Welcome to John Mears LG Telecom Repairs

Specialist LG telecoms equipment repair engineer.

LDK-100 PSU Repair

LDK-300 PSU Repair

(A, B or C) PSU Repair

LG 48v Power Brick

3.6V Lithium Battery

GDK System Firmware

iPECS MFIM Recovery

iPecs 80xx Series
Phone Recovery


Contact Me


GDK-162 or GDK-186 system cabinet power supply, DOS Power ED-3256A unit.

Is your system dead with no power LEDs on the PSU?

Is your cabinet emmiting a loud buzzing chattering sound?

Do you have loud humming on analog extensions & CO lines?

Is your PSU missing one voltage +5, -5, +30 or -48?

Is the red BATT LED lit up and only a single cabinet (can be on blinking with chattering sound)?

If so you need a PSU repair.

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