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Hi Mike,</div>
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Thanks a lot for your reply. I did try that, and found that removing modules did sometimes make the problem go away, but it didn't matter which modules were removed. For example, say 5 modules were plugged in. Removing any of the 5, leaving 4 left, may make
the problem go away, but it didn't matter which one was removed. The supply is perfectly capable of powering all 5 however, because a quick flick off-on of the power switch provides power without issue.</div>
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Cheers,</div>
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Jason<br>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b> Synth-diy <synth-diy-bounces@synth-diy.org> on behalf of Mike Beauchamp <list@mikebeauchamp.com><br>
<b>Sent:</b> Thursday, October 31, 2019 6:31 PM<br>
<b>To:</b> synth-diy@synth-diy.org <synth-diy@synth-diy.org><br>
<b>Subject:</b> Re: [sdiy] Linear PSU Power Sequencing Issue</font>
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> <br>
> The issue is that sometimes when I power up a unit with modules plugged <br>
> in, the +12V rail does not power up properly (the indicator LED does not <br>
> light), but if I switch the power off for a short time and back on <br>
> before the caps have discharged, the +12V rails powers up fine.<br>
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<br>
Maybe disconnect one module only at a time (leaving all the others <br>
connected) and power it up to see if one of the modules is causing the <br>
problem.<br>
<br>
Mike<br>
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