Reward for help will be discussed in Private Messages  |
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Hi, guys! If anybody can help me with my problem? wallet.dat from Litecoin Core was deleted from HDD in late 2015. This year it was restored with using special soft. But if to replace new one generated in Litecoin Core wallet with restored wallet.dat and to try launch the wallet this message will appear: wallet.dat corrupt, salvage failed!  Is it possible to extract the private key from this file? |
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Hi all,
I will be stopping all development and changes for a while (8 months at least).
I've been diagnosed with Acute Myeloid Leukemia, and have just gone through 1st round of chemo therapy.
I'll be going for another round of chemo therapy, and than bone marrow transplant (thank god my sis is a match), and i'll take at least 6 months to recover from the transplant.
At this point, btc-poolwatch.com will have to take a backseat. I'll keep the service running.
I'll be back.
Regards,
Koo
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Started mining in June, this is my rig, 2x HD 5850 and 1x HD 6850, planning to replace 6850 with a 58xx and add 1-2 more GPUs (some 58xx) by next month. Had to replace Corsair VX 550 because it broke after approx. 336h of continuous load of ~600W (all GPUs and Q9300 overclocked and overvolted). TX850 is fine now  From your pic, the PSU 12V pin on the ATX connectors are burnt. If you still have the PSU, it is still usable. Just replace the pins and the ATX connector and you are good to go. You can refer to the following: https://bitcointalk.org/index.php?topic=53904.0 |
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I'll summarise some points in that page as best as I can. 1. Prototype board. 2. It runs only 1x so it's not suitable for gaming.  3. Only tested in Linux. But should work in windows, as there is no software to install. 4. (If I read this correctly) There is separate 12V connector to power the cards connected to this daughter board. (I think you can see it in one of the pictures) 5. Chinese will take over the world. (j/k. My own words) That's all. |
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Updated. Please let me know if your information is still not reflected correctly. Tks. |
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fixed. sorry about that.
I was overseas and was not monitoring the status of the server so it took a while to get it back up.
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In the very first picture - the ASUS board with the two burnt up pins.. I suspect it's not poor contact/arcing - it would be really unusual for two pins in one connector to be loose. These are basically molex mini-fit jr. style connectors, and, if memory serves, they're rated to 13A per pin. Those two pins are both 12V+, and in fact, they're the only 12V+ on the 24 pin ATX connector. It's more likely that you're actually pulling more than 26A (312 Watts) and that they burnt up due to over current. 13A is MAX contact rating, so 10A (240 Watts total) is a safer number for continuous operation. It will probably happen again, unless you power the cards with a separate power connector. Enigma P.S. To de-solder the female connector on the motherboard, you'll need a pretty good soldering iron. Most of those particular pins are (most likely) connected to a power/ground plane on an internal layer, and that will sink a LOT of heat. Use a big tip (biggest you have), put some no-clean solder on the tip of the iron to get it wet, and then set it on the pin and wait.. It will eventually go molten. Use a solder-sucker to remove the molten solder.. Repeat for each pin. Replacement connector here: http://www.mouser.com/search/ProductDetail.aspx?qs=g5f4E6w8l8gzEjxCgQ0R8g%3D%3DSolder sucker here: http://www.mouser.com/ProductDetail/Apex-Tool-Group-Formerly-Cooper-Tools/7874B/?qs=sGAEpiMZZMt%252biMJH3c40u7BCFiF%252blJXomEfWxnrcMeE%3dYou brought up a very good point on having both pins burnt. Though the specs for the replacement connector says 6A? The board had 4x5850s with one of them on a 1x extension (without external power). In fact all my rigs are pulling power via the motherboard. I'll have to go and check on all of them. Currently I'm using a solder sucker made of plastic (from goot). Does the metal type performs better? |
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Not sure about this one, As a secondary precaution, I set the router to power down for 15mins every day at 12midnight via a timer. This, I hope gives everything a chance to cool down.
15 min cool-down does very little in a 24 hours day Thanks for sharing, True...I'm being greedy. I guess I should just make sure all the power is distributed properly. |
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Pls feel free to share your stories.  |
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240v @ 13A plugs. The black plug is an APC 5way extension with surge protector. This was pulling about 1500W-1800W in total (I can't remember, this was a while back) for 3 rigs. In theory, 240V@13A gives over 3000W. But at 1800W, the plug was warm to the touch and over time, it melted. Luckily I discovered this as I was moving the rigs to a different location.  This COULD have caused a fire, especially you can see it was sitting on carpets. I've moved the rigs to a different room with 3 phase power with wires rated up to 20A. I've also split up the power plugs and check them with a infra red temperature probe. As a secondary precaution, I set the router to power down for 15mins every day at 12midnight via a timer. This, I hope gives everything a chance to cool down. |
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I purchased this Cooler Master 1000W psu at about $50 pre-owned. After running it for a few days, the system became unstable. I did the same checks and took apart everything to discover this:  Incidentally, this uses the same pins as the ATX connectors. They are of the same series where the ATX is 12x2 and this is 5x1. I de-soldered the female connectors and replaced them with wires and molex. This is running stable eversince.  |
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Hi all, After mining for about 6months, I've had some equipment failure and have learnt some stuff along the way. So I thought I'll start this thread to share some experience. Damage to ATX connector (12V lines) This is on an ASUS board. This rig was getting unstable with random reboots, and it I could not figure out what was wrong with it. The burnt marks are not visible if the PSU ATX plug is in place. I only discovered this when I took apart everything to check. I suspect the male-female pins contacts are loose thus causing arc-ing between the pins. I ran 4 GPUs all direct from the PCIE slots and this may have been too much on the 12V lines? I've since replaced the ATX connector on the PSU (cut off the pins + a bit of wire and re-pin it). This board is definitely still working, and I'll try to salvage it with a new female ATX connector. But I tried de-soldering the female connector on the mobo without success. I'll try it again when I'm free. |
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I like the attention to details in using cable ties and cable holders (to stick the sata cable on the wooden base, and the GPU base). But there's just too much cables to do a proper cable management. |
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Just saw your TyGrr setup photos. I think you should be able to do this easily.
I understand the flood in Thailand is subsiding. Hope it did not affect you much.
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