Background
Not every electronics job is straightforward. Some require a deeper level of technical knowledge, careful planning, and a clear understanding of compliance obligations — especially when the end-use environment has no tolerance for error.
This case study documents one such project: the successful adaptation of a US-manufactured audio system for permanent installation in a high-security facility in New Zealand. At the client’s request, the identity of the facility remains confidential. What we can share is the nature of the challenges, how our team approached them, and what the outcome demonstrates about the kind of work Advanced Computers is trusted to deliver.
The Client’s Problem
The client had sourced a professional-grade audio system from the United States. Before it could be used, it needed to meet three non-negotiable requirements set by the facility’s security and compliance team.
1. Voltage incompatibility
The US system was designed to operate on 110V power, while New Zealand’s standard supply runs at 220–240V. Plugging the unit in without modification would have caused immediate and irreparable damage. A safe, permanent power solution was required — not a workaround.
2. Wireless connectivity prohibition
The facility operates under strict security protocols that prohibit all wireless signals within its environment. This includes Wi-Fi, Bluetooth, and any other radio-frequency transmission. The audio system’s built-in Bluetooth module, while standard for consumer electronics, was entirely incompatible with these requirements.
3. Restricted external input points
USB ports present a known security risk in high-security environments — they can be used to introduce unauthorised devices, transfer data, or compromise a system. The facility required all such ports to be removed entirely.
Failing to address any one of these three issues would have prevented the system from being approved for use. The client needed a technician with the skills to handle all three — and the professionalism to document the work clearly.
Our Solution
Advanced Computers’ qualified electronics repair technicians assessed the unit thoroughly before work began. A detailed scope of modifications was agreed upon with the client, with clear timelines and transparent pricing established upfront.
Power Conversion
A step-down transformer was professionally installed to convert the facility’s 220V New Zealand supply to the 110V required by the US-built system. This wasn’t a plug-in adapter — it was a properly integrated, permanently installed solution designed for continuous, reliable operation. Safety and longevity were the priorities, not convenience.
Bluetooth Module Deactivation
The built-in Bluetooth module was identified, isolated, and disabled at the hardware level. To ensure full auditability — important in any compliance-driven environment — the module was clearly labelled “Not in use.” This gives the facility’s security team visible, physical confirmation that the wireless function has been addressed, which is often a requirement during security audits.
USB Port Removal
All external USB ports were physically removed from the unit. This goes beyond simply blocking or disabling the ports in software — physical removal eliminates the vulnerability entirely and provides the kind of verifiable, tamper-evident result that high-security environments demand.
The Result
The modified system passed compliance review and was successfully installed within the facility. The project was completed on schedule and came in within the agreed budget. The client confirmed full satisfaction with both the quality of the work and the professionalism of the process.
What This Project Demonstrates
Cases like this one highlight capabilities that go well beyond typical electronics repair.
Technical depth
Voltage conversion, hardware-level wireless disabling, and physical port removal each require hands-on electronics expertise. These aren’t tasks that can be safely or reliably handled without a qualified technician who understands what they’re working with at a component level.
Compliance awareness
Working within a security-governed environment requires more than technical skill — it requires understanding why the requirements exist, and ensuring the solution genuinely satisfies them, not just on paper but in practice. Labelling deactivated components, for example, is a small detail that carries significant weight during a security audit.
Discretion and professionalism
Clients who operate in sensitive environments need to trust the people they bring in. From the initial assessment through to final sign-off, this project was handled with the care and confidentiality the situation required.
Custom solutions, not off-the-shelf fixes
Not every problem has a standard answer. Advanced Computers has been solving non-standard electronics challenges for Auckland clients since 1998 — across home audio, commercial equipment, specialist devices, and everything in between.
Could We Help You?
If you have an electronics device that needs more than a standard repair — whether that’s a voltage conversion, a custom modification, a compliance requirement, or something else entirely — our team is equipped to assess it and advise you honestly.
Advanced Computers services all major brands and device types from our repair centres in Penrose (Auckland Central) and Rosedale (North Shore), both open six days a week. We also offer return courier repair for clients outside Auckland. All hardware repair work is backed by our 3-month guarantee — if a repair fails within three months, we fix it again for free.