Hello everyone,
I'm working on repairing a Music Store Professional GO! SUB 18A bass subwoofer, and I need some help troubleshooting an issue with the power amplifier board. The board uses an IR2153 driver and originally had two SLW20N50C MOSFETs. Unfortunately, these MOSFETs burned out. I replaced them with two TK20J60W MOSFETs; however, these also failed almost immediately.
Here are some details:
- SLW20N50C (original):
- Rated for 500 V
- Typical RDS(ON): 0.21 Ω
- Continuous Drain Current: 20 A at 25°C (13 A at 100°C)
- Pulsed Drain Current: 80 A
- Avalanche
...
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