Announcement

Collapse
No announcement yet.

Westinghouse L2410NM 24" LCD power goes on and off, blue light flickers

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Re: Westinghouse L2410NM 24" LCD power goes on and off, blue light flickers

    here's a picture of the power supply board with no caps
    Attached Files

    Comment


      Re: Westinghouse L2410NM 24" LCD power goes on and off, blue light flickers

      i asked the tv shop if i could borrow the service manual and said "NO"

      Comment


        Re: Westinghouse L2410NM 24" LCD power goes on and off, blue light flickers

        Here is a list of the caps on that board - can you amend it to show just the missing ones.
        1 1 P14382-ND CAP ELECT 2200UF 10V FR RADIAL 0.94000 $0.94
        2 2 P12417-ND CAP 680UF 35V ELECT FM RADIAL 0.85000 $1.70
        3 1 P12368-ND CAP 1500UF 16V ELECT FM RADIAL 0.85000 $0.85
        4 2 P14424-ND CAP ELECT 1000UF 25V FR RADIAL 0.91000 $1.82
        5 1 P14413-ND CAP ELECT 100UF 25V FR RADIAL 0.33000 $0.33

        I know where the 2200uf one goes

        EDIT EDIT

        Forget that - they are ALL under the heatsink /Missing

        EDIT EDIT DO NOT USE THAT LIST TO ORDER SOME CAPS ARE TOO TALL
        Last edited by selldoor; 12-16-2012, 03:30 PM.
        Please upload pictures using attachment function when ask for help on the repair
        http://www.badcaps.net/forum/showthread.php?t=39740

        Comment


          Re: Westinghouse L2410NM 24" LCD power goes on and off, blue light flickers

          what value cap is in location c-104
          what value cap is in location c-107
          what value cap is in location c-156
          what value cap is in location c-106
          what value cap is in location c-109
          what value cap is in location c-158

          Comment


            Re: Westinghouse L2410NM 24" LCD power goes on and off, blue light flickers

            cant read the board numbers on your picture
            Please upload pictures using attachment function when ask for help on the repair
            http://www.badcaps.net/forum/showthread.php?t=39740

            Comment


              Re: Westinghouse L2410NM 24" LCD power goes on and off, blue light flickers

              here's a better pic of the board numbers.
              Attached Files

              Comment


                Re: Westinghouse L2410NM 24" LCD power goes on and off, blue light flickers

                You have replaced some?
                I have a theory but it is by no means proven.
                The cap that always fails is the 2200uf which is C104
                The 100uf is going to be the smallest cap so C??? cant see
                but you already have it in there?
                There is a pic somewhere on here showing the 16v 1500uf
                which is at C106

                In the good old days the circles on the board were an indication of the size of the cap so based on that the cap at C106 the one next to it and C107 would be the same size.
                Looking at the sizes available this would suggest that the cap next to C106 and the cap at C107 would be the 680uf

                This leaves the last two circles which are the same size and larger than the 680 of circles so that would where the 1000ufs would go
                Unfortunately that is where the theory now fails as modern caps are different sizes.
                Attached Files
                Please upload pictures using attachment function when ask for help on the repair
                http://www.badcaps.net/forum/showthread.php?t=39740

                Comment


                  Re: Westinghouse L2410NM 24" LCD power goes on and off, blue light flickers

                  thank you selldoor,
                  have all the caps installed,now to replace all the regulators,will postthe end result
                  tomorrow,thanks for everyones help.

                  Comment


                    Re: Westinghouse L2410NM 24" LCD power goes on and off, blue light flickers

                    If there is anybody who knows the correct location of the caps,please post them here so i won't have to guess where they go.thank you

                    Comment


                      Re: Westinghouse L2410NM 24" LCD power goes on and off, blue light flickers

                      C104 -2200@10, C107-1000@25, C156-680@35, C106-1500@16V, C109-1000@25. Can't read C158, if its the one next to the choke and the vertical mounted power resistor, it is 680@35.

                      Comment


                        Re: Westinghouse L2410NM 24" LCD power goes on and off, blue light flickers

                        Well, it's been awhile since i fixed this lcd and now it has started giving me a
                        black 2-3 inch wide band up the far right side of the screen (vertically). After
                        a few minutes it seems to fix itself. Happens on every input.

                        Any ideas?

                        I don't think I changed EVERY cap last time I fixed it.

                        Comment


                          Re: Westinghouse L2410NM 24" LCD power goes on and off, blue light flickers

                          Hello guys,

                          Recently my aging Westinghouse L2410NM 24" LCD started flickering a lot more than before. Flickering is a known issue with these LCDs, some were returned brand new because of that, which hints to design errors. Apart from flickering 5-6 times every 3-4 hours when hot, the monitor is still in perfect shape, so I decided to fix it. Before looking under the hood, here is inventory of what was shared in this thread so far:

                          - bad power supply caps are the likely culprit. Replace them ALL, except the largest 120uF 420V that seldom fails
                          - from another source: the largest cap 120uF 420V is the only one that largely looses capacitance over time and needs replacement
                          - 2 models of power supply boards are interchangeable: APO FP-120A01 and DAC-24M001
                          - when only some caps were replaced, in 6-12 months all caps including the new ones get bulged, and the monitor often needed Inverter board replacement too
                          - power-to-main board cables overheat and the connector may intermittently loose contact under heat from backlight bulbs, and restore it under hand pressure
                          - preferred Cap makes: use name brand low ESR caps like Panasonic FM, FR, or FC series. Nichicon, United Chemicon, and Rubycon have equivalent series parts.


                          Caps List

                          DAC-24M001 Power Board
                          Version 1:
                          1x 10v 2200uF
                          1x 25v 1500uF
                          2x 25v 1000uF
                          2x 35v 680uF
                          1x 25v 100uF
                          1x 420v 120uF (present?)

                          Digikey part numbers:
                          1 1 P14382-ND CAP ELECT 2200UF 10V FR RADIAL 0.94000
                          2 2 P12417-ND CAP 680UF 35V ELECT FM RADIAL 0.85000
                          3 1 P12368-ND CAP 1500UF 16V ELECT FM RADIAL 0.85000
                          4 2 P14424-ND CAP ELECT 1000UF 25V FR RADIAL 0.91000
                          5 1 P14413-ND CAP ELECT 100UF 25V FR RADIAL 0.33000

                          C104 -2200@10, C107-1000@25, C156-680@35, C106-1500@16V, C109-1000@25
                          Can't read C158, if its the one next to the choke and the vertical mounted power resistor, it is 680@35.
                          The cap that always fails is the 10v 2200uf which is C104.

                          ----------------------------------------------------------------------------------------

                          APO FP-120A01 Power Board
                          Version 2:
                          1x 25v 330uF
                          1x 25v 410uF
                          1x 35v 1000uF
                          2x 35v 470uF
                          2x 50v 22uF
                          3x 25v 100uf
                          1x 420v 120uF (seldom suggested to be replaced)

                          Digikey part numbers:
                          100uF 25V use Panasonic FR P14413-ND
                          22uF 50V use Panasonic FR P14452-ND
                          1000uF 35V, use Panasonic FM P12405-ND
                          - power board (under heatsink):
                          P12357-ND instead of P14382-ND
                          P14424-ND (2)
                          P12417-ND (2)
                          P14413-ND
                          P12368-ND
                          - power board (two brown small ones):
                          P14452-ND (2)
                          - power board (one tiny black one):
                          P14411-ND/EEU- FR1E470 (1) 47uF 25V

                          Version 2: (Inverter board)
                          4x 35v 100uF
                          P10294-ND (4)

                          ----------------------------------

                          Before opening the monitor, I've a few questions though:

                          - why after replacing just one largest cap 120uF 420V the LCD said to be fixed "forever", while replacing most or all caps except the largest resulted for several folks here in repeat LCD failure in a few months?
                          - what are main design differences btw different Series of wet caps like Panasonic FM, FR, FC made by the same manufacturer?
                          - my LCD seems to start flickering when slight wind is blowing from a window over its hot vents, even in summer. What physical processes with what components can cause that?
                          Last edited by sambul83; 04-18-2015, 04:15 PM.

                          Comment


                            Re: Westinghouse L2410NM 24" LCD power goes on and off, blue light flickers

                            I hope nobody minds that I'm continuing the tradition of bumping this 10-year-old thread. It just so happens that this thread seems to be the absolute best source of information on repairing the caps for this monitor that the internet has to offer. As such, and because it helped me immensely, I felt that I ought to post here with the following list of parts I just ordered from Digikey:

                            2x
                            P14424-ND
                            EEU-FR1E102
                            CAP ALUM 1000UF 20% 25V RADIAL

                            1x
                            P19719CT-ND
                            EEU-FM1V102B
                            CAP ALUM 1000UF 20% 35V RADIAL

                            2x
                            P19683CT-ND
                            EEU-FC1V471B
                            CAP ALUM 470UF 20% 35V RADIAL

                            2x
                            P12927-ND
                            EEU-FM1H220
                            CAP ALUM 22UF 20% 50V RADIAL

                            3x
                            P15348CT-ND
                            EEU-FR1E101B
                            CAP ALUM 100UF 20% 25V RADIAL

                            I would have preferred all FR-series but wasn't able to find those in stock. This list if for replacing all of the caps on an FP-120A01 power supply board except the big (420V 120uF) one. I was not able to find any part kits for this variant of board or any full replacement parts at the time of this post.

                            As a side note, Westinghouse does not get a lot of respect for their monitors, but the two L2410NM's that I bought have served me well for over 14 years now. Sure, they run hot, have EDID and HDMI issues, refuse to turn on sometimes unless you press all the side keys a bunch, use buzzy old CCFLs, and probably have miserable refresh and latency specs in comparison to modern monitors. But in their defense they do get bright as hell, only had a single pixel die in all these years, connect with all my vintage gear (D-Sub, DVI, 4-pin DIN, RCA, S-Video) and they have stood up to many years of hauling them around in back seats of my vehicles.

                            These days I prefer Samsung and LG and I rock a 49" super ultrawide... but I bought enough caps to do replacements on BOTH my L2410NM's -- although I'll stop at one for now if it fixes the issue. I'm doing it out of respect for the service these monitors provided and just because I've never replaced the caps on anything before and I want to do it for funzies.

                            Comment

                            Working...
                            X