EWS modded Arion Stereo Chorus keeps killing BBD’s

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EWS modded Arion Stereo Chorus keeps killing BBD’s

Postby Rambozo96 » 12 May 2019, 16:17

Hello all I seem to be having an issue with a EWS Arion Chorus that I replaced the Bellings BL3207 in and it worked fine for a few days and now it doesn’t emit a chorus effect. I was wondering if I should check the power supply to see if nothing was up with it or where ever else I should inspect.


Thanks in advance, Taylor
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Re: EWS modded Arion Stereo Chorus keeps killing BBD’s

Postby Dirk_Hendrik » 13 May 2019, 12:49

I fail to see the connection between "replaced the BBD's" and "keeps killing BBD's.

- Why did you replace the BBD in the first place?
- Do you still hava a clock going to the BBD?
- Are supply voltages to the BBD correct?
- is there signal going to the BBD?
- Is there modulated signal on the output of the BBD?

to name a few things "to inspect"
Sorry. Plain out of planes.

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Re: EWS modded Arion Stereo Chorus keeps killing BBD’s

Postby Rambozo96 » 13 May 2019, 15:13

The reason why I replaced the BL3207 was the unit originally arrived to me in non functioning shape where it would only emit a uneffected clean tone. So I replaced like for like and a few days later it was only emitting a clean uneffected sound so I have suspicions that something is wrong elsewhere in the pedal. As to what I’m not sure outside of checking out the power supply for any suspect voltages or components. I would guess if I wanted to see if the BL3102 clock was still operational I would need an oscilloscope? I would also suppose I would need an audio probe to make sure that the 3207 is still getting signal? I am sorry if these come off as annoying noob questions but I never worked on many chorus pedals or any time based effects that operate on BBD’s.
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