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The standby lamp flashes 3 times, I tested the access door switch, its ok. What next?

I thought the bulb was bad. replaced still does the same thing. could the ballest be bad? how to test Please.

Posted by Anonymous on


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The switches (there are two of them) can be bypassed but it isn't a fun job. There are 3 connections on the switch boards and if you connect all 3 together, that should bypass the switch. There is one switch on the door and another located on the lamp socket board. You can bypass on the door but there is no way I can describe how complicated it is to get to the one on the lamp socket. So, try jumping the one on the door and see if helps. REMEMBER THAT THE LAMP IN THIS SET CAN CAUSE BURNS, VISION DAMAGE AND OTHER PROBLEMS SO AFTER YOU HAVE JUMPED THE SWITCH, PUT THE DOOR BACK ON AND MAKE SURE YOU HAVE THE CORD UNPLUGGED WHEN YOU WORK ON THE TV.

Posted on Nov 15, 2008


Shahid Electronics

  • 10594 Answers

SOURCE: XL 5200 bulb replace and NO Picture or Sound

3 times blink error code shows Lamp Door is not seated / fixed properly, please recheck it and make sure that door close safety switch is pressed as this switch sends error signal to system control chip.

Posted on May 30, 2009



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SOURCE: KDF-E42A12U - Three Standby flashes???

There is the possibility that you might have a defective ballast, it might not have enough voltage to keep up with your new lamp, and that's why it switches off and makes the 3 indicator lights flash, letting you know that the bulb is defective, but it's not the bulb, it's the ballast

Posted on Jul 14, 2009


  • 381 Answers

SOURCE: sony wega kf-ws60s1 , standy by lamp flashes 6

thermal fuse by lamp is open. replace it.

Posted on Dec 08, 2009


Sonny Berry

  • 8617 Answers

SOURCE: kdf-e50a11e diagnostic codes

3 blinks is indicating the lamp has burned out. Aftermarket lamps tend to fail quickly. Only use oem replacement lamps for your sony. You can get replacement lamps from

Posted on Feb 08, 2012

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The power standby light flashes 3 times. checked the lamp door access switch, is ok what next?

If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magazine" will make surf easy. Pull up older posts. Surf the site with patience. Do a search by type in the brand name of your device at its search box.
These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. You might have replaced the bulb. But, have checked the ballast? Checked whether ballast board get voltage from the power board? Check these.

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There is the possibility that you might have a defective ballast, it might not have enough voltage to keep up with your new lamp, and that's why it switches off and makes the 3 indicator lights flash, letting you know that the bulb is defective, but it's not the bulb, it's the ballast

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