Search found 3 matches

by supercaby
Dec 1st, '20, 01:59
Forum: Yocto² Hardware
Topic: Why does my Yocto²have no accent?
Replies: 1
Views: 13986

Why does my Yocto²have no accent?

Hi,everyone, Why does my Yocto² have no accent? Or, it looks like it's all accented. When I measure the bottom drum with an oscilloscope, I can see the following values: When a trigger occurs R152 has a pulse of about 4V The collector of q39 changed from 13V to 0V R155 is always around 13V The colle...
by supercaby
Nov 27th, '20, 07:12
Forum: Yocto² Hardware
Topic: Bassdrum has no sound unless I touch ic114 with my finger.
Replies: 3
Views: 13391

Re: Bassdrum has no sound unless I touch ic114 with my finge

In addition, I found that IC1 is a little hot, not very hot, but higher than other IC temperature.
by supercaby
Nov 26th, '20, 16:04
Forum: Yocto² Hardware
Topic: Bassdrum has no sound unless I touch ic114 with my finger.
Replies: 3
Views: 13391

Bassdrum has no sound unless I touch ic114 with my finger.

Hi everyone,
Recently, I encountered a strange problem.
My Bassdrum of Yocto² has no sound. But when I touch the 13pin of ic114 with my finger or tweezers, Bassdrum can make a sound, but there is no sound after a short time. If I touch again, it will make sound again.
So, what's the problem?