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MiTAC 3026E Laptop Can't make it on

Discussion in 'Electronic Repair' started by Thaqalain, Aug 20, 2005.

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  1. Thaqalain

    Thaqalain Guest

    Max Rating:11V-2.8A
    S/N:002J1A3773
    R043D
    FCC ID:EJH3026E


    I worked on my laptop by connecting its AC Adapter(Model3026A-ADA)
    through wall outlet.
    AC Input:100-240V,1.0A,50/60Hz
    DC Output:11V-2.8A
    Laptop failed to open,does not shows Power light on its front
    cover.After minutes of connection to Power Socket,I touched cord from
    Adapter to Laptop which became hot,I feel smell of burning not sure
    from where exactl.I checked underside of Laptop where Power Cord
    connected was also warm.
    On Power Cord Cable(showing 10 Wires) to Laptop following is written:
    AWM E101344 STYLE 2464 VW-1 300V 80 Centigrade Space Shuttle
    Its wonder why it failed to make my laptop working as reading above
    shows that it can withstand 80 Celcius.
    Any help/suggestion pls.
    Will I open the adapter to check it's Protection fuse T1A/250V?
    In an effort to take out fuse,I have totally broken fuse glass,it was
    still intact with it's right/left terminals fixed in a metal cap with
    strong soldered legs.I have taken these remains of fuse legs to see If
    I can buy the same and solder it on it's previous pads.
    Can I run laptop without fixing fuse for Adapter?
     
  2. Jack

    Jack Guest

    Sounds like the initial problem is in the laptop, not the power adapter.
    The adapter will not function without a correct fuse.

    JMK
     
  3. Thaqalain

    Thaqalain Guest

    Before I read your post , I have broken fuse to take it out as it was
    strongly soldered to legs of it's protective capping.I don't know why
    chinese designed it like this.For monitors/Tvs we can easily remove it
    and replace it.But for this adapter,it can only be removed in pieces.
     
  4. Thaqalain

    Thaqalain Guest

    Can I run adapter and Laptop without fuse?As I don't think so fuse with
    another protective capping with legs for soldering is available in
    Market.
     
  5. It can be removed in one piece by unsoldering it.
     
  6. No, you cannot run the adapter without the fuse. It will not function.
    It is difficult to solder wires to a fuse. Look for a fuse OF THE
    SAME RATING of the "pigtail" type. These have the wires already
    soldered to the end caps. Then remove the board from the adapter,
    unsolder the broken fuse and solder in the new fuse.
     
  7. Thaqalain

    Thaqalain Guest

    Damage is being already committed,I can do only solder from newly
    purchased gun,not sure how to unsolder if situation require in future.
    An
     
  8. Thaqalain

    Thaqalain Guest

    My foot and palm injured due to glass remains of fuse stuck to skin.
    Can I unsolder the same fuse from a printer adapter and fix it to
    laptop adapter,what should be looked in laptop as a first step?
     
  9. Thaqalain

    Thaqalain Guest

    After opening laptop,I found AA size,3.6V,one Tadiran Lithium
    Inorganic Battery.I need to check this is working or failed.
     
  10. Mike Berger

    Mike Berger Guest

    The fuse from a printer adapter can only be used safely if it
    has the exact same ratings as the one its replacing.
     
  11. Thaqalain

    Thaqalain Guest

    There is no way,I can open Printer Adapter made in Mexico,I don't why
    they designed it to be locked.
    I have used a different monitor fuse and loosely connected it's
    terminals via soldering,but adapter did'nt worked,its dead.
    Right tpye of fuse is not available in Canadian famous electronics
    shops(Future,Circuit City/Radio Shack,Canada Tyre,Wall Mart etc).
     
  12. Mike Berger

    Mike Berger Guest

    That's right, it's not a really common fuse to find in
    stores since it's not replaceable by the average consumer.
    Try a TV service shop, or mail order one.
     
  13. jakdedert

    jakdedert Guest

    Just get the current correct. Almost any 'type' of fuse will work if
    you get it connected. Do I correctly surmise from the above that you
    got a fuse connected, but the adaptor still didn't work?

    In that case you're barking up the wrong tree. Something else is wrong.
    A new fuse is only either going to A) blow again, or; B) not blow, but
    the adaptor won't work, either.

    jak
     
  14. Thaqalain

    Thaqalain Guest

    I feel either fuse was failed or soldering having voids inside.I will
    retouch adapter at coming weekend.
     
  15. Thaqalain

    Thaqalain Guest

    Can I solder normal fuse cap terminals(without wire legs)directly to
    previous solder spots.
     
  16. Mike Berger

    Mike Berger Guest

    Yes, but not easily. The ends are plated, and you won't be able
    to solder to them without filing off some of the plating. Then
    you'll have to be careful that the heat from soldering doesn't
    damage the fuse wire or its own connections to the terminals.
     
  17. Thaqalain

    Thaqalain Guest

    Despite being warned not to use other fuse,I have successfully solderd
    pigtail type fuse 125V-4A taken out from an old TV to old soldered
    spots instead of 250V T1A specified
    But as in past I took out AA size,3.6V,Tadiran Lithium
    Inorganic Battery for atleast 24 hr,it seems that BIOS data is
    disturbed and Laptop showing configuration error due to coprocessor.
    Why this time performance of Adapter is very well as in past the
    adapter in it's original shape has heated supply cord to Laptop.This
    time cord is not hot,its looking miracle.Why adapter running very well
    except one of LED is not lighted?
    Is there any future failure expected?Will I go ahead fixing LAptop
    configuration setting based on this adapter's durability if it favors
    during Laptop life?
     
  18. CJT

    CJT Guest

    fire ... burning ... conflagration ...

    :)
     
  19. Thaqalain

    Thaqalain Guest

    If it is ,chances were likely more in the past when power supply cord
    was heated moments after Adapter connection to Laptop?

    Support your response with technical reasoning.
     
  20. CJT

    CJT Guest

    It's never a good idea to replace a fuse with the wrong size.

    You may have jostled something while working on it, making it appear
    to be ok, but it could fail again, this time with compromised safety
    components.
     
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