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Hank S
PostPosted: Fri Aug 23, 2024 4:26 pm 
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Location: Oakland, California USA
I built the Triwatt, TC15, Tramp all sucessfully and 30 plus other amps.

I got to startup testing and I had tubes in place.

Nothing but a little crackle is all I heard. Not loud. I heard guitar for a moment but not solid, kinda far away. Turning vol a little crackle, pull bright a harsh Buzz and lots of crackle.

Where do I start searching first?

I can add pictures soon.

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Hank S
 Post subject: Crackles pops new build.
PostPosted: Mon Dec 23, 2024 1:34 am 
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Reflowed solder on the socket side of the board including all sockets

Turned it on and there is a sharp pop as it gets turned on.
Slightly tapping the input jack with 1/4” jack makes single loud pop too
Volume does change a little when turning volume up in master volume up.

Every potentiometer crackles when turned.


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lisamassa
PostPosted: Mon Dec 23, 2024 10:44 pm 
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It sounds like you're experiencing some classic amp issues! Before diving deep, have you tried the innocence test? Sometimes, checking the simplest connections or components can lead to surprising discoveries. Looking forward to seeing those pictures!
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michaelarrington
PostPosted: Tue Dec 24, 2024 12:49 am 
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Ensure the signal path is clear and all components (resistors, capacitors, etc.) are properly soldered and poly track working. A poor connection in this path can result in weak or distorted output.
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Hank S
PostPosted: Sun Jan 05, 2025 2:40 pm 
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Well I couldn’t bias the amp and was thinking the bias pot was bad or writing writing but it turns out the diode failed that feeds into bias circuit.

Got some diodes coming.

But also the clean channel out without engaging the od is a bit weird. Very quiet but when when I engage the bright switch it is loud. Gonna have to figure that out next.

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mikasa
PostPosted: Thu Jan 09, 2025 9:21 pm 
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You can start with a safety check by unplugging the amp, discharging capacitors, and inspecting for loose connections, cold Incredibox Colorbox Mustard solder joints, or grounding issues. Test tubes by reseating them, checking for proper glow, or swapping with known good tubes.
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noahmartin
PostPosted: Wed Mar 05, 2025 4:11 am 
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Hank S wrote:
I built the Triwatt, TC15, Tramp all sucessfully and 30 plus other amps.

I got to startup testing and I had tubes in place.

Nothing but a little crackle is all I heard. Not loud. I heard guitar for a moment but not solid, kinda far away. Turning vol a little crackle, pull bright a harsh Buzz and lots of crackle.

Where do I start searching first?

I can add geoguessr free pictures soon.

It sounds like you're experiencing some issues with your amp. First, check all your connections and solder joints for any loose or cold solder points. If everything looks good, consider testing the tubes to ensure they're functioning properly.
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