Announcement

Collapse
No announcement yet.

Need A6351 I.C.

Collapse
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
    #1

    Need A6351 I.C.

    Am having trouble finding an A6351 chip to replace the fried one in the 5VSB circuit of my ATX-300-12Z power supply. Have read previous discussions about this chip here but haven't seen mention of a source for them. Thanks.
    Tags: None
    #2
    Re: Need A6351 I.C.

    Originally posted by surfwatcher View Post
    Am having trouble finding an A6351 chip to replace the fried one in the 5VSB circuit of my ATX-300-12Z power supply.
    http://www.findchips.com/

    finds one vendor with no stock, but give them a call to see if they can special order.
    Last edited by retiredcaps; 09-04-2010, 06:05 PM.
    --- 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

      #3
      Re: Need A6351 I.C. for Bestec ATX-300-12Z

      Chip is out of production. A couple of options-

      1) buy a better newer PSU
      2) buy a new 300 on ebay ($25 and up)
      3) hope Everell catches this thread and has a spare from one of his "experiments"
      4) Ask in the "Wanted" section for either the PSU or the chip. There may be a few hanging about under somebody's workbench...

      Always try to give as much info in the thread and first post. A "chip hunter" may get passed-by, but a Bestec PSU hunter may grab more attention.

      Welcome to the Forums!
      Toast

      EDIT: Would you please update your location in your profile. Hate to go digging up something for you only to find you're in Europe and shipping is OMG!
      Last edited by Toasty; 09-04-2010, 11:24 PM.
      veritas odium parit

      Comment

        #4
        Re: Need A6351 I.C.

        EDIT 2: Did you figure out what killed it to begin with? If so, what?
        veritas odium parit

        Comment

          #5
          Re: Need A6351 I.C.

          Welcome to the forum, surfwatcher. It would be helpful to know your location. Are you in the USA, or Europe, or Asia? This is a worldwide forum.

          At the moment I don't have a dead Bestec to rob parts from. Once repaired they are (in my opinion) a great power supply and works well.

          My suggestion: stop by some computer repair shops and ask for a dead Bestec power supply. The woods are full of them! Most people don't like them - so that is to your advantage. The Bestec ATX-250 12Z and ATX-300 12Z, as well as some of the other ATX-300 models all have that chip.

          Bestec puts glue on some of the parts. The glue is yellowish, brownish, or black, depending on how much heat abuse. Get a very small screwdriver and remove ALL of it because it causes shorts and resistive paths between parts (this may be why it failed). AND replace all bulging capacitors.

          I am currently working on a "throw away" Bestec ATX-250 12Z. I am modifying it to put active PFC in it. So far I have removed the mains capacitors and replaced them with the new main cap. I have wound and installed the booster coil. And I have installed the large filter cap across the bridge diode. Now I am ready to do some "cut and paste" on the circuit traces. Once I get the "big" parts installed and wired in, I will build a small breadboard for the CS1500 APFC chip. You will find numerous little projects on this forum you can do using a Bestec.
          Old proverb say.........If you shoot at nothing, you will hit nothing (George Henry 10-14-11)

          Comment

            #6
            Re: Need A6351 I.C.

            Thanks for the input and suggestions. Will take everell's advice and try to pick up an unwanted Bestec from a repair shop.

            Comment

            Previous template Next
            Working...
            X