Page 1 of 1

SOLVED: kick/snare:short decay / ground problem

Posted: Apr 18th, '16, 19:42
by Loons
Hi Yocto DIYers,

I'm having four little problems:

- the first is that my kick has a short decay even at max. In consequence the pitch is not as low as it should...
Does anybody know which resistor to change?

- the second is a short decay for the snare. Does anybody know which resistor to change?

I hope it's not a transistor problem... How can i test it?

-the third is that i needed to adjust r127 to get a 130mV on the Noise section. Is it normal or does i need to change the transistor?
May be it could have effect on my snare...

- the fourth is that the sequencer doesn't accept Roll function in midi sync mode even after I have uploaded the new firmware.
Any idea?

Thanks.

SOLVED: i changer some resistor, and a cap for the snare,

but now hum/ground/interference problem only on the master track, and only when in the metal case....
anybody got idea?

Re: Bass drum and snare, too short decay

Posted: Apr 19th, '16, 09:31
by Loons
Hi,

I precise a bit:

I higly suspect the HFE of the transistor: what is a good Hfe for the different transistor of the kick, snare and noise?

I will change it.

And for the noise, i'm going to ahieve the Page 15 , service manual modifications.

THX