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Placid 2.0.1 help please

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J

jrling

Member
Joined 2010
I have a Placid 2.0.1 built by someone else.

I have followed the set-up instructions in the manual to the letter with VR1 at 100 ohms and VR2 at 10Kohms with no load connected.

The Placid is fed by a 15VA 230V transformer outputting 8.8VAC.

When I turn on the power, there is no smoke (!) but also neither LED lights up. (I have checked that they are mounted in the correct direction of the flat side as per silk screen).

I can adjust the output voltage to the desired 5.0V with a VR2 value of 20.78 Kohm. But the R8 voltage is 0.0mV whatever value for VR1.

Be grateful for any advice as to what might be causing the LEDs not to light up, before I dare to attach a load to it.

Thank you
 
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