Voltage Check Issue

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Vorex

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Jan 30, 2013, 11:51:34 PM1/30/13
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Built a 1.4u and not getting the proper voltage on VCC or VIN when powered via the transformer.

Transformer outputs ~27.2 VAC
VCC Voltage 0.350
VIN Voltage 0
Resistance Between PTC (top leg) and D1 (left leg) is .5 Ohms

Using a Fluke 12B the Diode Test mode outputs a reading of for D1 1.571

Without the transformer connected and using a USB cable VIN and VCC voltage is correct

Any guidance would be appreciated.
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