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Electronics => Repair => Topic started by: irobot on November 04, 2024, 05:42:52 am

Title: Yamaha RX-V573 Power Output Stage Repair
Post by: irobot on November 04, 2024, 05:42:52 am

Yamaha RX-V573 Home Theater Unit

Dislike these kind of problems. Replaced outputs Q2058, 2059, 2044, 2045.
Triple checked every transistor, diode, resistor, and capacitor against other working channels. Everything OK, all measurements spot on.
Powered up, and *poof*. Q2058 and 2059 gone. All pins BCE dead shorted.

I've done many, many of these before. 45+ years experience.

What am I missing?

Title: Re: Yamaha RX-V573 Power Output Stage Repair
Post by: Jeff eelcr on November 04, 2024, 08:06:57 pm

Yamaha, check for open/ changed value resistors in strange places also have had other parts fail after checking them.
Jeff