I bought a new system from United Micro with the Thunder K7
Dual 1Ghz AMD processors (includes SCSI onboard) and
and it well for 5 months, but stopped a couple of weeks ago.
Normally, I leave the system on all the time but turn off the monitor.
Now I can't get it to boot up, no beeps, no video.
I tried disconnecting power to the drives, no change,
I tried removing the sound and video cards, no change,
I tried getting a local shop to test the power supply,
but they couldn't deal with a 24 pin power connector,
only the usual 20-pin ATX. So, I ordered a new powersupply
identical to the first, an NMB 460W. It is very expensive.
It arrived last night and I tried it. No change. So, I don't
think the power supply is bad after all.
I then tried removing
the board entirely from the case, so that it couldn't be shorting
out on it, and again, no change. I also tried even removing
the ram on the board, and no change, so I put that back in.
Now it's sitting there, just the powersupply, the ram,
and the dual processors with their big heatsink and fan each,
and nothing happens. I even tried hitting the reset-cmos jumper,
but no help there.
In fact, when I plug it in or hit the start button
(j13-15), the dual cpu fans spin around about just one revolution
and stop dead, all power gone. Also, when you just plug it
in the lights on the two built-in NIC's flash for about 1/3 of a second,
and then go dead. That's all it ever does.
I don't believe the
system ever suffered from a surge, because I have it plugged into
my ups with power conditioning and surge protection, etc.
And I haven't been messing around with the hardware,
the case had been closed for months. It just stopped cold.
I haven't pulled the CPU's or heatsinks or fans off yet,
but I figured, why bother?
By the looks of it you've tried most things I'd suggest. There's just two things I'd try before sending the board, or the whole system, back to the supplier. I'd pull the second CPU and see whether it will boot with one CPU in the first socket, try swapping it out for the second CPU if the first doesn't work.
Next thing 'd try is with a single DIMM in the first DIMM slot, again, swap out the DIMM for ther other one(s) if that doesn't work and you might want to try different DIMM slots too. If all of that fails the motherboard is simple defective and you should definitely return it to whomever you bought it from.
I would like to weigh in with the seemlingly endless sage of my Tyan 2462ng. Here's the background, I purchased this broad, brand-new, on the net ( woo hoo great price). I bought the rest of the pieces from my local hardware provider (Hard Drives Northwest), this is when the fun started. The board would not post with both procs, I got new procs, no dice. I sent the board back to Tyan, they sent me a brand new board. I bought a new set of procs and new ram....the board will no post at all. I then gave the board to HDNW, and said, "here, you fix the damn thing" they tried 3 different sets of new procs, new ram, and new PSU's....NOTHING!!!! I then called Tyan and talked a tech guy into fixing this thing. I sent Tyan everything: mobo, procs, ram.......so now I wait. I bought this board because it was the fastest thing out there, I need the horsepower her at work. I cannot believe how much of a pain in the ass this has been. Tyan needs to spank there R&D guys as well as the quality control unit.
Right, We have a thunder k7x, , it was wonderful, it ran perfectly for a whole 3 months, not the thing won't stay alive, whilst in my rack in telehouse. but it;s fine when i take it out. I have checked power, cabling, heat. hoting seems to be wrong no over heating or anything. The one last idea i have is to swap out the PSU but getting hold of these NMB E-ATX psu's is a bitch.
This is driving me insane. i have sat and watched it for about 12 hours straight and it was fine. i went to get some lunch came back and boom, it was down.
anyone make any suggesttions. personally i am thinking of replacing the board with the tyan tiger MPX, and a std power supply, but again i don't want to be spending th emoney if i can avoid it.
Hello to all, I have stumbled across this forum in my search of K7 owners with sucessful and not so sucessful installations.
With that, I had decided to register and share my thunder K7 experience,
(which by the way has been trouble free for over a year w/ rev "A").
I won't go into hardware component details as I believe most problems experienced with the K7's are not component hardware related, (I stated
most). I will, however, list generically what I have: WINXP NMB P.S., 3 com 905 TX (1st Slot) 2nd Slot: (nada), 3rd Slot: Audigy 2 (IRQ 18 all alone), 4th Slot: Happauge TV Card (love it), 5th Slot (nada). I have disabled both on-board N.I.C.'s and Video. Enough said, here is what worked for me.
I installed the board in a LIAN-LI PC-70 USB Case, FIRST, I ran to the hardware store a bought myself a handful of teflon washers, (please don't ask what size they are,, just large enough to facilitate the size of the screws). I "crazy glued" (: each washer to every mounting hole on the board, providing an isulation between the board and mounting posts, tightened all screws form the center of the board out.
This has been for over a year now, by the way, I did remove all washers and re-installed the board, guess what? The board turned on me and I
experienced all the failures I have read at this an other forums. Placed the washers back and 1 year and several months later it remains my stable
High-end workstation. Also the board would only function outside the case
prior to installing the teflon washers.
As an engineer in a field outside of this, I do not know or have an explanation why this board would want to be mounted in this way,
at any rate, it worked well for me.
I have had this board for over a year, and have been really fustrated with it. It is the worst experience with fooling with the inside of computers that I have had, and I started fooling with computers over 30 years ago. What a piece of $#!+ With a stack of CDs full of operating systems on my desk, it would load Win95, then upgrade to NT4.0 , then refuse to accept Windows 2000 or WindowsXP. Then after a few months it wouldn't even boot up at all. The box that I put it in is an Antec server case with 5 fans, with the largest power supply available at the time. I can not believe that they are selling this piece of junk. After this experience, I will *never* recommend a Tyan motherboard to anyone, and have had some second thoughts about AMD (who if I understand correctly, owns Tyan) as well.
I too have a Tyan Thunder K7 brand new system built for me. It has dual AMD 265s with 8 GB of RAM (memory specified by Tyan) It is a nightmare. It is running Windows XP64 because I'm trying to run a particular piece of software which requires it.
It ran in the shop. I took it home. Pressed power and in 10 seconds it just shut down. No beep. Nothing.
Took it back. Same problem there (thank goodness). Bad memory slot. The shop got a new motherboard. It ran in the shop. Took it home.
Ran for one day. Next day it booted up but power just quit after an hour or so. Thought it might be a fluke. Then it ran and I used it for about a week. One morning it stopped booting up.
The memory has been tested. There appears nothing wrong with it.
Took it back and now it will run if, and only if, we put 4 sticks in CPU 1 slots A1,A2,B1,B2.
However, TYAN says you ought to spread the memory between the two CPUs symetrically.
but it simply will not boot up with the suggested config of CPU1 A1,A2 and CPU2 A1,A2 and I even tried CPU1 A1,B1 and CPU2 A1, B2 just in case I was reading the config diagram wrong.
So here I sit with 4GB which Windows XP64 reports as 3GB (and 7GB when the full 8GB were installed and working).
You apparently can change the BIOS to get rid of the memory hole but then there is supposedly a heating problem.
I paid a fortune for this machine and what do you do?
I too couldn't possibly recommend TYAN.
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