After removing IC503, I'm able to power it on normally. Terminal app shows both SMPS modules are working fine. I'll order a few ACT08s and test the TX/RX when they arrive. And I'm going to build the low-voltage drop linear regulator for QMX.
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Really wish I could work WPX SSB and share with the group my experiences, but not in the mood anymore...
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Thanks Stan and Ludwig again for your help!
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