Magnavox (funai) 37MF301B/F7 LCD TV

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • adam2014
    New Member
    • Jul 2014
    • 3
    • usa

    #1

    Magnavox (funai) 37MF301B/F7 LCD TV

    So, we have this 4 month old 37" that goes into protect mode after flashing a white variegated pattern with no form on the left side of the screen for just an instant. I do have standby and temporarily a flashing green light while it performs system check and then back to just standby red led.

    I disconnected the inverter board cables from the smps to the IB and then turned it on and it stays on and there is sound but obviously no picture and no flash light picture.

    So I'm trying get input whether it is the inverter board or tcon or something else. The smps board has no voltage markings on either side of the board for the cold side and just a couple voltages printed on the hot side which test to spec.

    With the inverter board attached and in a dark room I have turned on the set and flash lighted the screen and cannot see any picture. But, it does only turn on for 1-1.5 seconds before entering protect mode.

    Owner is an elderly gent that tossed the receipt and to be honest doesn't remember where he even bought it so returning it is not possible.

    Any input as to the cause(s) or a schematic is appreciated.

    PS-It's also known as an Emerson LC370EM2
  • adam2014
    New Member
    • Jul 2014
    • 3
    • usa

    #2
    Re: Magnavox (funai) 37MF301B/F7 LCD TV

    Turned out to be the flux capacitor for the warp drive.

    Scotty's Engineering sells them for 22 Federation Credits.
    Last edited by adam2014; 07-15-2014, 12:32 PM.

    Comment

    • selldoor
      Slow Learner
      • Dec 2010
      • 7870

      #3
      Re: Magnavox (funai) 37MF301B/F7 LCD TV

      I thought it might be something like that
      Schematics are not usually available for anything so new. Did he pay cash - if credit card that would usually be acceptable
      and he could claim back on credit card I suspect. No paperwork at all gtee form handbook sometime has dealers stamp? Copy check from bank ?.
      What are the numbers of the boards

      Just another thought ring funai you will need make model and serial number explain
      the no receipt old gent plight and see if they can help - they at least should know
      the manufacturing date and you may be able to get it fixed at a service centre.

      In the uk despite the sale of goods act some vendors wash their hands of the problem and just tell you to go to the manufacturers appointed service centre
      though Ive not tried without proof of purchase

      Are you using the remote to control have you tried the buttons on the set

      long shot as you have no pic
      Try these to get service menu and do factory reset
      http://www.factory-reset.com/wiki/Funai_Service_Menu
      Last edited by selldoor; 07-15-2014, 01:44 PM.
      Please upload pictures using attachment function when ask for help on the repair
      http://www.badcaps.net/forum/showthread.php?t=39740

      Comment

      Related Topics

      Collapse

      • flibidy
        Magnum IA.100 Amplifier Switches on, No Output, Possible Input Side fault?
        by flibidy
        I have here a Magnum IA.100 which belongs to my parents.



        The unit powers on & when the relay kicks in, you get a pop from the speakers (this might sound weird but is usual behavior for this amp). However, you get nothing coming through it from any of the inputs & no pops and crackls from any of the controls.


        Because of the sound from the speaker when the amp turns on I have assumed that the output section probably works but I could be wrong & I'm not sure how to test that side of things further.


        What Ive done........
        01-01-2025, 01:26 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
      • kotel studios
        Funai 32FL553P/10 - squealing from PSU, dies after 10 seconds, blank screen after logo, bootloops
        by kotel studios
        Hi,

        Found an Funai 32FL553P/10 TV on sale for cheap listed as broken, so I decided to give a shot at reparing this.

        State I got it in:
        Squealing from the PSU
        After logo I get a blank screen
        After 10 seconds of having a blank display w/ backlight the TV dies
        Give it 7-10ish seconds again and it starts to bootloop.

        What I did so far:
        Replaced all the caps on the PSU (apart from primaries, they were fine and none at hand)
        Checked all voltage rails:
        5VSB - 4.8V
        AMP+13V - 14.4V
        13V - 12.98V (in manual 12V)...
        09-21-2025, 02:00 AM
      • lostone
        Looking for help with a Viewsonic VP230mb where the backlight comes on only momentarily
        by lostone
        Hello, I came here after finding some similar questions asked on other monitors and hope someone here can help me get an ancient Viewsonic VP230mp (23" 4:3 LCD) back to working condition.

        First a little background, I have a background in computer and electrical engineering, and I'm smart enough to know I know nothing about LCD displays and how they work. For this topic I'm as green as they come.
        When the display is turned on the viewsonic logo displays in the uppper left for 2 seconds then the screen goes black, the power LED is green (on) and when a computer is connected...
        05-19-2024, 11:40 AM
      • 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...