seconds then the lamp goes out, followed by ~30 green standby flashes, the lamp coming on with the solid green standby light for about 5 seconds then shuts off the lamp again. I can hear/feel the fan running the enitre time. This cycle continues endlessly. Please help!

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