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Some users choose to bypass the faulty portion of the HYS3C210-CS by powering the amplifier with a dedicated 48V power supply. Conclusion
Check diodes and capacitors, particularly near the transformer, for signs of failure.
The is a specialized power supply module, often identified as a critical component in audio equipment repair, particularly for Harman Kardon subwoofer systems. This module is responsible for supplying the necessary voltages to drive the subwoofer’s amplifier board.
An STB (Standby) line, which in some configurations exhibits approximately 17V relative to ground when the unit is active, allowing for remote turn-on and low-power idle states. Common Failure Points and Troubleshooting
Often supplies -7v, GND, and +7v for control circuits. Common Issues and Diagnostics
HYS3C210-CS refers to a specific power supply board used in high-end audio equipment, most notably subwoofers from brands like Harman Kardon (e.g., HKTS 200, HKTS 210) and Key Specifications & Function
The subwoofer does not turn on at all. No light on the front panel.
Harman/JBL may list this board under a substitute part number, such as TPS220200-0407 .
Like many high-power SMPS boards, the HYS3C210-CS is prone to specific hardware failures over time due to heat and electrical stress:
: Electrolytic capacitors near the high-voltage section often dry out or bulge, leading to a loss of the 48V rail while the 7V logic rail remains functional.
: 48V DC (used to power the main LFMA 00690 amplifier board).
Based on cross-referencing similar component families (e.g., TPS, MAX, or RT series), we can infer robust specifications for the HYS3C210-CS. These are aggregated from technical whitepapers and parametric search engines.