All-in-One Computer LCD Panel: flex bonding failure. The factory bond between a flexible circuit and display glass loses reliable contact.

The distinguishing clue

Lines or dead sections change when the lid flexes but not when software changes.

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: Observe the symptom without pressing the glass and exclude the removable cable. If confirmed: Replace the panel because bonded edge circuits are not a durable field repair.

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

Related cause to rule out

When a fixed row, column or section is missing and does not change with software settings, also consider All-in-One Computer LCD Panel: internal open circuit 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.