Question about Proview PL913S 19" Flat Panel LCD Monitor

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Popped IC inside power supply board, what is it?

I can see a small 8 pin Surface mount IC, I think it is an N-FET but I cant look up the number on it for a replacement. the numbers on it are 4606 (maybe date code) and under that is BD5B2R. this thing is tiny so the B might be an 8 and the D might be an 0. The P/S has 4 of these and it has 4 CCFL. One ends in Z. Any idea what they are or where I can look up the number? the manufacturer symbol looks like an A with a circle around it and the right leg of the A goes down through the circle, almost like a 4 with a circle around it. I have been looking for days on the internet for anything that resembles it and found this from TI, UCC3837. Looks just like it. These monitors are the same fron SONY and viewsonic. Thanks for any help.

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  • Steven Wander
    Steven Wander Apr 08, 2008

    Mark, You da MAN! If this is the critter I need, Ill be stoked! What part of my sad description led you to this particular chip? So its P-FET, are they somewhat generic or is their a cross reference to my particular burned chip?



    Pter....I know they are small, but I know a guy....thatll do it for me, solder wick the existing solder off, put some water soluable paste on across the pads and lay the chip on, put in a toaster oven preheat board at 200 for 4 minutes, heat up to 325 for 2 minutes and then 450 for 30 seconds or until the solder beads up on the pads. then turn off oven and let cool. The solder beads up on the pads while leaving the untraced board, its really cool. You can solder a whole line of microtraces wiht one long bead that seperates onto the pads by itself. he turned me onto this from this website. http://www.seattlerobotics.org/encoder/2...

  • Steven Wander
    Steven Wander Apr 08, 2008

    Mark, this is actually what I needed, but you sure pointed me in the right direction

    http://pdf1.alldatasheet.com/datasheet-p...



    4606

    built 12/05



    now to find a seller that wants to sell 1. thanks again FIXYA!

  • B Joan Rapier
    B Joan Rapier May 11, 2010

    Good grief! One of the words in the last line in the 1st paragraph of my post got censored by Fixya. The words following "..., solder wick (or s-u-c-k-e-r)..." OK, now let's see if the censor flags that version as well. :O




  • B Joan Rapier
    B Joan Rapier May 11, 2010

    Hi pishta68,



    Do you know how to solder a surface mount IC on a board? Is it a "flat pac" (leads fanning out the sides)? If so, it can be really sticky business installing one of these critters. I'm certified in micro-miniature board repair and I can attest, even for a pro, it's a feat to do it properly. Then there's the issue of having the proper equipment (soldering gun lead tips, heat sink clips, solder wick (or ******), etc.)



    Most often, component-level repair is not done anymore. Instead, devices and equipment are repaired by replacing sub-assemblies that have failed.



    Is there any chance you can R&R (remove and replace) the board instead?



    ***************
    Please, post back w/ your answers

    and any other info. you can provide

    (the more details you can provide the

    better) and we'll see if we can get this

    issue resolved or at least diagnosed

    for you.



    Thank you
    BJ
    ***************

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Nice job Mark_Webber...!

BJ

Posted on Apr 09, 2008

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  • 472 Answers

What you are after is an AO4411
It can be found at http://pdf1.alldatasheet.com/datasheet-pdf/view/136100/AOSMD/AO4411.html

That should get you through the day =)

Posted on Apr 08, 2008

  • Peter Thompson
    Peter Thompson Apr 09, 2008

    Ah all in a days work =)

    I use the hot air de-soldering/rework station myself, though that is not for the inexperienced. These are basicaly like the heat guns you use to strip paint, but in a more usable form.

    You can for the record use a heat gun, on the low setting.. But I cannot advise enough how hot these get, how dangerous they can be, and last but not least how important having old circuit boards to practice on.

    DO NOT USE ANYWHERE CHILDREN CAN GET AT THEM. IT WILL REMAIN EXTREMELY HOT FOR A LONG TIME AFTER IT IS OFF AND WILL GOTO 3RD DEGREE BURNS IN A SPLIT SECOND.



    For the desktop model I use....

    Type hot air desoldering station into your favorite search engine.

    These are not the cheapest tool to have, but they save alot of time and mess.

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