kdf50we655 cycling/ not turning on

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Austin420
    Member
    • Apr 2012
    • 34
    • United States

    #1

    kdf50we655 cycling/ not turning on

    Hey guys,

    Today there was a free 50" Sony projection on my way home. Seeming how I already ripped into one of these and fixed it and is now in my living room I decided to try this one. As the title states its a Sony KDF 50WE655.

    When I plug it in I can hear it all cycle on and the fans kick on. I pulled the front off and took out the bulb. Looks like the bulb overheated a lot! I can't tell if the bulb itself is blown, I'm sorry for the low quality pic of it but there is are a few white rings around the base. No cloudy lens or anything. The pictures show the damage.

    There is an excessive amount of dust built up on the inside. It is possible that the exhaust fan over the bulb is so clogged that it doesn't work and that is causing the bulb to not turn on?

    When I turn all of the lights off in the room and I try to turn it on there doesn't appear to be any light emitting. Is there any way to test the bulb to see if it is not working? I can't really tell if the ballast is firing in order to turn the bulb on either. But when I leave the TV and just try to turn it on in cycles a few times then the "lamp" led on the front blinks.

    Any help is appreciated, thanks members!

    1) Bulb
    2) Lamp door top broke off and had to pull out burnt plastic
    3) Right side of lamp housing
    4) Top left of lamp housing
    Attached Files
    Last edited by Austin420; 06-11-2012, 08:48 PM.
  • Austin420
    Member
    • Apr 2012
    • 34
    • United States

    #2
    Re: kdf50we655 cycling/ not turning on

    Bump for any possible suggestions?

    Comment

    Related Topics

    Collapse

    • high-tech
      Samsung UN55F7050AFXZA ver. TD01 power cycling
      by high-tech
      Hello everybody, I could use some help on this one... It's got me guessing...
      I took pictures of all the boards and the pin out of the connector on the power supply that goes to the main board... I measured all the pins in relation to chassis ground, here are the result.

      (B13v)1. 12.7 volts cycling (Vamp) 2. 12.7 volts cycling
      (B13v)3. 12.7 volts cycling (PWM5) 4. 1.0 volts cycling
      (OD_LE)5. 2.8 volts cycling (PWM4) 6. 0.9 volts cycling
      (OD_ON)7. 2.8 volts cycling (PWM3) 8. 0.9 volts cycling
      9. ground (PWM2) 10. 0.9 volts cycling...
      09-15-2020, 03:39 PM
    • MrBrick
      Samsung UE55RU8000 power cycling (turning on and off)
      by MrBrick
      I've owned this tv for 3 years when all of a sudden it started power cycling - with no apparent cause. It's not in warranty.

      I know this appears to be a fairly common issue, but would appreciate some guidance as I have no idea what i'm doing.

      I have taken the back off and when either of the two ribbons connected to the main board are disconnected, no image other than the back light appears on the screen, but the sounds runs. This happens with both ribbons and when they are both in place, the power cycling starts again.

      Is there any recommendations on...
      10-23-2023, 07:59 AM
    • ezenia
      LUMIMAN Smart Bulb IC ID?
      by ezenia
      Hi,

      I have a LUMIMAN Smart Bulb that suddenly stopped lighting one day. The bulb is still detected in the app, but won't light. I've probed around and nothing seems to look off with any of the diodes, caps or resistors. The Bluetooth/Wi-Fi module seems to be working as it's still detected in the app. I even tried deleting and re-pairing the bulb (it didn't light, but I was still able to follow the pairing instructions), it re-paired fine, but still no light.

      In diode mode, the LEDs all light up when probed so I'm guessing this means the LEDs themselves are OK. I was expecting...
      04-28-2025, 05:56 PM
    • sam_sam_sam
      High Pressure Sodium Yard light when air conditioner turns light momentarily turns of
      by sam_sam_sam
      I have had these 70 watt high pressure sodium yard lights for many years now probably at least 15 years or more and there is a protection diode that after several years starts to go bad and when it does this it has momentarily shutting down the light and then a few minutes later it starts working again

      This about the forth time I have fixed this one and you can tell if it the diode or not if it lights up and it only shuts down when the air conditioner turns on then it is the diode

      If it cycling on and off constantly then it is the bulb itself that is the issue
      ...
      06-03-2023, 05:24 PM
    • sew333
      Light bulb flicker when turning on after long time off.
      by sew333
      Hello. I have question. I dont know if i have faulty wiring,bad installation or its bulb. When i have lights off long time and turn on lightning ( bulb halogen ) , there is a for 2-3 second bulb dimm/flicker and its normal. Happens only when lightning is off long time and i turn on.

      When i turn off lights and turn on again its fine. That flicker/dimm happens only when lights are off long time.
      That happens for example if i have lights off 2-3 hours and turn on.
      Thx
      02-16-2021, 01:39 PM
    • Loading...
    • No more items.
    Working...