Upon tracing the schematic, the following components are the most common points of failure:
Enthusiasts often upload reverse-engineered schematics. Use search tags: wlx896b, portable cd schematic, sunplus cd schematic. Wlx-896b Schematic
The WLX-896B common configuration uses two RD70HVF1 MOSFETs in push-pull: Upon tracing the schematic, the following components are
The drains combine at T2, then pass through a directional coupler (two coupled microstrip lines) before the output LPF. The drains combine at T2, then pass through
Thermal note: The WLX-896B runs hot. If your schematic does not show thermal tracking resistors (e.g., a 100Ω PTC in the bias divider), add one. Otherwise, thermal runaway will destroy the finals.
Look for labels like VCC_3V3, CD_LDO, LASER_ON, MUTE. These are the "wires" that connect different pages.