help
Its work fine. I connect a fuse 1A before speaker. I listen a music with high level, after that the fuses blow-out 2 channel.
after that,I change volume control from cheap one to alps. and change transistor in pre-amp from 2sc458 to 2sc1815
(I checked it same B C E same type).
my diy lm3886 amplifier has v- out to speaker.
Thank god that I test it with very very cheap speaker.
maybe some things short in circuit when I change volume control.
now I check everythings in circuit is ok.
What to do?
Its work fine. I connect a fuse 1A before speaker. I listen a music with high level, after that the fuses blow-out 2 channel.
after that,I change volume control from cheap one to alps. and change transistor in pre-amp from 2sc458 to 2sc1815
(I checked it same B C E same type).
my diy lm3886 amplifier has v- out to speaker.
Thank god that I test it with very very cheap speaker.
maybe some things short in circuit when I change volume control.
now I check everythings in circuit is ok.
What to do?
It's -42v at the out put.
only 1 channel, other channel is ok.
I think the ic ok.
It happen before! when I test the second amp after finish.
It has dc from output. And after that it normally. I don't understand why it malfuntion.
(this amp have problem is 1st amp).
Last thing I will do is change the ic.
Because its hard to remove heatsink.
only 1 channel, other channel is ok.
I think the ic ok.
It happen before! when I test the second amp after finish.
It has dc from output. And after that it normally. I don't understand why it malfuntion.
(this amp have problem is 1st amp).
Last thing I will do is change the ic.
Because its hard to remove heatsink.
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