Unidentified component A107 (Teac AG-V3050)

Thread Starter


Joined Oct 5, 2011
I have a noise in the left chanel of the TEAC AG-V3050 amplifier . I can't identify a component : A107
Is like a transistor . It has a plastic package and It is not exactly a TO92 package , it has two plane faces ( oneof both is bigger than the other ).
Can you help me?
Regards, Rafael


Joined Feb 11, 2008
It's a 2SA107 germanium PNP transistor. Those are a common failure that causes crackling noise, and can be found by either heating or cooling the 2SA transistors while the amp is running.

2SA107 = ge PNP 40MHz
Common replacements are;
AF124 to AF127, or AF200