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Cheese ECS motherboard

Discussion in 'Electronic Repair' started by root, Apr 24, 2009.

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  1. root

    root Guest

    I recently picked up an ECS A939 motherboard
    for the Athlon 64 FX which had failed for the
    previous owner. The failure was caused when the
    heat sink unit for the Northbridge chipset
    fell off, thereby allowing the chipset to fry.

    I looked at the heat sink and it was glued to
    the chipset with double sided sticky tape. On
    closer examination I saw that there were spring
    arms that should have been attached to the MB
    via two loops soldered on the MB. The problem
    was that when the MB was manufactured one of
    the loops wasn't installed even though there were
    two holes and solder pads for the loop.

    I guess that someone at ECS saw the problem and
    came up with the idea of glueing the heat sink
    which failed in short order.

    Until recently Fry's sold a variety of ECS MBs
    but they seem to have switched over to Biostar (VIA).
     
  2. Baron

    Baron Guest

    root Inscribed thus:
    Double sided adhesive tape is a standard method of securing heatsinks on
    chipsets ! Its cheaper than springs and loops ! In all probability
    the heatsink fell off because it wasn't pressed down firmly when
    assembled.
     
  3. Adrian C

    Adrian C Guest

    Not phase change thermal tape?
     
  4. Eeyore

    Eeyore Guest

    Silver loaded epoxy is infinitely better. DS tape is a JOKE.

    Graham
     
  5. Baron

    Baron Guest

    I agree ! But that is how it came from the factory.
     
  6. Baron

    Baron Guest

    He is talking about the chipset heatsink not the CPU one.
     
  7. Franc Zabkar

    Franc Zabkar Guest

    I've used thermal tapes such as the following. They are impregnated
    with metal foil, are very thin, and bond *very* strongly. However they
    are very expensive.

    http://www.chomerics.com//products/documents/tb72.pdf
    http://www.chomerics.com//products/documents/TB79new.pdf
    http://www.anglia.com/product_guide/heatsinks/426_430.pdf (KOOL-PADS
    KA150-2AC)
    http://www.jaycar.com.au/productView.asp?ID=NM2790

    The Kool-Pads brochure talks about "HI-FLOW 105 'phase change' polymer
    coated aluminium designed to replace grease as a thermal interface".
    It has an adhesive coating. There is also "HI-FLOW 625 film reinforced
    'phase change' material" with an adhesive coating.

    - Franc Zabkar
     
  8. Baron

    Baron Guest

    The Kool-Pads stuff is nice ! I didn't know about the coated foil stuff
    though. The film reinforced material is stuff I've used quite a bit.
    Very easy to cut with scissors to suit any particular shape. Also very
    good at high voltages (400-500) on SMPU.
     
  9. Baron

    Baron Guest

    They are a bit naff ! But I've seen worse. Dare I say "PChips" !
     
  10. Franc Zabkar

    Franc Zabkar Guest

    PCChips and ECS merged in 2005. I believe the pair are now the number
    1 or number 2 motherboard manufacturer.

    You can find ECS and PCChips boards in OEM equipment such as IBM,
    Compaq, HP.

    I'm using an 11 year old PCChips M571 socket 7 board for my Internet
    box and an ECS L7S7A2 Athlon XP 2500 box for multimedia.

    My experience with PCChips and ECS has been mixed. ECS were the only
    company to offer me a motherboard circuit diagram (back in the 386
    days), which from a support point of view was good. However, PCChips
    was involved in the fake cache RAM scam which was very bad. But my
    latest boards have been very reliable, as has my brother's Duron 850
    MHz PCChips board.

    - Franc Zabkar
     
  11. Baron

    Baron Guest

    I didn't know that they had merged.
    Its odd that you mention the M571 board because that was one of the
    worst boards I came across ! I returned a whole case of them because
    of corroded traces on the underside. I'm talking brand new boxed kit.

    The suppliers eventually admitted that there had been "Quality Control
    Issues" during manufacture.

    Based on the corrosion I would have said that the boards were either
    packaged wet or some etchant was still present when they were packed.
    I agree ECS really bent over backwards to please. The trinkets that
    turned up in the packaging were nice as well ! I'm glad that your
    experience has been better than mine was.
     
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