Question about Sony Grand WEGA KDF-42WE655 42" Rear Projection 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?
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?
Posted on Mar 22, 2008
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
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
Tips for a great answer:
If your Sony Wega will not turn on, the front green light blinks, you hear a faint whirring sound and the green light turns red and flashes, it probably means the lamp inside the set is no longer working. If you noticed the screen beginning to dim in the preceding days or weeks, this most likely is the cause.
If the green light flashes and the picture comes on momentarily but then goes off, and the green button flashes until the set restarts, then the seal around the lamp mount is loose and needs to be refitted.
If the picture on your Grand Wega cuts in and out and the green standby light flashes, both of the set's STKs need to be replaced. STKs are small chips on your television's circuit boards and are identifiable by their labels. The specific STKs used in your Grand Wega TV will be identifiable by the numbered labels on top of the STKs.
When you plug in your Sony Wega and hear a loud popping sound, it's probably caused by a defect in the high-voltage circuit. Let the professionals take care of this one.
If, after turning on your Sony Wega, you can hear your set but the screen is black, you most likely need to replace your projection lamp.
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