LPC824M201JHI33E HVQFN32 824J Microcontroller Avalon 841 PMU Board

LPC824M201JHI33E 32-Bit Microcontroller | HVQFN32 824J Replacement for Avalon 841 PMU Board Repair

The LPC824M201JHI33E is a 32-bit ARM Cortex-M0+ microcontroller in HVQFN32 package marked 824J, used on the Avalon Miner 841 PMU (Power Management Unit) board. When this MCU fails, the PMU stops responding to the control board: voltage rails go uncontrolled, the miner refuses to boot, and the hashboards stay dark even though they're healthy.

Common failure modes on Avalon 841 PMU: PMU board boots but no chain communication, voltage rails out of spec, MCU visibly damaged after a power-event, or board fully dead after a PSU fault. The LPC824M201JHI33E is the brain of the PMU's local control loop — replacement with a fresh MCU (re-flashed with the original firmware) restores PMU functionality without swapping the entire board.

When to Replace the LPC824M201JHI33E

• Avalon 841 PMU board not responding to control-board commands — MCU dead or corrupted firmware.
• PMU rails out of spec with no controller correction — MCU stuck or unable to drive the regulation loop.
• Visible damage on the HVQFN32 package after a power event — physical replacement required.
• PMU boots intermittently with random resets — MCU degraded, brownout / watchdog triggering randomly.

LPC824M201JHI33E Specifications

FAQ — LPC824M201JHI33E MCU

Q: How do I confirm the MCU is the failed part?
A: Symptom triage: PSU outputs healthy → confirms PSU. Control board responds to network ping → confirms control board. PMU board powered but not responding to control commands → MCU is the likely failure. Visual inspection for burn marks on the HVQFN32 confirms physical damage. For ambiguous cases, scope the MCU's clock and reset pins under power.

Q: Does the new MCU need to be re-flashed with firmware?
A: Yes — a fresh MCU ships blank. Flash the original Avalon 841 PMU firmware via SWD (Serial Wire Debug) using a programmer like a SEGGER J-Link or NXP MCU-Link. Without the right firmware image, the PMU won't function. Source the firmware from your existing healthy 841 board (read-back) or from the Avalon repair community.

Q: Rework profile for HVQFN32?
A: HVQFN32 has a center thermal pad that must reflow correctly — bottom-side preheat 130–150°C, top-side hot air 320°C with proper flux. After reflow, X-ray inspection or AOI is the only reliable way to confirm the center pad joined correctly. Hand-soldering is not suitable for this package.

Q: Bulk pricing for Avalon PMU repair benches?
A: Yes — email contact@lys-sz.com for tray-quantity LPC824M201JHI33E pricing.

Related products

• MC34063ADR2G Switching Regulator (Avalon 8-series PMU)
• AZ1117CH-2.5 LDO Regulator (Avalon 8-series PMU)
• Avalon PSU 3300W Power Supply (A1066 / A1166 / A1246)
• AMS1117 LDO 3.3V (Avalon hashboard)

Avalon 841 PMU repair benches stocking LPC824M201JHI33E MCUs by the tray? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouse.