I love how rugged this amplifier is with its large bandwidth. I'm a newbie so I've just researched alternative transistors and tried a few in place of the old ones. It hasn't worked. I'm wondering if anyone can provide any insight. I'm so new to electronics I probably missed a connection or misplaced a resistor. Hardly know what those things do, I'm willing to pay a little for someone to help me with my projects if anyone wants to hear me out over PM. I'll list my replacements chosen. Can anyone point me in the right direction or give me a little motivation? Thanks.
~Replacement Parts~
Motorola MPSL01 -- 2N5551
RCA 1A16 -- MJ21193 : MJ21193 : MJE15033 : MJL1302A : MJL1302A
RCA 1A15 -- 2N3442G : 2N5672 : 2N6274 : 2N6275 : 2N6352 : 2N6353
Motorola 2N5877 -- 2N6686 : 2N6687 : 2N6688
https://www.passdiy.com/project/amplifiers/construct-a-class-a-amplifier
View attachment 218562
~Replacement Parts~
Motorola MPSL01 -- 2N5551
RCA 1A16 -- MJ21193 : MJ21193 : MJE15033 : MJL1302A : MJL1302A
RCA 1A15 -- 2N3442G : 2N5672 : 2N6274 : 2N6275 : 2N6352 : 2N6353
Motorola 2N5877 -- 2N6686 : 2N6687 : 2N6688
https://www.passdiy.com/project/amplifiers/construct-a-class-a-amplifier
View attachment 218562