3 Main Repair Issues With The Gendex 770 X-Ray Machine

3-Main-Repair-Issues-With-The-Gendex-770-X-Ray-Machine ABCDentalworks

3 Main Repair Issues with the Gendex 770 X-Ray Machine

Quick visual guide for dentists & office managersDownload: 

1) Tube Head Failure

The tube head can develop oil leaks, filament burnout, or inconsistent radiation output as components age or after heavy use.

  • Symptoms: oily residue, overheating, erratic exposure.
  • Check: leakage, output consistency, warm-up behavior.
  • Fix: replace defective tube heads (OEM or refurbished); verify dose output.

2) Control Board & Power Supply Issues

Aging boards and power irregularities can lead to no power, errors, or unstable exposure timing.

  • Symptoms: unit won’t power on, intermittent errors, inconsistent exposure duration.
  • Check: fuses, connectors, capacitors, ground integrity.
  • Fix: repair or replace boards; add surge protection/line conditioning.

3) Arm Drift & Mechanical Wear

Support arms can lose tension and drift or sag, causing positioning problems and blurred images.

  • Symptoms: head won’t hold position; gradual drop after positioning.
  • Check: friction springs, bearings, joint lubrication.
  • Fix: tighten/replace springs, re-grease joints, adjust arm friction.

Why These Issues Matter

  • Unplanned downtime = lost appointments and revenue.
  • Safety concerns if a tube head leaks or is miscalibrated.
  • Staff frustration and longer chair time with drifting arms.

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