Emerson LF501EM5F, power button will only turn TV off, remote on/off OK FIXED

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • DXseekerMO
    Badcaps Legend
    • Feb 2018
    • 1119
    • US
    #1

    Emerson LF501EM5F, power button will only turn TV off, remote on/off OK FIXED

    Emerson LF501EM5F

    Complaint: Power button on back unresponsive when TV is off
    Remote turns TV on and off
    Once TV is ON, power button responds and turns set off.

    Attributes: Voltage drop upon power button activation present at pin 128 of IC3101 number MSD8220LB1-S1 and was 3.29V high and 0V low. An open source datasheet for this IC could not be found

    Repair applied: Replace main board. Successful replacement of IC3101 would have achieved the same result.

    Further notes: The used main board on-hand had SMD CAP C3214 shorted resulting in a power supply chirp. Replacement of C3214 resolved the problem and restored the board to full operation.
    Last edited by DXseekerMO; 11-27-2018, 03:11 PM.
    They call me......."threadkiller"
    Tags: None
    • nomoresonys
      Badcaps Legend
      • Jan 2013
      • 12206
      • U.S.
      #2
      Re: Emerson LF501EM5F, power button will only turn TV off, remote on/off OK FIXED

      Nice work, thanks for sharing.

        Comment

        • budm
          Badcaps Legend
          • Feb 2010
          • 40746
          • USA
          #3
          Re: Emerson LF501EM5F, power button will only turn TV off, remote on/off OK FIXED

          Another shorted out C3214, very common on these Philips/Emerson main board.
          Great job finding the problem.
          Never stop learning
          Basic LCD TV and Monitor troubleshooting guides.
          http://www.badcaps.net/forum/showthr...956#post305956

          Voltage Regulator (LDO) testing:
          http://www.badcaps.net/forum/showthr...999#post300999

          Inverter testing using old CFL:
          http://www.badcaps.net/forum/showthr...er+testing+cfl

          Tear down pictures : Hit the ">" Show Albums and stories" on the left side
          http://s807.photobucket.com/user/budm/library/

          TV Factory reset codes listing:
          http://www.badcaps.net/forum/showthread.php?t=24809

            Comment

            • DXseekerMO
              Badcaps Legend
              • Feb 2018
              • 1119
              • US
              #4
              Re: Emerson LF501EM5F, power button will only turn TV off, remote on/off OK FIXED

              Thanks budm, unfortunately the main board I installed from my stock died shortly after. The TV turns on, no splash screen and turns off. Also turns on by itself upon plug-in.
              They call me......."threadkiller"

                Comment

                Previous template Next

                Related Topics

                Collapse
                • cstout
                  DeLonghi AC Remote only accepts 3V
                  by cstout
                  Hello all, I've been looking into this portable air conditioner's remote control and can't find what could be causing the problem - or possibly this remote is just terribly designed.

                  The remote only works at exactly 3V - if I drop it any lower, using my bench power supply, to say, 2.9V then the remote will not flash the display and turn off. I don't have any AAA batteries that are exactly 1.5V each so I'm not sure if this remote is designed this way - to only use the freshest possible batteries, or if there's a failed component in the mix.

                  I can't find any schematics...
                  06-03-2024, 03:53 PM
                • Mc_Millian
                  Toshiba 50lf711u20 fire tv remote not pairing
                  by Mc_Millian
                  Hello everyone,

                  I was wondering if anyone could help my in pairing a remote with a Toshiba fire tv?
                  The Tv model number is: 50lf711u20 Rev B.


                  I've already replaced all the the circuit boards within the tv along with the I.R. sensor receiver.

                  I've tried 3 different remotes which should be fully compatible with this TV.


                  Oddly enough. A few if the buttons on all of the remotes actually work. Even without pairing...which makes no sense.

                  The power button, along with the volume,back,select, and directional...
                  04-07-2022, 12:15 PM
                • edugimeno
                  HiSense 55A7500F won't obbey to remote after power on
                  by edugimeno
                  Hi! I have this TV set that does the following:
                  1) I press the red power button on the remote
                  2) The TV turns on normally
                  3) After that it won't take any other command from the remote, neither power off, volume, channel, NOTHING
                  4) We need to either pull the main cable or use the built in button at the bottom to select funcion OFF

                  Then after it's off, it would again accept the TURN ON from the remote and same again

                  BUT:
                  -The remote does show the correct IR beam while observed thru a phone camera
                  -The TV works fine while using the MiRemote...
                  03-14-2023, 11:22 AM
                • rustinjust
                  Please help, where can I get a remote for my subwoofer?
                  by rustinjust
                  I’ve got a subwoofer that I’ve had for nearly 20 years, it did come with a basic remote which I’ve lost. It’s a generic make of subwoofer, I can’t see a brand sticker on it. It comes with 2 speakers.

                  Question recently I’ve connected it up to my tv which has greatly improved the sound on my tv, however I’d like to be able to mute the subwoofer when ads come on or just mute it when the phone rings etc. I tried using a cheap all in one tv remote on the subwoofer and the volume button would only work to increase volume but not turn it down or mute it

                  Is there...
                  10-28-2023, 03:43 AM
                • jesterace
                  Samsung B2030HD IR Remote Receiver Dead, shorted micom?
                  by jesterace
                  Hi,
                  I have this TV a small 20 inch that works perfectly except for the IR has stopped. I have confirmed that the remote control is fine and tried an alternative and even tried with IR blaster from phone. Remote 100% ok.

                  Tried installing latest firmware but no change.

                  TV won't respond to remote at all, not even to bring it out of standby. I have to use the touch sensitive front panel to operate, at which point TV is usable albeit with no remote.

                  Tried replacing the IR receiver diode/bulb on front panel and no change so put the old one back. After tracing...
                  10-26-2022, 02:20 AM
                • Loading...
                • No more items.
                Working...