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About Soltek 75FRN2-L boards...

Discussion in 'AMD Overclocking' started by ~misfit~, Aug 28, 2006.

  1. ~misfit~

    ~misfit~ Guest

    A couple people asked about these boards here recently, one person looking
    to replace one due to blown caps. Well, just thought I'd mention that I run
    a few of these and I have two 'revisions', E3 and E4. (Silk-screeded by the
    edge of the board near the last two PCI slots) The E3 uses mainly
    purple/dark blue caps made by "GSC" and these are extremely failure-prone,
    especially the five large 3,300uF caps in a row next to the CPU as well as
    three small 1,000uF caps near the RAM slots. The E4 board uses different
    caps (can't discern name but they're black) that don't have anywhere near
    the same problems.

    This is not to say that the E4 is fine. I've had to either slightly raise
    the vcore or lower the clock-speed of these over the last year to keep them
    stable. However, they haven't failed catastrophically like the E3 did. The
    caps on the E4 still look fine whereas the caps I mentioned on the E3 are
    visibly blown and leaking electrolyte. If I can source them I'll replace the
    caps on the E4s as well as the E3s.

    Just FYI. I really like these boards, one of the better Socket A boards that
    were available IMO, and am dissappointed that this problem is showing up in
    boards made as late as 2003. The 'bad caps' problem was well-known around
    the world by then and there's no excuse for them to have been used on new
    boards. Perhaps that's why Soltek no longer exist.

    I just wish I could source some low ESR, 3,300uF, 6.3v, 10mm diameter caps
    in New Zealand. (Or even in the world, at the right price as postage is a
    killer) Preferably a good make such as Rubycon or Nichicon. However it seems
    that the agents here have decided that there isn't a market for them. The
    Nichicon NZ agent told me they didn't have any ex-stock and minimum order
    was 2,000 units with a 90-day turn-around and I'm having similar problems
    everywhere I look. The guy at www.badcaps.com won't ship capacitors outside
    of the US/Canada. Meanwhile I have what is a fast and capable machine
    sitting in parts for want of a handful of caps. I hope that it's not just
    the first of several. :-(

    ~misfit~, Aug 28, 2006
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  2. ~misfit~

    Mercury Guest

    I have an E4 with green caps... running 2.5 years now without any major
    A while back I got a bit panicky when I thought I saw the caps bulging a
    bit. I sent an email to Soltek and they sent me replacement caps (black
    ones). They're sitting in a box in my colset, as the original green caps are
    still doing well.

    (They still seem to be bulging, if you shine a light on them at the right
    angle, and tilt your head, and squint really hard... but in any case,
    they're not getting any worse.)

    No problems with stability, in fact I'm running a 2500+ Barton at 2.2GHz
    (3200+) and I got the thing *undervolted* at 1.5V. I did find out, however,
    that the board for whatever reason doesn't like any BIOS other than 1.7L
    That's what you get for living at the end of the world. Move to a normal
    country. :-D
    Mercury, Sep 1, 2006
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  3. ~misfit~

    ~misfit~ Guest

    Ok. My E4 that I have here has brown caps. Running semi-fine. So that's
    brown, blue and green for the 3,300uF ones. I heard after the fact that
    Soltek was grabbing any components they could get cheaply down at the
    markets towards the end there, and slapping them in their mobos. A shame
    they went bust as, other than the caps, this is a mighty-fine board. I think
    that they were a small company which tried to expand too quickly with
    insufficient capital.
    Yeah, I know of one other guy who did the same thing and he has the caps
    just sitting there too. However, his will no longer run at 200MHz FSB, he's
    had to drop it to 180 to get it stable. I tried emailing them quite a while
    ago and get returned email errors, "that domain no longer exists". I missed
    out on Soltek sending me caps.
    Good to hear it.
    I'm running all mine on 1.7L as well. I never upgraded further as the
    further BIOS upgrades are only to show the Sempron range's names correctly.

    My main E4 used to run an XP2500+ at 2.2GHz at default voltage, I never
    tried lowering vcore at first, it didn't occur to me, I was just happy that
    my 2500 would run at 3200 speed without *raising* vcore. However, after a
    couple years or so it would keep re-booting just as Windows was loading.
    Sometimes it would re-boot 6 or 7 times before it'd actually load Windows.

    Because the machine would run Prime95 all night and Memtest all day I didn't
    suspect the CPU/RAM/Mobo. At first I thought it might be the IDE cable, then
    the HDD so I used it as an excuse to upgrade. When it kept happening I
    suspected PSU and checked the 12v and 5v rails while the machine was
    booting/re-booting to see if they sagged. They were fine, as I thought they
    would be, I have a good 520W PSU.

    Next I suspected the IDE controller might be flakey. I swapped the HDD onto
    IDE2 but it still did the same thing. Finally, convinced that it must be
    something effecting both controllers I bought a PCI - ATA/SATA controller
    and ran the HDD off that. Still the same. As the machine ran fine and passed
    all stress-tests I could throw at it I didn't suspect that it could be
    easilly fixed in 2 minutes by raising vcore! I spent lots of money and a
    month trying everything else first.

    I'm assuming that the caps went out-of-spec over the time it was running and
    the load on the 12v rail as the HDD was thrashing and the CPU running at
    100% while the OS was loading was too much for the failing caps and they
    couldn't hold the voltage. (The 12v rail from the PSU was fine, it must have
    been after it hit the board's circuitry) It was only by accident that I
    discovered the cause of the problem. I decided to down-clock my machine as I
    was leaving it running 24/7 and I wasn't using anything like it's full power

    As soon as I reduced clock speed (multi) it booted clean every time. If I
    put it back up to 11 x I had to take the vcore to 1.725v before it would
    boot cleanly. It was a bit warm at that voltage (60°C on-die after 30
    minutes at 100% CPU) so I decided to run it a bit more slowly. It's now
    doing 10 x 200 at 1.55v. At first, 3 months ago, it did 2GHz fine at 1.50v
    so it's definitly not getting better. I raised it to 1.55v last month after
    a few false starts at booting.

    My 3,300uF caps don't show any signs of failure but I'm dead sure that they
    are the problem. It wasn't until after I had this problem that I had a PC I
    built using an E3 board come back and I saw it had bulging *and* leaking
    3,300 caps and 1,000uF caps near the RAM. Probably why some boards won't run
    stably at 200MHz, the big 3,300 caps are just power filters/smoothers for
    the CPU, I suspect the 1,000uF ones have more to do with the FSB.

    I've got a mate in the US who has ordered the caps I need from
    www.badcaps.com (who won't ship outside of the US/Canada) and he'll post
    them on to me. I'm a lucky guy.
    Heh! It has it's pros and cons. All-in-all I'm happy here. "Normal"
    countries scare me, they have terrorists bombing them for perceived wrongs.
    NZ never hurt anyone and the scenery and the weather are just fine. :)

    ~misfit~, Sep 2, 2006
  4. ~misfit~

    pheasant Guest

    Except you're too far from the US Midwest to fix mine once you have yours
    figured out. ;) Still got my acid core solder and propane torch at the
    ready. LOL

    pheasant, Sep 2, 2006
  5. ~misfit~

    ~misfit~ Guest

    Hi Mark,

    Yeah, sorry about that. ;-)

    I've replaced the 3 x 1,000uF caps around the top corner by the RAM slots
    that were bulging tonight. The original caps were 8mm diameter but even the
    guy at Badcaps has trouble getting those. His site says that he has them in
    stock again but check to see if you can use 10mm caps as the 8mm ones are
    *very* expensive. Only one of the caps on the 75FRN2-L is situated between
    two other caps so is a bit tight. I used some Sanyo caps that I took off a
    nVidia FX5200 that prematurely failed as replacements. The video card was
    only a year old, just out of warranty. The caps look perfect so I used those
    on this first board.

    Just waiting for the 3,300uF ones now. That'll take a while though.

    ~misfit~, Sep 2, 2006
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