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

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Replaced bulb on sony KDF-42WE655, When power turns on then turns off with 3 flashs of red light continuouis?

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  • Master
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SD Tech,
With your kind permission if I may provide info...
3 times red light blinking shows that lamp cover has not been fixed in its place securely after lamp replacement.
Make sure lamp cover, its the first plastic cover that was removed to replace lamp, is back in its position properly then turn On tv.
This plastic lamp cover engages safety micro switch inside tv cabinet.

Posted on Aug 20, 2010

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  • Sony Master
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This is from the Sony site and pertains to your model:

"Unit is dead, No blinks - Problem in the standby power section. Might check fuse, R607, Q601, IC601, R612 and VDR601 (should show open).

Continuous blink once a second, no pausing - No reply from the jungle IC301 (data bus is busy, shorted to ground, or held high), IK video path is defective.

One blink - not used for the self-diagnosis

Two blinks - B+ over current protection (OCP), unit goes to the standby mode then displays the 2 blink fault. Could be a short in the power supply of any of the circuits.

Three blinks - B+ over voltage protection (OVP), unit goes to the standby mode then displays the 3 blink fault. This is also a problem in the power supply circuit, check T603 and R672.

Four blinks - No vertical Deflection (V STOP), Screen goes to a single horizontal line then the video signal muted. Check IC1509, Q1505

Five blinks - AKB circuit (automatic kine bias), the timer/standby indicator blinks for about 30 seconds then goes to the self-diagnosis function. Something is wrong with the video. Check video out, Q705, 732, 761 and other components on the C board, also check Q218, 219, 220 on the A board. In addition, unit could be in IK blanking, try turning up screen slightly.

Six blinks - No Horizontal (H STOP), no raster, goes to the blinking self-diagnosis function immediately. Check C515 & 516 and the jungle IC, IC206.

Seven blinks - High voltage shutdown. The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits.

Eight blinks - Problem with the audio (AUDIO), unit goes to standby and blinks the self-diagnosis code. Check IC406 audio amp, PS401, and 402. On some projection models of Sony TV sets, this code means that T8005 (flyback transformer), or the associative components in the high voltage circuits are defective on the D board.

Nine blinks - Replace D 6116 and D 6301 on the "G" board, do not resolder as this will fix the problem temporary. Or Panel Module Error or Thermal Error. If it is intermittent 9 blinks, meaning sometimes the TV comes on and other times you get flashing, then change the switching regulator on the "G" board or check connections. Make sure the regulator is -12 or -13 (negitive).
Ten blinks - Check Q8014 and Q8013 for shorts, leakage, or bad solder connections on the " D" board. If the transistors are bad, check R8051 and IC8005, also on the "D" board.

Intermittent problems? This is a great feature. You can also bring up these fault codes on-screen to see a list of the problem numbers with the abbreviation of the problem and the number of times this problem has occurred. This is slightly different than entering the service mode. To see the diagnostic screen, press the following buttons: Display, Channel, 5, volume Minus, ( not plus ) then Power. This brings up a screen with a list of the problems and number of times they have occurred. Each of the problems named, are abbreviated as, "OCP", "OVP", "V STOP", ETC. We have repeated them in parentheses in the text for the "Blinks" described above so you can correlate between the diagnostic screen and the blink codes.

Now that you know about these self-diagnostics, how do you use them? Say that you have a set with a black screen. You see that the LED is blinking four times. This would tell you that you have no vertical sweep, which is why the video is muted. If it was blinking 6 times, you would know that you have a horizontal fault. It's not a sure cure.. "


Read it carefully as it may point you in the direction of your problem.

let me know with a comment here if you have questions--I am here to help you.

If this information told you something you did not know, rate this solution as very helpful as I do this here for free.


SD TECH

Posted on Aug 19, 2010

  • SD Tech
    SD Tech Aug 21, 2010

    JEE: GOT THE ERROR CODES FROM THE SONY SITE. I KNOW ABOUT THE DOOR PROBLEM AND IF the asker wants to he can remove the front grill---set unplugged and the door to examine it. The plastic peg on the back of the door engages the safety switch and if warped by heat from the lamp, the switch does not get engaged.

    Look at the door from the side and if warped what I do is take something not metal---wood match stick or plastic shaft and engage the lever---Plug set in and see if it comes on--DO NOT LOOK AT LAMP IF SET COMES ON AND SHUT SET OFF. YOU DO NOT WANT TO OPERATE THE SET WITH DOOR REMOVED OR BYPASS SWITCH LONG TERM. IF OUTER SHIELD THAT COVERS DOOR IS PUT BACK WITH DOOR MISSING, IT CAN ALSO BE MELTED.


    I AM AWARE OF THE BLINK CODE FOR THE DOOR PROBLEM BUT A QUICK SEARCH HERE SHOWED THE ERROR CODES I LISTED.


    IF EITHER ASKER OR YOU HAVE COMMENTS I WELCOME THEM AND YOUR HELP.


    SD TECH

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Power light once, then power and OPC twice simultaneously. what would that be?


Hey Vince, not sure of your model, but this may help. Last year, my older Sony started acting up. I would hit the power button and the red light would flash, fan would come on, no picture and then would power down. I bought a replacement bulb from Amazon and that solved it! Still using it today! Hope this helps! http://www.amazon.com/KDF-42WE655-KDF-50WE655-KDF-60XBR950-KDF-70XBR950-KDF-60X8R950/dp/B003ISY34U/ref=sr_1_2?ie=UTF8&qid=1386773313&sr=8-2&keywords=Sony+replacement+bulb&tag=donations09-20

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did you all ready close the access panel that needs to be closed to turn on ( if you have not ) the other problem you may have could be the reset lamp timer here is the link

http://www.agoraquest.com/viewtopic.php?topic=31733&forum=70&keyword2=electronics

now if both of the things above are ok then you might have a problem with your ballast board this is the power source to the lamp if for any reason this board is getting to weak it will not turn on a brand new lamp

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The tv Sony kdf-42we655 will not turn on, the light will flash green and make a humming sound but thats it, the light below that labeled "lamp" flashes red? Why is the tv not working properly and why is...


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Kdt-42we655 red/standby power switch flashes 3 times at a repeat, after tv is turned on just replaced bulb after last on burned out causeing small amount of damage due to clugged fans


Your lamp door is not secure. You may need to replaced the door if it warped. PN: X-2048-503-3. Also, you need to address the clogged lamp fan, it should be replaced. PN: 1-787-460-11.

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Tv will shut off and red light will flash 3 times


If its Sony KDF-42WE655 TV that goes to standby and LED blinks 3 times then check Lamp Door that seems not fixed properly.
That happens when lamp replaced in TV.
If its different model number TV, let me know exact model number.

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1 Answer

Wont power on


The blinking red light means that the projection bulb ($150+/- online) needs to be replaced. The access door is located lower right side and replacing is staight forward. Sony has a problem with the Grand Wega that it is denying resposablity for. Check it out by Googling "MSNBC problems with Sony Grand Wega". I would like to get a class action suit going.

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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) Confi rm KD-board is securely seated on the G2-board
3) Replace KD-board

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2 Answers

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It may be your bulb.  We just had to replace ours after 4yrs.

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you need to buy a bulb for the tv its about 179.00 on ebay

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