Announcement

Collapse
No announcement yet.

Missing Component I.D. Needed

Collapse
X
Collapse
 
  • Page of 2
  • Filter
  • Time
  • Show
Clear All
new posts
Previous 1 2 template Next
    #21
    Re: Missing Component I.D. Needed

    It is not common to have those fail, but you should test before you go and place an order. They are common-cathode Schottky rectifiers. They should read as diodes (black to center pin) and not read shorted they other way around.

    The 2, 1/2" square surface mounted items on the underside could be similar devices, or they could be MOSFETs. They don't appear overheated or or otherwise damaged, and testing would mean lifting (desoldering) one of the legs. It is hazardous to do for fear of damaging the item physically. I'd just like you to report the numbers for reference.

    Thanks for the clearer picture!

    Toast
    veritas odium parit

    Comment

      #22
      Re: Missing Component I.D. Needed

      The Schottky's show 275 (DM804) and 148 (DM807) respectively; with red on the center leg the readings will climb to over 1000.
      The surface mounts (QM802 & QM803) on the underside, which took a bit of scrubbing to remove the excess flux, are both D480 with BA8B2N underneath.

      Comment

        #23
        Re: Missing Component I.D. Needed

        Sounds good. I can't locate any info on QM802,3. Those numbers can be a PITA to read even with a magnifier.

        Let's hope that the fuse and MOSFET fix it.

        Toast
        veritas odium parit

        Comment

          #24
          Re: Missing Component I.D. Needed

          The good news is the MOSFET and fuse replacement allowed the set to power up. The bad news is the screen is fractured in several places.
          It really burns me up that some folks must feel they need to deceive others in order to make a buck. What comes around goes around, I always say.
          Time to kick back and have a
          I would like to thank Toasty, PlainBill, and Wizard for their assistance in the repair of the power board of this set as I would more than likely still be
          Thanks guys

          Comment

            #25
            Re: Missing Component I.D. Needed

            Originally posted by Sam I Am
            The bad news is the screen is fractured in several places.
            I'm curious to see what this looks like. Can you post a pic?
            --- begin sig file ---

            If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

            We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

            Please do not post inline and offsite as they slow down the loading of pages.

            --- end sig file ---

            Comment

              #26
              Re: Missing Component I.D. Needed

              OMG!

              It is physically broken? You could not see that before? I'm, to say the least, shocked.
              veritas odium parit

              Comment

                #27
                Re: Missing Component I.D. Needed

                Nope... couldn't tell if the screen was flugged until I gained the ability to power it up. Very frustrating indeed as another screen costs more than the set is worth. At least the rest of the set works even though it's more or less a parts set now, unless I get lucky and run across another one with thrashed innards.
                A pic is attached for those that may be interested.
                Attached Files

                Comment

                  #28
                  Re: Missing Component I.D. Needed

                  Or you could strip the boards and sell them on eBay as 'used, from a TV with a broken screen'.

                  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

                    #29
                    Re: Missing Component I.D. Needed

                    looks like a Wii accident

                    Comment

                    Previous 1 2 template Next
                    Working...
                    X