ESA KLETRA 400 controll box

The ESA KLETRA 400 is a control/display module used in industrial automation and CNC systems, typically integrating a PLC, HMI panel, and power supply within a single enclosure. Common failure modes for this model include burnt‑out relay contacts, degraded LCD backlight, and capacitor failures on the main board; users often report intermittent communication or “no signal” errors due to faulty I/O modules. For initial troubleshooting, verify that the unit receives correct 24 V DC input, inspect all power supply capacitors and fuses for signs of damage, and check the serial/USB links for proper handshake and error codes from the HMI display.[oss-gpt-20b]

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We specialize in the repair and refurbishment of high-end industrial control electronics and power systems like this unit.

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