{"title":"Bitdeer Miner Repair","description":"\u003cp\u003eBitdeer designs its own SEAL chips, so a SEALMINER is repaired by a lab that works at chip level rather than one that swaps parts. One model has its own page here: \u003ca href=\"\/products\/sealminer-a2-hashboard-repair-service\"\u003eSealminer A2 hashboard repair\u003c\/a\u003e. For any other SEALMINER, write to us before shipping. Other SHA-256 machines: \u003ca href=\"\/collections\/antminer-21-series-repair\"\u003eAntminer 21 series hashboard repair\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"sealminer-a2-hashboard-repair-service","title":"Sealminer A2 Hashboard Repair Service","description":"\u003cp\u003eYes. Sealminer A2 hashboard repair brings back a board that has stopped hashing or come back short. The miner's User Panel lists all three boards with their own hashrate and temperature; a board at zero, one sitting under its neighbours, or one missing from the list is a fault. Component-level repair in the USA, 4-5 business days.\u003c\/p\u003e\n\n\u003cp\u003eSealminer A2 hashboard repair puts a machine back on its full 226 TH\/s instead of leaving it running on two thirds of itself. We diagnose at board level, repair at component level and validate under load, in our USA-based lab. Working out which of the three boards inside has actually failed is not your job and not something the machine makes obvious. You tell us what the numbers did; we open it and find out why.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Diagnostics and Common Issues with Sealminer A2\u003c\/h2\u003e\n\n\u003ch3\u003eQuick Symptom Checklist\u003c\/h3\u003e\n\n\u003cp\u003eThese are the readings that bring an A2 to us. Rates and counts differ from machine to machine and between production batches, so match the shape of what you see rather than the digits.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eOne board shows 0 TH\/s in the User Panel while the other two keep working, and the machine settles near 150 TH\/s\u003c\/li\u003e\n\u003cli\u003eOne board's hashrate sits below the other two and never catches up, however long the machine runs\u003c\/li\u003e\n\u003cli\u003eA board is gone from the list altogether - not zero, absent - after a restart or a power cut\u003c\/li\u003e\n\u003cli\u003eThe rate falls away as the machine warms up and comes back after it has stood powered off for an hour\u003c\/li\u003e\n\u003cli\u003eOne board's temperature reads far from the other two, or reads nothing at all\u003c\/li\u003e\n\u003cli\u003eThe miner restarts on its own a few minutes after it reaches full rate\u003c\/li\u003e\n\u003cli\u003eNothing in the interface turns red, but accepted work has been drifting down for weeks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eAbout log lines, plainly.\u003c\/strong\u003e Bitdeer does not publish the strings a Sealminer writes in its own log, and we will not print lines from another manufacturer's machine and let you assume they are yours. If your A2 has written something you do not recognise, send the log text together with the miner and we will read it against the board.\u003c\/p\u003e\n\n\u003ch3\u003eModel-Specific Patterns We See on Sealminer A2\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe board that went quiet while the machine stayed up.\u003c\/strong\u003e An A2 with one board down does not stop; it keeps hashing on what is left, and the owner usually finds out from the revenue rather than from an alarm. What you see is a rate that has settled at roughly two thirds of the machine and stays there. It is not the pool and not the network - both of those take the whole machine down, not one board of three. The fault is on that board, and separating the possible causes is bench work.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eYou cannot count your way to the answer on this model, and that is not your fault.\u003c\/strong\u003e On most machines an owner can compare the chip count a board reports against the number the manufacturer publishes. Bitdeer publishes no chip count for the A2, no board reference and no service documentation of any kind, so there is no published number to compare against. What you can see is the per-board rate and temperature, and on this model that is the whole of the evidence available to you. It is enough to tell us the machine has a problem, and it is not enough to tell you which one.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHeat that shows in the numbers before it shows anywhere else.\u003c\/strong\u003e An A2 pushes about 1,240 W through each of its three boards in an air-cooled chassis. When the thermal path stops doing its job, the machine does not fail - it fades, a little more each week, and recovers whenever it has been off long enough to cool. Owners routinely read this as a pool problem or a bad tune. It is neither, and by the time it is obvious the board has usually been running hot for months.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe board that came back worse than it went away.\u003c\/strong\u003e Getting a board out of an A2 is a mechanical job rather than a plug-and-play one, and boards that have already been out once reach us carrying the original fault plus something new that was added on the way. We see this most often on machines bought second hand, where someone had a look before selling. We record the condition of every board at intake for exactly this reason.\u003c\/p\u003e\n\n\u003ch3\u003eHardware Notes\u003c\/h3\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;font-family:sans-serif;font-size:14px;margin:16px 0 24px;\"\u003e\n\u003ccolgroup\u003e\n\u003ccol style=\"width:32%\"\u003e\n\u003ccol style=\"width:68%\"\u003e\n\u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color:rgb(248,248,248);border-bottom:2px solid rgb(238,238,238);\"\u003e\n\u003cth style=\"padding:12px;text-align:left;vertical-align:top;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"padding:12px;text-align:left;vertical-align:top;\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eAlgorithm and cooling\u003c\/td\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eSHA-256 (Bitcoin), air-cooled, four fans\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eRated hashrate\u003c\/td\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003e226 TH\/s at about 3,729 W, roughly 16.5 J\/TH, 200-240 V single phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eHashboards per miner\u003c\/td\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eThree. Bitdeer's own A2 air-cooling guide walks through removing the middle one of them\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eWhat one board is worth\u003c\/td\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eAbout 75 TH\/s, a third of the machine, and about a third of what the machine earns while it is down\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003ePower per board\u003c\/td\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eAbout 1,240 W, which is why the thermal path is the first thing we look at on this model\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eChip family\u003c\/td\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eSEAL02, Bitdeer's own SHA-256 chip, fabricated at TSMC. It is used in no other manufacturer's hardware, and no third-party firmware exists for it\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eChips per board\u003c\/td\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eNot published by Bitdeer. We will state the number here once we have counted it on a board ourselves, not before\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eChip grouping\u003c\/td\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eNot published by Bitdeer. The miner names its own grouping in its interface, and that is the name this table will use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eHashboard part number\u003c\/td\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eNot published by Bitdeer. We read it off the board at intake and record it with your repair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eSpare boards on the market\u003c\/td\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eNone. Bitdeer sells the A2 control board, power supply and fans as spare parts, and no hashboard, at any price, from anyone (checked September 2026)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat the Log Is Telling You\u003c\/h3\u003e\n\n\u003cp\u003eYou do not have to act on anything in this table. It is here so you know what state the machine is in before you decide to ship it.\u003c\/p\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;font-family:sans-serif;font-size:14px;margin:16px 0 24px;\"\u003e\n\u003ccolgroup\u003e\n\u003ccol style=\"width:30%\"\u003e\n\u003ccol style=\"width:36%\"\u003e\n\u003ccol style=\"width:34%\"\u003e\n\u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color:rgb(248,248,248);border-bottom:2px solid rgb(238,238,238);\"\u003e\n\u003cth style=\"padding:12px;text-align:left;vertical-align:top;\"\u003eWhat you see\u003c\/th\u003e\n\u003cth style=\"padding:12px;text-align:left;vertical-align:top;\"\u003eWhat it usually means\u003c\/th\u003e\n\u003cth style=\"padding:12px;text-align:left;vertical-align:top;\"\u003eWhat we do with it\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eOne board at zero, two still working\u003c\/td\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eThat board has stopped answering rather than slowed down. Quite a few different faults end this way\u003c\/td\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eWe bring the board up on the bench and follow it until we find where it stops\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eOne board's rate below the other two\u003c\/td\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eAt least one ASIC on that board is no longer doing its share, steadily or intermittently\u003c\/td\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eWe isolate what has stopped answering and establish what took it out before anything is replaced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eA board absent from the list entirely\u003c\/td\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eThe machine is not seeing the board at all, which is a different thing from a board hashing badly\u003c\/td\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eWe rule out the machine side before we touch the board, because both ends produce this\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eRate fades as it warms, returns when cold\u003c\/td\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eHeat is staying in the silicon instead of leaving it\u003c\/td\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eWe clean the board, renew the thermal interface, then run it hot deliberately to see whether it holds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eA board temperature far off its neighbours, or blank\u003c\/td\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eThe board is reporting something the machine cannot use. There are many reasons for it and the interface shows none of them\u003c\/td\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eWe put the board under a known load where what it reports can be checked against what it is actually doing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eRestarts a few minutes after full rate\u003c\/td\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eSomething in the machine cannot hold the load. The board and what feeds it look identical from the dashboard\u003c\/td\u003e\n\u003ctd style=\"padding:12px;vertical-align:top;word-break:break-word;\"\u003eWe reproduce it with the machine assembled, which is the fastest way to tell those two apart\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eDiagnostics Focus\u003c\/h3\u003e\n\n\u003cp\u003eTwo things set the order of work on an A2. Everything is inspected and recorded before anything is powered, because there is no published reference for this board anywhere in the world - we are building that reference ourselves, machine by machine, and a board that arrives already damaged has to be told apart from a board we damaged. After that we separate the board from what feeds it before any rework starts. At about 1,240 W per board, a wrong call there does not stay a wrong call; it becomes a second failure a week later.\u003c\/p\u003e\n\n\u003ch2\u003eOur Professional Repair Process\u003c\/h2\u003e\n\n\u003ch3\u003eGotchas\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eWe do not bench a Sealminer board on a profile built for someone else's silicon.\u003c\/strong\u003e SEAL02 is Bitdeer's own chip, it appears in no other manufacturer's hardware, and there is no third-party test fixture for these boards on the market. A board tested under the wrong assumptions comes back \"repaired\" and fails in the machine, which helps nobody.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWe will not quietly move boards between machines.\u003c\/strong\u003e Fitting a board out of a second A2 is the fastest way to get a machine hashing again and it carries a cost the owner should hear first: Bitdeer's published after-sales terms exclude machines whose boards are not original to them. If that trade is worth making on your machine it is your call to make, not ours to make for you.\u003c\/p\u003e\n\n\u003ch3\u003eTypical Service Scenario\u003c\/h3\u003e\n\n\u003cp\u003eMost A2 boards reach us for one of three reasons. The machine spent a year in dusty or humid air - Bitdeer's own guidance is to clean it out every three to six months, and almost nobody does. The machine was bought used, with no history, and started dropping a board within weeks. Or the first attempt at a fix happened somewhere else, and the board arrives with the original fault still in place and a new one added to it. The A2 fleet that shipped through 2025 is now past its first year, which is when all three of these start arriving together.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Happens After Intake\u003c\/h3\u003e\n\n\u003cp\u003eIntake, incoming inspection, diagnostics, component-level repair, then cleaning and replacement of the thermal interface. Every board is tested on our bench equipment where a profile for it exists, and every repair finishes with a minimum of one hour under load in a running miner. Extended burn-in over several days is available as a separate add-on.\u003c\/p\u003e\n\n\u003ch3\u003eWhat We Need You to Send\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eSend the complete miner, even when only one of the three boards has failed.\u003c\/strong\u003e A Sealminer board has nowhere else to be proved: no bench fixture for it is sold anywhere, and a board that has been repaired but never run in an A2 has not been tested, it has only been worked on. Your machine is where the repair is validated, so it travels with the board. It also settles the questions the dashboard cannot - whether what you are seeing starts at the board or at what feeds it - in an afternoon instead of an exchange of emails.\u003c\/p\u003e\n\n\u003ch3\u003eDiagnostics and Validation Equipment\u003c\/h3\u003e\n\n\u003cp\u003eBoards are diagnosed on our STASIC and ASIC REPAIR benches, which give a chip-level picture on every family they carry a profile for, and the picture is where rework starts rather than where it ends. On this model the decisive test is the machine itself: full load, long enough to get hot, with every board in the list reporting for itself.\u003c\/p\u003e\n\n\u003cp\u003eAll repairs are performed personally by Alex, who has been servicing ASIC miners since 2019. \u003ca href=\"https:\/\/antminer-repair.com\/pages\/aleksandr-muranov\"\u003eSee credentials →\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003eContact our repair team today and get your miner back to full power.\u003cbr\u003e\u003ca href=\"https:\/\/antminer-repair.com\/pages\/contact\"\u003ehttps:\/\/antminer-repair.com\/pages\/contact\u003c\/a\u003e\u003c\/p\u003e","brand":"Bitdeer","offers":[{"title":"Default Title","offer_id":54709352923409,"sku":"HB-SEALMINER-A2","price":350.0,"currency_code":"USD","in_stock":true}]}],"url":"https:\/\/antminer-repair.com\/collections\/bitdeer-miner-repair.oembed","provider":"Antminer Repair","version":"1.0","type":"link"}