What the thread found

• A single horizontal line on the display typically indicates a horizontal sync problem.
• Leaving the monitor powered on while displaying a bright single line can cause permanent phosphor burn damage to the tube.
• A line that bright may have already created a vertical burn mark on the tube that persists even after repair.
• Replacement tubes for older monitors are expensive, but complete used monitor units may be available at reasonable cost.
• These older monitors can operate reliably for many years if handled carefully and maintained properly.

Depends on

• The actual cause was never definitively confirmed in the discussion.
• The monitor had been exposed to rough handling before the issue was observed.
• No specific troubleshooting steps were attempted or documented in the thread.
• The decision to repair versus replace was not resolved.

Gear in this thread

Master Seriescatalog

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