Esterline Angus 90-M Chart Drive

The Esterline Angus 90‑M Chart Drive is a 120 V, 60 Hz two‑range AC ammeter with an integrated chart display used in industrial process monitoring. Common failure modes for this type of unit include burned-out indicator LEDs or the chart drive board, tripped internal fuses, and degraded input contacts from long‑term exposure to high current spikes. First‑check diagnostics: verify that the 120 V supply is present and within spec; inspect the power connector and fuse for continuity; then examine the chart display panel for any burnt components or loose solder joints before proceeding with a detailed board test.[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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