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Emerson PL-P42W-10A red light, no sb

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    #1

    Emerson PL-P42W-10A red light, no sb

    Emerson PL-P42W-10A , ps # BN44-00273C PSPF321501A
    no power on , just red light flash, and click. notice the browning around the 4 resistors left top on front , right top on back of board they are 100k and read 99. ohm , help!
    Attached Files
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    #2
    Re: Emerson PL-P42W-10A red light, no sb

    Do have 5v sb

    Comment

      #3
      Re: Emerson PL-P42W-10A red light, no sb

      Originally posted by mcross View Post
      right top on back of board they are 100k and read 99. ohm , help!
      1) I can't tell the color code, but please list it.

      2) If you suspect the resistors are bad, desolder them and re-measure them out of circuit to verify. In circuit readings can be deceptive with other surrounding components and if the resistors are in parallel or series.

      3) Do you have a manual or auto ranging multimeter?
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        #4
        Re: Emerson PL-P42W-10A red light, no sb

        brown
        black
        yellow
        gold
        = 100k ?

        will remove all 4 and test now

        Comment

          #5
          Re: Emerson PL-P42W-10A red light, no sb

          manual meter

          Comment

            #6
            Re: Emerson PL-P42W-10A red light, no sb

            1 reads 99.1
            1 reads 98.7
            1 reads 99.2
            1 reads 99.0

            Comment

              #7
              Re: Emerson PL-P42W-10A red light, no sb

              Originally posted by mcross View Post
              1 reads 99.1
              1 reads 98.7
              1 reads 99.2
              1 reads 99.0
              Wow, if the correct value is 100K Ohms and you are getting 99 Ohms for each reading, that is way off.

              I'm not suggesting you are making a mistake, but we have a lot of new multimeter users in the last 72 hours, what is the scale setting when you are taking these readings? 200? 2000? 20k, 200k?
              Last edited by retiredcaps; 11-28-2011, 10:03 PM.
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                #8
                Re: Emerson PL-P42W-10A red light, no sb

                200k

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                  #9
                  Re: Emerson PL-P42W-10A red light, no sb

                  Those readings are fine.

                  They probably just discharge the high voltage capacitor so it's safe to work on.

                  Have you checked you are getting the right PSU voltages?
                  Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                  For service manual, schematic, boardview (board view), datasheet, cad - use our search.

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                    #10
                    Re: Emerson PL-P42W-10A red light, no sb

                    Have checked the sb, its 3v as it states, can't get any others without it running, right?

                    Comment

                      #11
                      Re: Emerson PL-P42W-10A red light, no sb

                      sorry sb is 5.3v no other power present

                      Comment

                        #12
                        Re: Emerson PL-P42W-10A red light, no sb

                        I get 15.3 v on both outputs to boards on left and right until it clicks off. also with both disconected , same thing , ps clicks, have the volts 5-8 sec later nothing . pic of whole tv back attached
                        Thanks
                        Attached Files

                        Comment

                          #13
                          Re: Emerson PL-P42W-10A red light, no sb

                          It's essentially a Samsung TV but with the Emerson name on it. Never seen that before. And that must be the smallest main board I've seen yet. Suppose that's why they are budget TVs.

                          You should also measure ~200V on the Vs connector. Do you get this?
                          Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                          For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                          Comment

                            #14
                            Re: Emerson PL-P42W-10A red light, no sb

                            there are 2 and no i don't get any reading there

                            Comment

                              #15
                              Re: Emerson PL-P42W-10A red light, no sb

                              Originally posted by tom66 View Post
                              It's essentially a Samsung TV but with the Emerson name on it. Never seen that before. And that must be the smallest main board I've seen yet. Suppose that's why they are budget TVs.

                              You should also measure ~200V on the Vs connector. Do you get this?
                              That is the rule rather than the exception. Samsung builds the plasma panel, which includes the buffers, sustains, and main control board. The TV manufacturer adds the video / input board, speakers, control panel, and the plastic case.

                              PlainBill
                              For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

                              Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.

                              Comment

                                #16
                                Re: Emerson PL-P42W-10A red light, no sb

                                I get no vc , but have sb of 5.3v for about 10 sec.

                                Comment

                                  #17
                                  Re: Emerson PL-P42W-10A red light, no sb

                                  Originally posted by PlainBill View Post
                                  That is the rule rather than the exception. Samsung builds the plasma panel, which includes the buffers, sustains, and main control board. The TV manufacturer adds the video / input board, speakers, control panel, and the plastic case.

                                  PlainBill
                                  This one is wholly Samsung, though - power supply and main board. Look at the LeadFree logo that you only see on Samsung boards. The remote control also looks the same as one from a Samsung plasma I fixed.
                                  Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                                  For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                                  Comment

                                    #18
                                    Re: Emerson PL-P42W-10A red light, no sb

                                    Originally posted by mcross View Post
                                    200k
                                    k means you are on the kilo scale (x1000). So 99.1 x 1000 = 99,100 so your resistor is good.

                                    A 99 Ohm resistor on the 200k scale would show 0.099. That is, 0.099 x 1000 = 99 Ohm.
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                                      #19
                                      Re: Emerson PL-P42W-10A red light, no sb

                                      ok, any thing else i should look for?

                                      Comment

                                        #20
                                        Re: Emerson PL-P42W-10A red light, no sb

                                        did anyone ever figure this out I have the same problem with mine?

                                        Comment

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