HDMI amplifier

​The main reason we have stopped repairing amplifiers with HDMI inputs is their highly complex digital design. Unlike an analog audio amplifier, the HDMI section involves high-speed digital signals, DSPs, microcontrollers, and tightly interlinked software/firmware, which makes accurately isolating faults extremely difficult.

Another major reason is the unavailability of spare parts in the market. HDMI ICs, controller chips, and original HDMI boards are often not available for purchase. In such cases, even if used or so-called compatible parts are used, long-term reliability cannot be guaranteed.

Some HDMI amplifiers also come with service manuals that contain incorrect or incomplete technical details. Because of this, signal tracing, voltage reference checks, and firmware-related diagnostics can lead to wrong assumptions, making it difficult to achieve a 100% accurate repair.

Another common issue we face is that even after repairing the HDMI section, faults tend to reappear within a short period. After the initial repair, problems such as handshake errors, no audio/no video, or intermittent HDMI detection often resurface quickly. This negatively affects both repair quality and customer trust.

In addition, Sri Lanka’s heat and high humidity severely affect the multilayer PCBs and fine-pitch SMD tracks used in HDMI amplifiers. Issues such as moisture absorption, corrosion, and solder-joint degradation frequently lead to PCB damage and recurring faults within a short time.

The trust our customers place in us is based on the principle of “repair once and use reliably for a long time.” Since maintaining that standard with HDMI-input amplifiers is practically difficult, we have decided to discontinue HDMI amplifier repair services as a fair decision for both our customers and ourselves 🙏❤️