{"product_id":"antminer-aml-control-board-replacement","title":"Antminer AML (Amlogic A113D) Control Board Replacement Service","description":"\u003cp\u003e\u003cstrong\u003eSearching for Amlogic A113D control board repair? AML control boards are replaced, not repaired — a new tested board costs less than component-level work on a dead A113D. We confirm the control board is the actual fault, fit the matching AML board, and validate the miner under real mining load.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe AML control board is the one with \u003ccode\u003eAmlogic A113D\u003c\/code\u003e printed on its main chip, and when it dies the miner gives you nothing to work with: no web interface, no IP, no answer to a ping. Bitmain fitted this platform to some production batches of the S19 and S21 families and fitted Xilinx, BeagleBone or CVITEK boards to others, so the first question on any suspected AML fault is not how to replace the board — it is what is actually in the chassis, and whether the board is actually what failed.\u003c\/p\u003e\n\n\u003ch2\u003eIs it the control board?\u003c\/h2\u003e\n\n\u003cp\u003eA dead control board does not report anything. It produces no diagnostic output, no error page and no log to read, because it never finishes starting. That absence is the symptom, and it looks like this:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eThe miner does not come up at all — no web interface, no IP address from DHCP, no response to a ping or to a network scan\u003c\/li\u003e\n\u003cli\u003eIt never finishes booting, or it restarts in a loop without ever serving a page\u003c\/li\u003e\n\u003cli\u003eThe IP report button produces nothing, where a working board would announce itself\u003c\/li\u003e\n\u003cli\u003eIt reaches the network but reports fewer hashboards than the miner has, or none\u003c\/li\u003e\n\u003cli\u003eVisible damage: a burnt smell, a scorched area near the Ethernet jack after a storm or a supply event, a melted or cracked connector\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eHere is the part most pages leave out. A dead power supply and a failed hashboard look exactly the same from outside — a miner that will not come up. Fans spinning proves nothing either, because on these machines the fans can run from a separate line while the board itself has no power. This is why the work starts with diagnosis rather than with a part. We fit a known-good AML board of the same type and retest: if the miner comes up, the board was the fault; if the same fault survives, it was never the board. That is also the method Bitmain publishes for separating a control board fault from a hashboard fault, and it needs a second known-good board and a second chassis to perform — which is precisely what an owner with one miner does not have.\u003c\/p\u003e\n\n\u003ch2\u003eWhy replacement, not repair\u003c\/h2\u003e\n\n\u003cp\u003eThe honest reason is money, not capability. We can diagnose an A113D board down to which stage of its start-up sequence fails. What we cannot do is make component-level work on that board cost the customer less than a tested board costs, and there is no point pretending otherwise. A replacement AML board is an inexpensive part; the bench hours needed to chase a dead SoC, corrupted onboard flash or a damaged one-time-programmable region are not, and the result carries less confidence than a board that already works.\u003c\/p\u003e\n\n\u003cp\u003eTwo things are worth saying plainly instead of hiding them.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSome faults genuinely are worth working on.\u003c\/strong\u003e A cracked Ethernet jack, a fatigued cable header, a single obvious cold joint — those are localised, and shops that take that work on quote five to ten business days for it, with the caveat that a re-flowed joint can crack again within days of going back into service. We do not build a service around that outcome. It is also the reason the board is diagnosed before anything is fitted, rather than sold to you on the strength of a symptom description.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe economics depend on which miner you have.\u003c\/strong\u003e On an S21-generation machine the arithmetic is not close: the board is a small fraction of what the miner is worth. On an older S19-generation unit the gap between a board and a used miner has narrowed enough that it is a real question, and we would rather you ask it before shipping than after.\u003c\/p\u003e\n\n\u003ch3\u003eThe three AML builds\u003c\/h3\u003e\n\n\u003cp\u003eSame processor, same firmware family, three different boards. The fan plug is what tells them apart at a glance.\u003c\/p\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;font-family:sans-serif;font-size:14px;table-layout:fixed;margin:16px 0 24px;\"\u003e\n\u003ccolgroup\u003e\n\u003ccol style=\"width:30%\"\u003e\n\u003ccol style=\"width:26%\"\u003e\n\u003ccol style=\"width:44%\"\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:10px 12px;text-align:left;vertical-align:top;\"\u003eBoard\u003c\/th\u003e\n\u003cth style=\"padding:10px 12px;text-align:left;vertical-align:top;\"\u003eFan plug\u003c\/th\u003e\n\u003cth style=\"padding:10px 12px;text-align:left;vertical-align:top;\"\u003eFitted to\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:10px 12px;vertical-align:top;\"\u003eStandard width\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;\"\u003e\n\u003cstrong\u003eFlat\u003c\/strong\u003e 4-pin\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;word-break:break-word;\"\u003eS19 XP, S19j Pro, S19k Pro and the other 19-series builds listed below — not the plain S19, S19 Pro, S19j or T19\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;\"\u003eStandard width\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;\"\u003e\n\u003cstrong\u003eSquare\u003c\/strong\u003e 4-pin\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;word-break:break-word;\"\u003eS21, L9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;\"\u003e\n\u003cstrong\u003eWider\u003c\/strong\u003e board\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;\"\u003e\n\u003cstrong\u003eSquare\u003c\/strong\u003e 4-pin\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;word-break:break-word;\"\u003eS21 Pro, S21 XP, S21+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eHardware Notes\u003c\/h3\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;font-family:sans-serif;font-size:14px;table-layout:fixed;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:10px 12px;text-align:left;vertical-align:top;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"padding:10px 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:10px 12px;vertical-align:top;\"\u003eBoard family\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;word-break:break-word;\"\u003eAML — Amlogic. One of Bitmain's four control board families, alongside Xilinx (XIL), BeagleBone (BB) and CVITEK (CV)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;\"\u003eSoC\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;word-break:break-word;\"\u003eAmlogic A113D, quad-core, in a compact BGA package\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;\"\u003eSystem memory\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;word-break:break-word;\"\u003eDDR3L SDRAM. Supplier varies by batch — ISSI and Micron parts both turn up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;\"\u003eFirmware storage\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;word-break:break-word;\"\u003eOnboard flash. No SD card slot, no removable media — the clearest difference from Xilinx and BeagleBone boards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;\"\u003ePorts and controls\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;word-break:break-word;\"\u003eEthernet with onboard magnetics, one micro-USB, two buttons, red and green LEDs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;\"\u003eHashboard interface\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;word-break:break-word;\"\u003eThree ribbon headers, one per chain. No FPGA — the CPU drives each chain over a software UART\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;\"\u003eFan headers\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;word-break:break-word;\"\u003eFour 4-pin positions, marked FAN1 to FAN4. Plug shape differs by build\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;\"\u003eSilkscreen\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;\"\u003e\n\u003ccode style=\"word-break:break-all;\"\u003eMiner_Ctrl_Board_A113D_AAP4_ENIG_V2.0\u003c\/code\u003e\u003cbr\u003e\u003ccode style=\"word-break:break-all;\"\u003eMINER_CTRL_BOARD_A113D_V1.1\u003c\/code\u003e\u003cbr\u003e\u003ccode style=\"word-break:break-all;\"\u003eWhite_Ctrl_Board_A113D_AAP4_ENIG_V1.1\u003c\/code\u003e\u003cbr\u003eSticker label: \u003ccode style=\"word-break:break-all;\"\u003eModel CM_CRD Vers: V1.0010\u003c\/code\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;\"\u003eSeller part codes\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;word-break:break-word;\"\u003eC76, C81, C83, CBE V2.0, A113D V1.0010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid rgb(238,238,238);\"\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;\"\u003eCross-family fit\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;vertical-align:top;word-break:break-word;\"\u003eNone. An Amlogic-era image on a Xilinx-era board, or the reverse, is a known way to kill a working board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhich miners use this board\u003c\/h2\u003e\n\n\u003cp\u003eThe AML platform turns up across two generations of Antminer. On the 19 series, boards of this type have been supplied for the \u003cstrong\u003eS19 88-chip\u003c\/strong\u003e and \u003cstrong\u003eS19 126-chip\u003c\/strong\u003e builds, the \u003cstrong\u003eS19j+\u003c\/strong\u003e, \u003cstrong\u003eS19j Pro\u003c\/strong\u003e, \u003cstrong\u003eS19j Pro A\u003c\/strong\u003e, \u003cstrong\u003eS19j Pro+\u003c\/strong\u003e, \u003cstrong\u003eS19j XP\u003c\/strong\u003e, \u003cstrong\u003eS19 XP\u003c\/strong\u003e, \u003cstrong\u003eS19 XP+\u003c\/strong\u003e and \u003cstrong\u003eS19k Pro\u003c\/strong\u003e. On the newer generation they cover the \u003cstrong\u003eS21\u003c\/strong\u003e, \u003cstrong\u003eS21+\u003c\/strong\u003e, \u003cstrong\u003eS21 Pro\u003c\/strong\u003e, \u003cstrong\u003eS21 Pro+\u003c\/strong\u003e, \u003cstrong\u003eS21 XP\u003c\/strong\u003e, \u003cstrong\u003eS21 Immersion\u003c\/strong\u003e, \u003cstrong\u003eS21 XP Immersion\u003c\/strong\u003e and \u003cstrong\u003eS21e Hydro\u003c\/strong\u003e, along with the \u003cstrong\u003eT21\u003c\/strong\u003e and the Scrypt model \u003cstrong\u003eL9\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eTwo entries on that list are worth reading closely, because they are where most of the confusion starts. \u003cstrong\u003eA plain S19, S19 Pro, S19j or T19 does not take an Amlogic board at all\u003c\/strong\u003e — those carry a Xilinx controller, and the families only diverge once you reach the 88-chip and 126-chip builds of the S19, which shipped with Amlogic, CVITEK, BeagleBone and Xilinx boards depending on the run. If the sticker on your machine says plain S19 or T19, this is not your page: see our \u003ca href=\"https:\/\/antminer-repair.com\/products\/antminer-xil-control-board-replacement\"\u003eXilinx Zynq control board replacement\u003c\/a\u003e instead. The other two families that turn up in those same S19 builds have pages of their own — \u003ca href=\"https:\/\/antminer-repair.com\/products\/antminer-cvitek-cv1835-control-board-replacement\"\u003eCVITEK CV1835 control board replacement\u003c\/a\u003e and \u003ca href=\"https:\/\/antminer-repair.com\/products\/antminer-bb-control-board-replacement\"\u003eBeagleBone control board replacement\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003eRead that list carefully, because it is not a promise about your machine. Bitmain changed control board suppliers between production runs, and the same model number shipped with Xilinx boards in one batch, BeagleBone in another and Amlogic or CVITEK in a third. Owners have documented buying identical model numbers months apart and finding different platforms inside. The model on the sticker narrows it down. Only the board itself settles it.\u003c\/p\u003e\n\n\u003ch2\u003eHow to tell which board you have\u003c\/h2\u003e\n\n\u003cp\u003eThis takes about a minute with the lid off, and it is worth doing before you order anything.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRead the main chip.\u003c\/strong\u003e The single reliable test. An AML board says \u003ccode\u003eAmlogic A113D QUAD-CORE\u003c\/code\u003e. A Xilinx board says Zynq, a BeagleBone board says Texas Instruments or Sitara AM335x, a CVITEK board says CV1835\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLook for an SD card slot.\u003c\/strong\u003e There is not one on an AML board. If you can see a card slot, whether from outside the case or once the lid is off, you are not looking at an AML board\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCount the circuit boards.\u003c\/strong\u003e A BeagleBone controller is two boards stacked together, a module plugged into a carrier. AML, Xilinx and CVITEK are each a single board\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRead the silkscreen along the board edge.\u003c\/strong\u003e If the printed board name contains \u003ccode\u003eA113D\u003c\/code\u003e, that settles it without needing to find the chip at all\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThen look at the fan plug\u003c\/strong\u003e to place it against the build table above\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cfigure style=\"margin: 0 0 25px 0;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0788\/4917\/9921\/files\/amlogic-a113d-quad-core-soc-marking-macro.webp?v=1787027477\" alt=\"Macro photo of the Amlogic A113D QUAD-CORE chip marking on an Antminer AML control board, next to the DDR3L memory and the micro-USB port\" loading=\"lazy\" style=\"max-width: 100%; height: auto;\"\u003e\n\u003cfigcaption style=\"font-size: 13px; color: rgb(102, 102, 102); margin-top: 8px;\"\u003eThe check that cannot mislead you. An AML board carries an Amlogic A113D quad-core processor, with the DDR3L memory sitting beside it.\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\n\u003cfigure style=\"margin: 0 0 25px 0;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0788\/4917\/9921\/files\/antminer-s19-series-aml-a113d-control-board-top-view.webp?v=1787028225\" alt=\"Antminer AML control board for the S19 series, top view showing four flat 4-pin fan headers, three hashboard ribbon connectors, the micro-USB port and no SD card slot\" loading=\"lazy\" style=\"max-width: 100%; height: auto;\"\u003e\n\u003cfigcaption style=\"font-size: 13px; color: rgb(102, 102, 102); margin-top: 8px;\"\u003eThe AML board fitted to the 19-series miners listed above. Fan headers are flat here — that single detail separates it from both S21 boards.\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\n\u003cfigure style=\"margin: 0 0 25px 0;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0788\/4917\/9921\/files\/antminer-s21-pro-xp-aml-a113d-control-board-top-view.webp?v=1787028225\" alt=\"Wide-format Antminer AML control board for the S21 Pro, S21 XP and S21+, top view with four square 4-pin fan headers marked FAN1 to FAN4 and three hashboard ribbon connectors\" loading=\"lazy\" style=\"max-width: 100%; height: auto;\"\u003e\n\u003cfigcaption style=\"font-size: 13px; color: rgb(102, 102, 102); margin-top: 8px;\"\u003eThe S21 Pro, XP and S21+ board: square fan headers and a visibly wider PCB. Same platform, different part.\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\n\u003cp\u003eIf you would rather not guess, photograph the main chip and the port edge and send the pictures with your enquiry. We would rather identify the board from a photo than have you order the wrong one.\u003c\/p\u003e\n\n\u003ch2\u003eBricked after a firmware update?\u003c\/h2\u003e\n\n\u003cp\u003eA miner that went down during or after an update is the one case where nobody can give you an answer over email — including us. It may need its software restored, or the board may be gone, and the two look identical from where you are standing. An interrupted update can leave an A113D board unrecoverable rather than merely unbootable: on this platform a power interruption during the one-time-programmable stage damages the main IC itself, which is a hardware outcome and not something a reflash reaches. Equally, plenty of miners that appear to have died from a firmware update turn out to have a hardware fault that was always there and simply surfaced during the reboot. If your unit needs software work rather than hardware, that is covered in our \u003ca href=\"https:\/\/antminer-repair.com\/pages\/firmware\"\u003eAntminer firmware section\u003c\/a\u003e. If nobody can tell which of the two it is, that is a diagnosis job, and diagnosis needs the machine on a bench.\u003c\/p\u003e\n\n\u003ch2\u003eWhich boards, and what to check before ordering\u003c\/h2\u003e\n\n\u003cp\u003eWe cover any model and any revision on this platform. There is no supported-models gate here and nothing to check against a list before you contact us.\u003c\/p\u003e\n\n\u003cp\u003eMatching matters in exactly one situation: you are buying a bare board and fitting it yourself. The three builds in the table above are easy to confuse, because the processor and the silkscreen family are the same on all of them, and the S21 Pro board is physically wider than the other two. Ordering by miner model alone is how people end up with a board that will not seat or will not take the fan connectors. If we are doing the replacement, matching the board to your miner is our problem, not yours. Send the machine and we will work out what belongs in it.\u003c\/p\u003e\n\n\u003cfigure style=\"margin: 0 0 25px 0;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0788\/4917\/9921\/files\/antminer-aml-a113d-control-board-installed-in-miner-connector-layout.webp?v=1787027477\" alt=\"Antminer AML control board installed in the miner with three hashboard ribbon cables, four fan leads and the power harness connected\" loading=\"lazy\" style=\"max-width: 100%; height: auto;\"\u003e\n\u003cfigcaption style=\"font-size: 13px; color: rgb(102, 102, 102); margin-top: 8px;\"\u003eAn AML board in place: three hashboard ribbons, four fan leads, one power harness. Worth comparing against your own machine before buying a bare board.\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\n\u003ch3\u003eWhat happens after intake\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake and incoming inspection.\u003c\/strong\u003e We record the condition as received, the board markings, the connector layout and any visible damage, along with what the miner was doing when it stopped\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagnosis.\u003c\/strong\u003e We establish whether the control board is the fault, rather than assuming it. That means separating it from the power supply and the hashboards, and where the machine does not start at all, following the start-up sequence through the service port to see which stage it fails at\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting.\u003c\/strong\u003e The correct AML build for your miner is installed and the connections checked\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFirmware and configuration.\u003c\/strong\u003e The board is brought up on the right software configuration for the machine it is going into\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValidation under load.\u003c\/strong\u003e The miner runs under real mining load and is checked for all hashboards present and stable behaviour before it ships back\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cfigure style=\"margin: 0 0 25px 0;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0788\/4917\/9921\/files\/antminer-s21-pro-aml-control-board-replaced-all-hashboards-mining.webp?v=1787027477\" alt=\"Antminer S21 Pro dashboard after AML control board replacement, all three hashboards detected and mining at 229.55 TH per second\" loading=\"lazy\" style=\"max-width: 100%; height: auto;\"\u003e\n\u003cfigcaption style=\"font-size: 13px; color: rgb(102, 102, 102); margin-top: 8px;\"\u003eWhat finished looks like: an S21 Pro back on the AML platform, all three hashboards detected, 229.55 TH\/s under real mining load.\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\n\u003ch3\u003eTwo things to know before you ship\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eYour old board is disposed of.\u003c\/strong\u003e We do not keep removed boards in storage. If you want yours back, tell us before the work starts — once it is gone we cannot retrieve it.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eExpect the hashboards to need attention too.\u003c\/strong\u003e In our experience a control board fault rarely arrives alone, and the honest reason turnaround stays at 4-5 business days is that the job is usually not just a swap. This is not an upsell, it is the shape of the actual work: one intake, one diagnosis, one shipment, instead of fitting a board and discovering the real problem afterwards. If your miner needs board-level work as well, we handle both in the same visit.\u003c\/p\u003e\n\n\u003cp\u003eAll work is 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\u003eSend the whole miner rather than the board on its own. Bitmain gives the same advice for its own service, because a board tested by itself carries no guarantee that it will work in your specific machine, and a fault that arrived with the board gets missed entirely when only the board travels. \u003ca href=\"https:\/\/antminer-repair.com\/pages\/contact\"\u003eContact our repair team today and get your miner back to full power.\u003c\/a\u003e\u003c\/p\u003e","brand":"Antminer Repair","offers":[{"title":"Default Title","offer_id":51713627062545,"sku":"CB-AMLAMLOGIC","price":70.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0788\/4917\/9921\/files\/antminer-s21-pro-xp-aml-a113d-control-board-top-view.webp?v=1787028225","url":"https:\/\/antminer-repair.com\/products\/antminer-aml-control-board-replacement","provider":"Antminer Repair","version":"1.0","type":"link"}