Sharp LC-70le550u back light flashes

Collapse
X
Collapse
 
  • Page of 2
  • Time
  • Show
Clear All
new posts
Previous 1 2 template Next
  • budm
    Badcaps Legend
    • Feb 2010
    • 40746
    • USA
    #21
    Re: Sharp LC-70le550u back light flashes

    Hard to troubleshoot without the pictures of the boards, the labels of the pins on the connectors, and how all the boards are connected together.
    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

      • nwcs
        Badcaps Veteran
        • Dec 2015
        • 311
        • usa
        #22
        Re: Sharp LC-70le550u back light flashes

        Sorry it is getting so long in between posts but this is now my TV so it is a low priority. The V does not light up at all, checked all voltages and I only have 5V at pin 15 and 1.5v at pin 13 of large connector going to the main board. Checked the diodes and I am not sure where to check on the transformers.
        Attached Files
        Last edited by nwcs; 02-15-2016, 02:20 PM.

          Comment

          • nwcs
            Badcaps Veteran
            • Dec 2015
            • 311
            • usa
            #23
            Re: Sharp LC-70le550u back light flashes

            I finally got in a new power supply and main board since both were bad. I still have no video unless I unplug the right side of the tcon board (from back) then I get horizontal lines in the picture and I only got that once while it was on it's face. I do get almost every time briefly lines in the bottom of the right side of the screen with the right tcon ribbon unplugged.
            Attached Files

              Comment

              • nwcs
                Badcaps Veteran
                • Dec 2015
                • 311
                • usa
                #24
                Re: Sharp LC-70le550u back light flashes

                Unplugging the corner cable on the right hand side produced vertical colored lines and nothing if I unplug the left side. Tcon was hooked up when I did this.
                Attached Files

                  Comment

                  • budwich
                    Badcaps Legend
                    • Jul 2015
                    • 3097
                    • Canada
                    #25
                    Re: Sharp LC-70le550u back light flashes

                    :-( I think you have "significant" driver issues.... both horizontal and vertical.

                      Comment

                      • nwcs
                        Badcaps Veteran
                        • Dec 2015
                        • 311
                        • usa
                        #26
                        Re: Sharp LC-70le550u back light flashes

                        I am not sure what you mean. Is this possibly a bad Tcon board?

                          Comment

                          • anthonya661
                            New Member
                            • Apr 2015
                            • 4
                            • usa
                            #27
                            Re: Sharp LC-70le550u back light flashes

                            I also have a sharp lc-60le550u powers up pic comes on then fades away. it was the main board replaced it and it works great now

                              Comment

                              • Vxavier
                                New Member
                                • Jul 2017
                                • 5
                                • United States
                                #28
                                Re: Sharp LC-70le550u back light flashes

                                I have a sharp LC-70LE660U, replaced Tcon board still no image.
                                Reseated cables got image powered down and back up no image and ideas?

                                  Comment

                                  Previous 1 2 template Next

                                  Related Topics

                                  Collapse
                                  • sam_sam_sam
                                    Lift Master Garage Door wall switch display / motion sensor controller display disappeared no back light
                                    by sam_sam_sam
                                    This happened last Saturday and today I finally had time this morning before I went to work to replace two non brand capacitors

                                    I will let you be the judge weather or not these are bad or not according to the blue ESR meter that I am using

                                    I am comparing them to a brand new one that I installed

                                    The display came back on and the programming was not lost which I was surprised by I would have thought that when the display went blank that so did the memory as well

                                    I going to let it run for several days before I remount back on the wall next to the...
                                    09-05-2024, 06:48 PM
                                  • esqmooo
                                    HP Elitebook 850 G8 CAPS lock flashes 7 times and charging light always on
                                    by esqmooo
                                    Hi,
                                    I'm facing this issue since this morning. When I try to power it on, the CAPS lock light flashes 7 times (or 6 if not counting the first one when the power button is pressed). The charging light is always on as if the laptop was connected to the charger. The issues started gradually where it would flash the light but after trying multiple time it would power on. I tried to open it and I noticed one coil "1R0 2127" gets hot when the charger is connected. Note: the charging light directly comes on when the battery is connected or the charger is connected.
                                    03-07-2025, 05:55 AM
                                  • PNI E.
                                    tcl u65x9006 back light on but no picture sounf ok after 40 50 secs
                                    by PNI E.
                                    hi guys, i need your help again...i have tcl u65x9006. while i was watching it become darker like when a movie ends, little by little the image disappear. now if i turn on i have back light on, after like 1 min i have also sound but no picuture. the back light is on i take off one at time the ldvs but nothing change always no picture. i tried to cover with a piece of paper the pin of ldvs i cover like 7 8 pins but nothing worked. the tv stay with no picture. there is a tcon board.i checked the voltage there on the fuse i have 11,8 volts. there is caps in shorts on the exit of the tcon i have...
                                    02-20-2025, 08:36 AM
                                  • CraigR
                                    Hp x360 15-u499nr power light flashes continuously.
                                    by CraigR
                                    I have an Hp x360 15-u499nr laptop with a continuous white blinking power light. The laptop does turn on. The light flashes with just the battery and if I disconnect the battery and just use the power cord it still flashes and with both connected it still does. I have updated the bios and tried a hard reset with battery unplugged and power cord unplugged and holding down the power button for 60 seconds. I can't think of what else to try.
                                    09-16-2024, 06:12 PM
                                  • russpall
                                    LG 39ln540v - red light flashes twice, no power to LED driver?
                                    by russpall
                                    Hi there,

                                    I've got a 39" LG 39LN540V that's just spontaneously stopped working! The symptoms are - when I plug it in, the red light will flash on twice, then go out, there's no visible picture, and I couldn't see anything using a torch on the panel either. If I press the power button (either remote or on TV), the red light comes on continuously. If I press power again, the red light flashes twice.

                                    The TV is using a power board EAX64905301. I've attached a diagram of the power output, I've tested the voltages with a multimeter and I'm getting the following:
                                    ...
                                    Pin out and expected voltages
                                    2 Photos
                                    08-27-2024, 01:07 PM
                                  • Loading...
                                  • No more items.
                                  Working...