I have a POWERHOUSE HORIZON 1208. and channel 1 has a lot of 'white noise,'worse when advancing the 'gain control. I have tried replacing the op-amp BA4560 the one nearest the Mic input channel 1. My problem is I cannot identify the 2 transistors at the Mic gain control, think they are PNP low noise devices BF A126B? but not found anywhere when searching from Google. The other transistors are easily available: type BC549C. Is there anyone who would know what type of Transistors these are or an equivalent?
studiomaster powerhouse Horizon schematics
Oct 12, 2013
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