Yamaha MG24/14FX

Twist · 08-11-2009, 06:29 PM

I'm trying to find out what the transistors are on the front end of the pre amps. The SMD code is "CGB". And yes I'm pretty certain that's the code.
It's printed very clear. But I could be wrong. I've checked serveral code books on line but no luck.

Enzo · 08-12-2009, 01:37 AM

Closest I can find is MG16/6FX in my files. I will look further for verification. The channel inputs there, if it is similar, have four transistors per channel. They are all NPN, but for whatever reason of two differing types. the two toward the + rail and whose collectors connect directly to the op amp inputs are 2SC3324. the other two, the ones closer to the neg rail are 2SC2412.

Assuming some family resemblance between your model and this, I hope that helps.

08-11-2009, 06:29 PM	#1
Twist Senior Member Join Date: Nov 2007 Location: Springdale, Arkansas Posts: 273	Yamaha MG24/14FX I'm trying to find out what the transistors are on the front end of the pre amps. The SMD code is "CGB". And yes I'm pretty certain that's the code. It's printed very clear. But I could be wrong. I've checked serveral code books on line but no luck.

08-12-2009, 01:37 AM	#2
Enzo Senior Member Join Date: May 2006 Location: Lansing, Michigan, USA Posts: 10,366	Closest I can find is MG16/6FX in my files. I will look further for verification. The channel inputs there, if it is similar, have four transistors per channel. They are all NPN, but for whatever reason of two differing types. the two toward the + rail and whose collectors connect directly to the op amp inputs are 2SC3324. the other two, the ones closer to the neg rail are 2SC2412. Assuming some family resemblance between your model and this, I hope that helps. __________________ Education is what you're left with after you have forgotten what you have learned.

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