modessitt
Volunteer: Encyclopedia Submission Moderator
I'm working on a Burgertime cocktail at work, and I got everything working so far, but the sound is screwy.
When it first came in, I got no sound. Fiddling with the volume pot gave me some loud static, so I figure that means the amp is working fine. So I recapped the sound board, matching what was in there by value. Now I have sound, but i also have a hissing, squealing noise that gets worse as you turn it up. You can't turn it down enough to just hear sounds without the squealing.
I thought perhaps I might have replaced some caps that should have been tantulum with electrolytics, but the original caps didn't say they were tants (three 47uF 16v's looked silver metal).
So, I went to arcarc.xmission.com to check the manual, but the manual has the D333 version soundboard, and this is the B333 version sound board. All of the parts have different designators (for example - the three 47uf's are C54-56 on the B333 and C22-24 on the D333). There are some other layout differences, and one might have more or less parts than the other.
Of a more unhelpful note, it just lists the caps as 47uf. It doesn't list a voltage, or whether it's electrolytic, tantulum, or whatever. It does this with all of the caps in question.
The owner said that his volume kept getting lower and lower over time until it finally couldn't be heard.
Anyone have any insight for me? I'm thinking about putting the old caps back in one at a time to see if I can make the problem go away. That would at least tell me if one of them is the issue....
When it first came in, I got no sound. Fiddling with the volume pot gave me some loud static, so I figure that means the amp is working fine. So I recapped the sound board, matching what was in there by value. Now I have sound, but i also have a hissing, squealing noise that gets worse as you turn it up. You can't turn it down enough to just hear sounds without the squealing.
I thought perhaps I might have replaced some caps that should have been tantulum with electrolytics, but the original caps didn't say they were tants (three 47uF 16v's looked silver metal).
So, I went to arcarc.xmission.com to check the manual, but the manual has the D333 version soundboard, and this is the B333 version sound board. All of the parts have different designators (for example - the three 47uf's are C54-56 on the B333 and C22-24 on the D333). There are some other layout differences, and one might have more or less parts than the other.
Of a more unhelpful note, it just lists the caps as 47uf. It doesn't list a voltage, or whether it's electrolytic, tantulum, or whatever. It does this with all of the caps in question.
The owner said that his volume kept getting lower and lower over time until it finally couldn't be heard.
Anyone have any insight for me? I'm thinking about putting the old caps back in one at a time to see if I can make the problem go away. That would at least tell me if one of them is the issue....

