Avalon Canaan 3300-03 PLUS Power Supply Unit Repair Guide & Components List

Avalon Canaan 3300-03 PLUS Power Supply Unit Repair Guide & Components List (2026 Update)

The Canaan Avalon PSU3300-03 PLUS is the workhorse 3400W power supply for the Avalon A10/A11 generation — A1066 / A1066 Pro / A1166 / A1166 Pro / A1246 / A1346 Pro miners. Built around a PFC + LLC half-bridge topology with the NCP1399 current-mode resonant controller, a modular high-voltage PFC sub-board, and a 200-285V universal AC input, the PSU3300-03 PLUS replaced the older PSU3300-01 PLUS1 with extended power capacity (3400W vs 3100W) and updated compatibility for the higher-tier Avalon Pro models. In 2026, with most A10/A11 fleets in their 4-5th year of service, component-level PSU repair is the realistic path to keep these miners hashing. This guide covers the 14 most vulnerable PSU3300-03 PLUS components, the documented indicator-light failure-code matrix, the modular PFC sub-board replacement procedure, and the full repair playbook with direct sourcing links.

Why Avalon 3300-03 PLUS PSU Repair Matters in 2026

The PSU3300-03 PLUS shipped in volume with the Avalon A1166 / A1166 Pro / A1246 generation — the peak deployment cohort for institutional Canaan mining fleets. Most units in the field are now 3-5 years into 24/7 service, which is the zone where bridge rectifiers fade, primary MOSFETs short, the PFC sub-board degrades, and fan bearings wear out. Replacement PSU3300-03 PLUS units are increasingly constrained on the secondary market, and Canaan's volume production for this generation has tapered. A small repair-bench inventory — primary MOSFETs (48N60DM2, MDF5N50F), bridge rectifiers (GBJ2510, KBU810, D25SB80, KBP408G), the NCP1399 LLC controller, the 2SB772 SMD driver transistor, the SCK20200 inrush thermistor, and the DS065J010C silicon-carbide output Schottky — covers the majority of bench-repair scenarios. Avalon operators running A1166-class fleets in cheap-power regions can keep these miners earning for several more years with structured PSU maintenance.

Compatible Avalon Miners

The PSU3300-03 PLUS series powered the following Canaan Avalon ASIC miners:

• A1066 family: A1066-48T / 49T / 50T, A1066 Pro-55T
• A1146 / A1126 family: A1146 Pro-63T, A1126 Pro-S-60T / 64T / 68T
• A1166 family: A1166, A1166 Pro (the volume-deployed institutional cohort)
• A1246 family: A1246 (the upper-tier A10 generation)
• Older A1056 cohort: A1056-44T / 45T / 46T (legacy compatibility)

Note the 03-vs-01 distinction: the older PSU3300-01 PLUS1 (3100W output) powered the A1056 / A1066 cohort, while the PSU3300-03 PLUS extends to 3400W to handle the higher-power A1166 Pro / A1246 / A1346 Pro models. Using the 01 variant on an A1166 Pro will under-power the miner and produce thermal-throttling symptoms; using the 03 PLUS on an older A1056 works but is over-specified. For the higher-tier A1346 / A1466 generation, the newer PSU3400-01 PLUS is the correct variant.

PSU3300-03 PLUS Architecture at a Glance

The PSU3300-03 PLUS is a multi-stage switching supply with a dual-LLC topology: main LLC1 half-bridge for the 13V main output and a separate auxiliary LLC2 half-bridge for the 12V auxiliary rail, fed by a common PFC stage and a flyback-derived 18VCC bias rail. The architecture chain is: AC input → EMI filter → bridge rectifier → power factor correction (PFC) → flyback circuit generating 18VCC bias → 18VCC powers the relay, the main LLC1 IC, the auxiliary LLC2 IC, and the PFC IC → PFC voltage boost (388-420V on C4 bulk cap) → main LLC1 IC drives main half-bridge → main sync rectifier → 13V main output → auxiliary LLC2 IC drives auxiliary half-bridge → auxiliary sync rectifier → 12V auxiliary output → auxiliary 12V also powers the MCU IC for communication, control, and protection logic.

The PFC stage uses a modular high-voltage PFC sub-board (the "PFC small board") that can be de-soldered and replaced as a complete unit without rebuilding the rest of the PSU. This modular architecture distinguishes the Avalon PSU3300 family from the Bitmain APW family (where PFC components are integrated into the main PCB and must be replaced individually) and the Whatsminer P21 (where the main PCB integrates the PFC stage with M6 copper-bar output bolts).

Specifications

• PSU3300-03 (base): AC input 200-285V 50/60Hz 16A Max, DC output 11.5-14.5V / ~3100W + 12V auxiliary @ 200W
• PSU3300-03 PLUS (3600W variant): AC input 185-285V, DC output 11.5-14.5V / ~3400W + 12V auxiliary @ 200W (extended low-voltage operation)
• PFC sub-board: modular high-voltage PFC submodule, de-solderable replacement unit
• LLC controller: NCP1399 current-mode resonant half-bridge controller
• Output connector: Avalon-specific multi-pin DC output (compatible with A1066 / A1166 / A1246 connector format)
• Protection: input overvoltage, output overvoltage, output overcurrent, ambient temperature, secondary-side heat dissipation, LLC heat dissipation, PFC heat dissipation
• Cooling: integrated output fan with status-LED-driven thermal monitoring

Component-level architecture

• AC input stage: F01 input fuse, AC input control switch (0/1), SCK20200 20Ω NTC thermistor for inrush current limit. Damaged AC bridge rectifiers GBJ2510 (25A single-phase bridge), D25SB80 (high-current glass-passivated), KBU810 (8A / 1000V), KBP408G (800V single-phase) are the BD01 / BD02 / BD03 positions on the PCB.
• PFC sub-board (modular): high-voltage PFC submodule that can be replaced as a complete unit. The PFC sub-board carries the PFC MOSFET, PFC choke, PFC bus capacitor, and the PFC controller IC NCP1654 at the U01 / U6 position (test: multimeter in diode gear, VCC-to-ground = ~0.5V drop; if absent, replace the NCP1654). Surrounding PFC components: Q01, Q05 (apply thermal paste on replacement), D01, D08, Q02, Q07, Q03, Q08, D02, D09 plus the F01 input fuse and the BD01 / BD02 AC bridge rectifiers. When this submodule fails (commonly traced by indicator-light pattern "4 flashes" = PFC heat dissipation protection), the whole submodule is de-soldered from the main PCB, joints cleaned, and a fresh replacement submodule soldered in.
• Main LLC1 half-bridge primary switching: 48N60DM2 N-channel MOSFET and MDF5N50F (500V N-channel) form the main LLC1 half-bridge pair at the Q30 / Q40 / Q25 / Q39 / Q15-Q18 positions. UL1 + R1 / R2 / R16 / R18 / D9 / D12 are the surrounding gate-drive support. Q1 and Q8 require thermal paste on replacement.
• Main LLC1 resonant controller (U2): NCP1399AM / NCP1399AC current-mode controller drives the main LLC1 half-bridge with current-mode resonant control. Test: multimeter in diode gear across C94 = ~0.5V; if absent, replace U2.
• Auxiliary LLC2 half-bridge + controller (UL2): a separate auxiliary LLC2 stage generates the 12V auxiliary rail. UL2 uses the same NCP1399AM / NCP1399AC controller class as the main LLC1. Test: VCC at UL2 to ground pin (pin 5) = ~0.5V; if absent or shorted to ground, replace UL2. Q16 and Q11 are the auxiliary LLC2 half-bridge MOSFETs — check for short-circuit before replacing the controller.
• Synchronous rectification (main 13V output): 5 sync rectifier MOSFETs per group at the Q26-Q29, Q31-Q38, Q41-Q44, Q56-Q59, Q45-Q50, Q52, Q75 positions with U17 / U18 sync drivers and the 2R2 sense resistor. Important: typically only 1 of the 5 MOSFETs in a group is damaged — inspect carefully rather than replacing the whole group. Apply fresh thermal paste before re-locking the heatsink.
• MCU control circuit: STM8S005C6T6 8-bit microcontroller on the MCU small board handles software communication, control logic, and protection. After hardware-level repair, software failures (PSU passes the 11.9V hardware bench test but the miner reports abnormal PS data or low hashrate) trace to the STM8S005C6T6 IC, its surrounding resistors, and decoupling capacitors. The MCU board is replaceable as a unit similar to the PFC sub-board.
• Communication IC (U14): handles I²C-style DAT/CLK and SCL/SDA signals to the miner control board. SCL/SDA normal voltage = ~3.3V. If communication is lost but the auxiliary 12V is healthy, check the output 6P cable and U14 surrounding components.
• Gate-drive support: 2SB772 SMD medium-power transistor (SOT-89) handles the gate-drive amplification chain.
• Output rectification: DS065J010C silicon-carbide Schottky diode handles secondary-side rectification. The SiC Schottky technology provides lower switching loss than conventional silicon Schottky at the LLC operating frequency.
• Auxiliary stage support: 1N4007 / M7 SMD rectifier diodes, US1M-13-F ultra-fast recovery diodes support the 12V auxiliary rail rectification and the control-circuit bias network. 1µF SMD 1206 ceramic capacitors and P40T15GU MOSFETs are auxiliary support parts.
• Status indicator LED: front-panel indicator drives the documented blink-code failure matrix (see Indicator Light Diagnostics section).

Indicator Light Diagnostics (Critical for Fast Field Troubleshooting)

The PSU3300-03 PLUS has a status LED on the indicator that signals failure mode by flashing pattern. This is the fastest first-pass diagnostic before opening the case — read the LED before discharging the bulk cap and starting bench work.

Most Common PSU3300-03 PLUS Failure Modes

• PSU dead — fan does not start, no output voltage — first check F01 input fuse. If blown, the cause is usually downstream — inspect UF1, QF1, QF2 driver chips and RF9, RF10, RF14, RF17, RF18, RF19 resistors for damage. A blown fuse usually indicates a primary-side short — replacing the fuse without finding the root cause results in immediate re-blow.
• AC bridge rectifier short from dust damage — GBJ2510, D25SB80, or KBU810 bridges at BD01 / BD02 positions can short after years of dust accumulation creating a leakage path between pins. Replace the failed bridge, install protective bushings on the 4 pins, and apply fresh thermal paste between the bridge and heatsink before reassembling. Also inspect the small KBP408G auxiliary bridge at BD03 for corrosion.
• PFC heat dissipation protection (LED blinks 4 times) — the PFC high-voltage sub-board has overheated. First check the sub-board heatsink thermal interface (most PSUs have thermal grease that has degraded over 3-5 years). If thermal interface refresh doesn't resolve, the PFC sub-board itself has failed and needs modular replacement: de-solder the failed submodule from the main PCB, clean the joints with anhydrous alcohol, solder in the replacement submodule, verify mechanical seating and connector alignment.
• LLC heat dissipation protection (LED blinks 3 times) — LLC half-bridge MOSFETs overheating. Check thermal interface between the 48N60DM2 / MDF5N50F MOSFETs and their heatsink. Inspect for cracked solder joints on the MOSFET source pads (high thermal cycling fatigue point). Replace any MOSFET that measures short in diode-mode test before reassembling.
• Output fan failure (LED steady on) — output fan motor or bearings failed. Replace with matching DC fan, ensuring airflow direction matches the original (intake or exhaust as labelled on the fan body).
• NCP1399 LLC controller failure — primary stage stops oscillating. Test the NCP1399AM controller by checking VCC supply at the IC and the gate-drive output waveforms on an oscilloscope (no waveform with VCC present = IC failed).
• Output ripple high under load — failed secondary-side output filter capacitors. Visual inspection for swollen tops or leaked electrolyte. Replace bulk output caps as a set (matched ESR).
• SCK20200 inrush thermistor sacrificed — a mains surge or repeated cold-start cycles can sacrifice the SCK20200 20Ω NTC thermistor. Replace with same value/spec.
• 2SB772 driver transistor failure — gate-drive amplification stage fault. 2SB772 SOT-89 is the standard replacement. If multiple 2SB772 positions show failure, root cause is usually an upstream control-circuit fault.
• Output rectifier failure (DS065J010C) — failed DS065J010C SiC Schottky produces low or unstable output voltage. Diode-mode test confirms the part.
• Ambient temperature protection cycling (LED blinks once) — PSU is operating above its rated ambient. Improve airflow around the PSU; stacking PSUs, mounting against walls, or placing in enclosed shelves restricts airflow and triggers ambient-temp protection at lower hashboard loads.

PSU3300-03 PLUS Repair Components List

The table below lists every component LYS Shenzhen stocks for PSU3300-03 PLUS repair. Each entry links to the corresponding part page — contact us at contact@lys-sz.com for bulk pricing, for the PFC sub-board module, or for complete PSU3300-03 PLUS replacement units.

Diagnostic and Repair Workflow

Bench setup requirements

• AC voltage regulator: 0-285V output for verifying the 185V startup threshold (PSU3300-03 PLUS variant) or 200V threshold (base PSU3300-03 variant)
• Electronic load tester: 3600W+ capable, 0-15V, 0-300A for full-load PSU3300-03 PLUS testing
• Power analyzer: power factor and real-power measurement after repair
• Multimeter: Fluke 15B+ or equivalent (diode mode for MOSFET / bridge testing, AC mode for output ripple)
• Oscilloscope: for inspecting LLC half-bridge switching waveforms and PFC bus ripple
• Soldering equipment: 80W+ constant-temperature iron, hot air station, BGA rework station for modular PFC sub-board replacement
• Discharge pen / bleeder resistor: mandatory for bulk cap discharge before opening the case
• Auxiliary materials: thermal paste / thermal interface gel for bridge-rectifier-to-heatsink interface, lead-free solder, flux, anhydrous alcohol for joint cleaning, protective bushings for bridge rectifier pins

Safety — mandatory before opening the case

The PSU3300-03 PLUS bulk capacitors store lethal amounts of energy even when AC is disconnected. Always disconnect the miner from AC power and use a discharge pen on the bulk cap before opening the casing. Verify residual voltage on the bulk cap with a multimeter — measure below 5V before touching the board. Wait for the fan to stop completely after AC disconnect — this confirms the bulk cap has bled down through the internal discharge resistor. Work on a grounded anti-static workbench. Never bypass the F01 input fuse with wire, foil, or a higher-rated fuse — it is sized to protect the PSU and the AC distribution.

Standalone bench test — hardware vs software fault isolation

Before opening the case, the documented standalone bench-test procedure isolates hardware faults from software faults in <2 minutes:

1. Disconnect the PSU from the miner.
2. Short-circuit the 2-pin on the right side of the output terminal (near the V+ terminal) with a short-circuit jumper. This is the documented enable signal that lets the PSU run standalone without a miner connected.
3. Apply AC power.
4. Set multimeter to DC voltage range. Connect "+" to the PSU "+" terminal and "-" to the PSU "-" terminal.
5. Read the output voltage:
   • ≥ 11.9V = hardware preliminarily OK. Reconnect to a known-good miner for full aging-test confirmation. If miner still reports low / abnormal hashrate, no hashrate, abnormal PS data, or related error codes, the fault is in the MCU board software — troubleshoot the STM8S005C6T6 IC and its surrounding components.
   • < 11.9V = hardware fault confirmed. Discharge bulk cap, open case, proceed with chip-level diagnostic below.

Diagnostic procedure (hardware fault path)

1. Step 1 — Read the indicator LED before opening the case. Decode the blink pattern (steady / 1 / 2 / 3 / 4 flashes) against the failure matrix above. This isolates the failure stage before any disassembly.
2. Step 2 — External visual inspection. Verify the AC inlet, AC power switch, and DC output cable / connector for damage, melted plastic, or oxidised pins. Check the case for deformation that could indicate prior thermal or impact event.
3. Step 3 — Discharge bulk cap, open case, internal visual inspection. After bulk cap discharged below 5V, open case. Look for sparking marks, swollen / leaked capacitors, burnt traces, blackened components, scorched PCB. A burnt-electronics smell when opening strongly indicates a component failure — the smell location often points to the failed part.
4. Step 4 — F01 fuse + AC input check. Verify the F01 input fuse continuity. If blown, the cause is usually downstream — inspect UF1, QF1, QF2 driver chips and RF9, RF10, RF14, RF17, RF18, RF19 resistors for damage before replacing the fuse.
5. Step 5 — AC bridge rectifier check. Diode-mode test on BD01 (GBJ2510), BD02 (parallel bridge), and BD03 (KBP408G auxiliary). Healthy bridge shows 0.3-0.6V drop on each diode-mode pair. Any short = replace the bridge, install protective bushings on the 4 pins, apply fresh thermal paste before reassembling to the heatsink.
6. Step 6 — PFC sub-board check. If indicator LED was "4 flashes" (PFC heat dissipation protection), inspect the PFC sub-board for visible damage and verify thermal interface to its heatsink. If sub-board itself has failed, modular replacement: de-solder the failed submodule, clean joints with anhydrous alcohol, solder in the replacement, verify mechanical seating.
7. Step 7 — LLC primary MOSFET check. Diode-mode test on 48N60DM2 and MDF5N50F primary MOSFETs. Healthy MOSFETs show 0.3-0.6V drop drain-to-source. Any short = replace, inspect surrounding gate-drive components (2SB772 driver transistors, gate resistors) for collateral damage.
8. Step 8 — NCP1399 controller check. Verify VCC supply at the NCP1399 IC. If VCC present but no gate-drive output waveform on oscilloscope, the IC has failed — replace.
9. Step 9 — Output stage check. Diode-mode test on DS065J010C SiC Schottky output rectifiers. Visual inspection of output bulk capacitors for swelling / leakage. Replace any failed parts.
10. Step 10 — Post-repair function test. Apply AC via voltage regulator at the spec input voltage (200V for base, 185V for PLUS). Verify the indicator LED transitions from any fault pattern to "normal" (typically off or steady-off pattern). Apply electronic load progressively up to rated 3400W (PLUS) / 3100W (base); verify output voltage stays within 11.5-14.5V; verify output ripple stays within spec on the multimeter AC mode. Run a minimum 2-hour soak test at 80% rated load before considering the PSU cleared for customer return.

Key test point voltages (documented reference)

• Standalone bench test output: ≥ 11.9V at the V+ terminal (with 2-pin enable shorted) = hardware OK
• C4 PFC bulk capacitor voltage: 388-420V DC during normal operation (large electrolytic cap on PFC output bus, ~390V typical)
• Flyback-derived 18VCC bias rail: powers the relay, main LLC1 IC, auxiliary LLC2 IC, and PFC IC
• Primary auxiliary VCC (PSU3300-01 PLUS1 reference): ~15V
• Auxiliary output power: 15V → 12V auxiliary rail
• Main circuit default output: 13V (adjustable 11.5-14.5V via the miner communication interface)
• NCP1654 PFC controller (U01 / U6): VCC-to-ground diode-mode reading = ~0.5V (if absent, IC failed)
• NCP1399AM main LLC1 controller (U2): diode-mode reading across C94 = ~0.5V (if absent, IC failed)
• NCP1399AM auxiliary LLC2 controller (UL2): VCC-to-pin-5 diode-mode reading = ~0.5V (if absent or shorted to ground, IC failed)
• U14 communication IC SCL / SDA signals: ~3.3V normal operation
• Communication board pin 7 (PSU3300-01 PLUS1): 1.5V = signal normal indicator

Modular PFC Sub-Board Replacement Procedure

The PSU3300-03 PLUS's modular PFC sub-board is its most distinctive repair feature compared to monolithic-PCB PSUs. When the indicator LED shows "4 flashes" (PFC heat dissipation protection) and the thermal interface refresh doesn't resolve, the entire PFC sub-board can be replaced as a unit:

1. Disconnect AC, discharge bulk cap below 5V, open case.
2. Identify the PFC sub-board (modular PCB perpendicular to the main PCB, with its own heatsink).
3. De-solder the sub-board's connection pins from the main PCB. Note pin orientation and polarity before removal — most sub-boards have a keyed connector to prevent reversed installation, but verify.
4. Lift the sub-board out, separating from its heatsink (the heatsink usually stays attached to the main PCB via screw mounts).
5. Clean the main PCB joint areas with anhydrous alcohol. Inspect for any solder bridge or burnt pad — repair if needed.
6. Apply fresh thermal interface compound to the heatsink contact area.
7. Install the replacement PFC sub-board: align mechanical mounts, seat connector pins, solder pins from the main PCB side.
8. Reinstall the heatsink screws.
9. Verify mechanical clearance — no PCB-to-PCB or PCB-to-heatsink contact that could short under vibration.
10. Reassemble case, function test per Step 10 above.

When Chip-Level Repair Makes More Sense Than Replacement

New PSU3300-03 PLUS stock is increasingly constrained — Canaan's volume production for this generation has tapered, and the secondary market is mostly other operators' failed PSUs. For Avalon A1066 / A1166 / A1166 Pro / A1246 fleet operators, component-level repair is the realistic path. A small inventory of the primary MOSFETs (48N60DM2, MDF5N50F), the bridge rectifiers (GBJ2510, KBU810, D25SB80, KBP408G), the NCP1399 LLC controller, the 2SB772 SMD driver, the SCK20200 inrush thermistor, the DS065J010C output Schottky, and the auxiliary rectifiers (1N4007/M7, US1M) covers the majority of bench-repair scenarios.

For the most common single-cause failure — PFC sub-board fault — a modular replacement sub-board avoids the time and risk of component-level repair on the high-voltage PFC stage. LYS Shenzhen sources PFC sub-board modules in addition to the discrete component-level parts listed above; contact us with your specific failure symptom for guidance on whether modular replacement or chip-level repair is the right approach.

FAQ — Avalon Canaan PSU3300-03 PLUS Repair

Which Avalon miners use the PSU3300-03 PLUS PSU?

The PSU3300-03 PLUS powers the A1066 / A1066 Pro / A1146 Pro / A1126 Pro-S / A1166 / A1166 Pro / A1246 Avalon miner family. It delivers 3400W output at 11.5-14.5V from a 185-285V AC input. The older PSU3300-01 PLUS1 (3100W) powered the earlier A1056 / A1066 cohort; the newer PSU3400-01 PLUS powers the higher-tier A1346 / A1466 generation.

What does the status indicator LED mean on the PSU3300-03 PLUS?

Steady on = output fan faulty. Flashes once + 3s off = ambient temperature protection. Flashes twice + 3s off = secondary-side heat dissipation protection. Flashes 3 times + 3s off = LLC heat dissipation protection. Flashes 4 times + 3s off = PFC heat dissipation protection. Read the LED before opening the case — it isolates the failure stage and saves bench time.

What is the PFC sub-board and why does it fail?

The PSU3300-03 PLUS uses a modular high-voltage PFC sub-board — a small PCB perpendicular to the main board, carrying the PFC MOSFET, choke, bulk cap, and controller. The sub-board has its own heatsink and is de-solderable as a unit. After 3-5 years of 24/7 operation the sub-board can degrade from cumulative thermal cycling, indicated by the "4 flashes" LED pattern. The modular design allows full sub-board replacement instead of component-level rebuild.

What is the difference between PSU3300-03 and PSU3300-03 PLUS?

The PSU3300-03 base delivers ~3100W from a 200-285V AC input. The PSU3300-03 PLUS variant delivers ~3400W from an extended 185-285V AC input (supporting lower-voltage mains operation while increasing output capacity). The PLUS is the volume variant for A1166 Pro / A1246 deployments where the base 3100W is insufficient. Both share the same physical form factor and connector pinout.

My PSU is dead after a thunderstorm — what should I check first?

Mains surges typically sacrifice the F01 input fuse and the SCK20200 NTC thermistor together — both are sacrificial protection elements doing their job. Check F01 continuity and inspect the SCK20200 for visible damage. If both are blown, also check the AC bridge rectifiers (GBJ2510 / D25SB80 / KBU810 / KBP408G) for collateral short damage from the surge transient.

How do I test the PSU3300-03 PLUS after repair?

Apply AC via voltage regulator at 185V (PLUS variant startup threshold). Verify the indicator LED stops flashing fault patterns. Connect electronic load and ramp progressively to 3400W rated. Verify output voltage stays 11.5-14.5V; verify output ripple (multimeter AC mode) is within spec. Run a 2-hour soak test at ~2700W (80% rated load) before clearing the PSU for customer return — this catches latent failures that survive the initial bench test but fail under sustained thermal stress.

Is it worth repairing a PSU3300-03 PLUS in 2026 vs replacing the miner?

Yes — the underlying miners (A1166 Pro / A1246 / A1346 Pro) can still earn at positive margins in low-to-mid power-cost regions. PSU replacement units cost a fraction of a new-miner upgrade. For single-fault PSU failures (one MOSFET, one bridge rectifier, one PFC sub-board), repair-bench cost is typically under 20% of a replacement PSU. Contact LYS Shenzhen at contact@lys-sz.com for parts pricing and bulk supply.

Sourcing PSU3300-03 PLUS Repair Parts

LYS Shenzhen stocks every component listed above for the Avalon Canaan PSU3300-03 PLUS, including the modular PFC sub-board replacement modules. For complete PSU3300-03 PLUS replacement units, for the broader Avalon PSU lineup (PSU3300-01 PLUS1, PSU3400-01 PLUS), or for bulk farm-scale orders, contact our team at contact@lys-sz.com — we operate an on-demand sourcing channel for Avalon repair components and complete PSU units.

Worldwide shipping from our Shenzhen warehouse via DHL, FedEx, UPS, and sea freight. DDP shipping available for US and EU customers; case-by-case for other lanes — request a quote with your shipping country for confirmation.