17" mitsubishi lcd inverter problem???

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • byteexp
    Member
    • Oct 2006
    • 10

    #1

    17" mitsubishi lcd inverter problem???

    power led good, stand by after a few seconds and led turns amber but if i move the mouse it turns to green again which means that the lcd is good and the culprit maybe the inverter ckt or the ccfl.

    can i use ccfl bulb from another monitor of different model to test it is working, how will i know the working V of the bulb.

    here's some pic of the inverter ckt.


    no bulging caps

    another broken 17" lcd
    burn in power supply area, probably the switching transistor and an ic underneath



    can i modify or make a DIY substitute power supply for this one? thanks
  • FIXITNOW
    Senior Member
    • Jun 2008
    • 128
    • UK

    #2
    Re: 17" mitsubishi lcd inverter problem???

    model number ?

    Comment

    Related Topics

    Collapse

    • ttmi100x
      HANNSG Hi221 -- 2 secs to black feat. CCFL flicker & "burn" marks on power board
      by ttmi100x
      Greetings everyone,


      I have a HANNSG Hi221 monitor that exhibits two seconds to black issues (backlight goes off, display is still on as confirmed by shining a flashlight on it) with some additional oddities...


      The monitor failed on me with a standard "2 seconds to black" some time ago prompting me to initially replace most of the electrolytic capacitors (some of them were bulging/leaking).
      Things kinda sorta worked for a night, then the problem returned along with some flickering and "buzzing" noises.

      Upon closer inspection...
      07-31-2024, 06:36 PM
    • repair-it
      TOSHIBA DLP 52HM95 How to reset timer module on bulb
      by repair-it
      I replaced the bulb only on my Toshiba DLP The bulb is a TB-25. This is the first time I've done a bulb only replacement. Supposedly there is a timer module that needs to be re-calibrated or reset. I don't know where the module is located. I see some vendors selling the bulb with the housing stating module included which leads me to think the module is located inside the enclosure the bulb mounts in, but I didn't see it. Maybe it's inside the plug attached to the bulb?

      Anyway - I am seeking information on how to reset this so called module so that the lamp will operate. Apparently...
      10-11-2023, 07:18 PM
    • 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
    • x_orange90_x
      Vizio E55-E1 bad backlights or bad inverter?
      by x_orange90_x
      I just got this tv today and it appeared to have no backlight on. After taking off the rear cover and checking again in the dark I can see that MAYBE one quadrant is lit.. But still it's quite dim. I was going to check the LEDs with my tester, and I found LED 1 and LED 2 + pins on the wire from the inverter, but I couldn't identify a ground. Nonetheless I tried using a mounting screw on the inverter board and also the chassis as ground but regardless my tester reads 300 which is what it reads when there is no voltage draw.

      I don't know how exactly to test the inverter itself. Is it...
      01-29-2025, 09:24 PM
    • Gentian
      APSINT3636VR 3600W APS INT Series 36V DC 230V AC Inverter/Charger schematic
      by Gentian
      I have a tripp-lite aspint 3636vr inverter charger which blow some of mosfet transistors. I replaced them repaired also the driver circuit and tested but the mosfets burn again.

      It work very well as inverter and also as charger if I let the rear switch in auto mode (inverter) and charger only(charging) but in auto when I connect the feed line 220V AC first time it pass ok to line and start charging the batteries but when I remove the feed line it pass to inverter mode and if I do it again the second time when passing from charging to inverter the Main transformer start making a...
      03-06-2023, 07:07 AM
    • Loading...
    • No more items.
    Working...