What Is This Control Board? This is a genuine replacement main control board (PCB) for the Rocket Espresso R58, part number A190004664. Rated at 230V / 50Hz, this board is specifically for R58 machines manufactured before May 2020, with machine code RE791R1A11 and firmware version LIV-RED1NA V.6.10. It is a direct OEM replacement — confirm your machine code before ordering. Compatible Rocket Espresso Models Rocket R58 2015 Rocket R58 (from February 2018) Rocket R58 (from September 2023 — verify machine code RE791R1A11) Important: This board is for machines manufactured before May 2020. If your R58 was made after May 2020, a different control board may be required. Contact us with your serial number to confirm. Part Details Part number: A190004664 Voltage: 230V / 50Hz Machine code: RE791R1A11 Firmware version: LIV-RED1NA V.6.10 Applies to: Machines manufactured before May 2020 Type: Main control board / PCB Symptoms of a Faulty Control Board Machine not powering on or randomly shutting down Incorrect or erratic temperature readings on the PID display Pump or solenoid not activating during extraction Display errors, blank screen, or unresponsive controls Machine behaving inconsistently despite other components testing correctly Before Replacing the Control Board At $280, this is a high-value part — rule out simpler causes first: Check fuses and mains voltage at the machine Test the temperature probe (PT100) for correct resistance values Inspect wiring harness connectors for corrosion, moisture, or loose pins Confirm the issue persists after a full power cycle and reset How to Replace the R58 Control Board Isolate the machine from power completely before opening the casing Photograph all wiring connections and note any DIP switch or jumper settings before disconnecting Remove the existing board by unscrewing the mounting points and disconnecting all connectors Transfer any DIP switch settings from the old board to the new one Fit the replacement board, reconnect all wiring per your photos, and power on Recalibrate PID temperature settings if required after installation Control board replacement is best performed by a qualified espresso machine technician. Contact us if you need installation guidance or compatibility confirmation. Why Buy From Bear Coffee Machine? Genuine Rocket Espresso OEM control boards — not aftermarket copies Fast shipping from Sydney, Australia Technical support available — we can verify compatibility using your machine’s serial number and machine code