TD Terminal Power Fluctuation Diagnostic Report - Solar... | terminalfaults.org

Technical Background:

EMV/NFC terminals require stable voltage (typically 5V or 12V DC) to operate correctly. Power surges can exceed the terminal's voltage tolerance, damaging internal components like the power supply or logic board. External power adapters can also degrade over time, leading to voltage drops. ESD (electrostatic discharge) is more prevalent in dry environments (winter) and can disrupt sensitive electronic circuits.

Symptoms:

The terminal exhibits unstable power behaviour, potentially including intermittent shutdowns, reboots, or display flickering. This is based on reports of power fluctuations.

Possible Causes:

Power surge from the mains electricity supply exceeding the terminal's surge protection capacity.
Degradation or failure of the terminal's external power adapter, resulting in unstable or insufficient voltage.
Loose or damaged power cable connections causing intermittent power supply.
Electrostatic discharge (ESD) events affecting the terminal's internal circuitry.
Voltage fluctuations in the building's electrical grid.
Accumulation of dust or debris within the terminal's external power connector, causing poor contact.

Solution:

1

Perform Safe Handling: Unplug the terminal from the power outlet.
2

Visually inspect the power cable for any signs of damage (fraying, cuts, or exposed wires).
3

Verify the power outlet is functioning correctly using a different device.
4

Inspect the power adapter for physical damage or overheating.
5

Clean the terminal's external power connector with compressed air to remove any dust or debris. Do NOT use liquids.
6

If available, test the terminal with a known-good, compatible power adapter.
7

If the problem persists, contact TD support for terminal replacement or further diagnostics.

Safety Warning:

Electrical shock hazard exists if the terminal or power adapter is damaged. Do NOT attempt to open the terminal casing. PCI-PTS devices have anti-tamper mechanisms that will be triggered upon opening, rendering the device permanently unusable. Do NOT use the terminal if it shows signs of damage or overheating. Ensure the power outlet is properly grounded. 'Safe Handling' - unplug the terminal from the power outlet before inspection or cleaning.

Prevention:

Use a surge protector to protect the terminal from power surges. Ensure the power cable is properly connected and free from strain. Regularly clean the terminal's exterior with a dry cloth to prevent dust accumulation. Implement anti-static measures, such as using anti-static mats, especially during dry winter months. Schedule periodic visual inspections of power cables and adapters.

Expert Tip:

Many terminal power issues stem from the barrel connector on the power adapter side working loose. A small amount of electrical contact cleaner (applied SPARINGLY to a swab, NOT sprayed) can sometimes improve the connection, but replacement of the power supply is the preferred option. Check the voltage and amperage of the power supply if a replacement is needed to ensure it is compatible.

Frequently Asked Questions

•Is the power adapter the correct voltage and amperage for this terminal model?

Refer to the terminal's specifications or the original power adapter's label for the correct voltage and amperage.

•Has the terminal been exposed to excessive heat or humidity?

Extreme temperatures and humidity can damage electronic components and shorten the terminal's lifespan.

•Are other electronic devices in the area experiencing similar power issues?

If yes, the problem may be with the building's electrical system and should be investigated by a qualified electrician.

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•Is the power adapter the correct voltage and amperage for this terminal model?

•Has the terminal been exposed to excessive heat or humidity?

•Are other electronic devices in the area experiencing similar power issues?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: