All-in-One Computer LCD Panel: internal open circuit. A microscopic conductor inside the display path separates and stops carrying one part of the signal.

The distinguishing clue

A fixed row, column or section is missing and does not change with software settings.

Checks before an assessment

Note whether startup sounds or other normal activity continue behind the faulty picture. An external display is a useful comparison only if this model supports video output.

Stop point: All-in-one computers can contain exposed mains-power sections and retained charge.

Workshop confirmation and repair

Device-level check: Test external video where supported and separate panel behaviour from the internal graphics and power boards.

Targeted check: Compare screenshots and external output, then isolate the panel from the upstream signal path. If confirmed: Replace the confirmed panel or flex assembly rather than applying pressure to it.

Repair boundary: Replace the panel only after its model, voltage, connector and mounting are matched.

Related cause to rule out

When lines or dead sections change when the lid flexes but not when software changes, also consider All-in-One Computer LCD Panel: flex bonding failure before choosing a repair.

Checks after the work

After repair or replacement, check native resolution, brightness, colour, cold start and extended operation.

For an AEPC repair assessment in East Auckland, provide the exact model and observed clue. Call 027 908 8880 before visiting the Burswood workshop.