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PostPosted: Sun Aug 19, 2018 8:39 pm 
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I just finished a classic phaser (script) build. It switches on, I get signal and LED. I hear a slight modulation, but no phase effect. I've tried adjusting the internal trim pot but there has been no change.
Advice?ImageImageImageImage

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PostPosted: Mon Aug 20, 2018 12:03 am 
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When you adjust the trim pot, does it seem to sweep the filter at all, sort of like a wah pedal, or change the ‘voice’ of the sound?

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PostPosted: Mon Aug 20, 2018 6:25 am 
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Morgan wrote:
When you adjust the trim pot, does it seem to sweep the filter at all, sort of like a wah pedal, or change the ‘voice’ of the sound?
It doesn't. No beeps, sweeps or creeps.

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PostPosted: Mon Aug 20, 2018 7:19 am 
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mrdavenixon wrote:
It doesn't. No beeps, sweeps or creeps.


Did you see if it was jammed?

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PostPosted: Mon Aug 20, 2018 8:09 am 
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PostPosted: Mon Aug 20, 2018 8:51 am 
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Raspberry! Lol! Glad someone got that!
spin wrote:
mrdavenixon wrote:
It doesn't. No beeps, sweeps or creeps.


Did you see if it was jammed?


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PostPosted: Mon Aug 20, 2018 9:29 am 
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You're getting dry signal through, so we know the hardware is working correctly and the chips are getting the power they need, but it sounds like the wet signal path is either blocked by a bad solder joint or the bias voltage going to the modulation section is not working right.

First step is to reflow your solder joints (be sure to remove all chips from their sockets before doing this): http://byocelectronics.com/board/viewtopic.php?f=9&t=52188

If you are able to take DC voltage readings, check to see if the voltage fluctuates at R17. The rate of fluctuation should change with the rate pot.

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PostPosted: Sat Sep 08, 2018 1:29 pm 
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Sorry about the delay in response. I've been busy and just got to revisit this today.

I reflowed and cleaned up my flux and it's working! It's very cool. I'm thinking of doing the script/block switch mod. Either way, I'll be ruining some Van Halen songs later on.

Thanks!

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PostPosted: Sat Sep 08, 2018 1:57 pm 
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mrdavenixon wrote:
....Either way, I'll be ruining some Van Halen songs later on.

:lol: :lol: :lol:

Glad to hear you got it sorted out. Enjoy the ruination!

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PostPosted: Sat Sep 08, 2018 3:18 pm 
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Well done!

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