ASIC Repair Tools & Equipment: The Bench Kit, Tiered DIY to Pro

Quick answer

This is the ASIC repair bench kit -- the 15 tools D-Central's repair workflow calls for, ordered by the stage they serve (from a visual inspection through multimeter diode checks, a scope, thermal imaging, hot-air rework and reballing, to EEPROM/PIC flashing and bring-up). Each tool lists its recommended spec, what it is for, the repair stage, a DIY-vs-bench skill tier (7 are DIY-friendly) and a rough CAD cost band so you can build up the kit in the order you actually need it.

Start cheap and DIY: a good multimeter with diode mode, a CH341A EEPROM programmer and a USB-TTL adapter diagnose most faults for under a couple hundred dollars. Hot-air rework, a stereo microscope and BGA reballing are Bench-tier -- real microsoldering skill and gear, easy to make a board worse; practice on scrap first or send the board to a bench. A reference, not a guarantee; prices vary by supplier.

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Tool	Recommended spec	Stage	Tier	Cost (CAD)
USB microscope Inspect pads, solder joints, bridges, flux residue and BGA alignment	200x+ magnification	visual	DIY	~$40-150 CAD (approx, varies) Fine for inspection; for actual rework a stereo microscope is preferable, but a 200x USB scope is enough to look.
Anti-static mat / wrist strap ESD protection for boards and ASICs during handling and repair	Grounded ESD mat + wrist strap (grounded workstation)	visual	DIY	~$20-60 CAD (approx, varies) Cheap insurance against static-killing a good chip; verify the strap is actually earth-grounded.
Digital multimeter Rail voltage checks, domain/LDO impedance-to-ground tests, diode-mode chip checks	Fluke 15B+ or better; voltage/resistance + diode mode	unpowered-multimeter	DIY	~$60-200 CAD (approx, Bible lists no price) A real diode mode and reliable low-ohm range matter more than the brand; basic meters cover most checks.
Oscilloscope Confirm 25 MHz CLK square wave, decode UART 115200 8N1, check I2C signal integrity	100 MHz+ bandwidth, 2 channel, fine-tip probes	powered-scope	Intermediate	~$400-1,500 CAD (approx, varies) Bandwidth and channel count are the spec; entry 100 MHz 2ch scopes suffice.
Thermal camera Map heat distribution to find hot/cold chips and heatsink/thermal-paste failures	FLIR C5 or similar; 160x120 resolution minimum	thermal	Intermediate	~$600-1,200 CAD (approx, varies) Resolution (>=160x120) matters more than brand; phone clip-on thermal modules are a budget entry.
Soldering station Hand soldering of LDOs, capacitors, connectors and solder-wick cleanup	Hakko FX-951 or similar; temperature-controlled	hot-air-rework	Intermediate	~$150-400 CAD (approx, varies) Temperature control is the key spec; FX-951 is widely cloned, so buy from reputable sources.
Hot air rework station BGA ASIC chip removal and reflow at a controlled temperature profile	Quick 861DW or similar; controlled profile 350-380 C	hot-air-rework	Bench	~$400-900 CAD (approx, varies) Stable airflow and temperature control are essential; avoid cheap pencil-style heat guns for ASIC reflow.
Thermal paste / gel Reapply between ASIC die and heatsink after any heatsink removal	Fujipoly SPG-30B thermal conductive gel	hot-air-rework	DIY	~$20-50 CAD (approx, varies) Bible names Fujipoly SPG-30B specifically; reapplication is mandatory after heatsink removal or chips thermal-shutdown.
Flux and solder wick Wet joints for reflow and clean pads after chip removal	No-clean flux + solder braid/wick	hot-air-rework	DIY	~$15-40 CAD (approx, varies) Essential rework consumable; clean flux residue afterward to avoid corrosion and shorts.
BGA reballing kit Re-ball salvaged or replacement ASICs before reflow	0.4 mm lead-free Sn/Ag/Cu solder balls + reballing jig/stencil	reballing	Bench	~$30-150 CAD (approx, kit cheap, skill costly) Ball size (0.4 mm) must match the package; reballing is a high-skill microsoldering step.
EEPROM programmer Read/clone/write hash-board EEPROM so all boards in a miner match	CH341A (generic) or dedicated EEPROM cable/tool	eeprom-flash	DIY	~$10-40 CAD (approx, varies) CH341A clips are cheap; the real risk is writing wrong or mismatched data, not the hardware cost.
PIC programmer Read/reprogram PIC calibration data (frequency/voltage) on S19-series boards	Microchip PICkit3 (for PIC16F1704 on S19 series)	pic-program	Intermediate	~$50-120 CAD (approx, varies) Only S19-series boards use the PIC; correct model/revision firmware is required to flash.
Bench power supply Power a hash board off-miner for bring-up and load/hash testing	50 A capable (for standalone hash test)	bring-up	Intermediate	~$200-800 CAD (approx, varies) High current (>=50 A) is the spec; under-rated supplies sag under hash load and produce false failures.
USB-to-TTL adapter Serial console to the test fixture or board for diagnostic log viewing	CP2102 or CH340 based; 3.3 V logic, 115200 8N1	bring-up	DIY	~$5-20 CAD (approx, varies) Use a 3.3 V (not 5 V) adapter; counterfeit CH340/CP2102 chips may need specific drivers.
Hash-board test fixture / multi-tester Standalone PT1/PT2/PT3 testing (chip enumeration, pattern, frequency sweep); pinpoints the failing chip	Bitmain official fixture (V2.1/V2.3) or third-party ARC / STASIC / K3L-K8	bring-up	Bench	~$1,500-4,000+ CAD (pro, approx) Pro-shop gear; ARC/STASIC reportedly cut repair time ~6x vs manual but model coverage varies, and STASIC hash-sim needs a 50 A PSU.

Source: the D-Central Mining Bible (HASHBOARD_DIAGNOSTICS) + the Laval bench. Pairs with the ASIC repair service, the multimeter guide and the ASIC chip reference. We stock some of this gear under tools. A reference, not a guarantee.

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Last reviewed June 20, 2026.