Subject: Ungar 9900 Soldering Iron Base Station
Complaint: Dead
Diagnosis: Secondary on power transformer is open
Reason: Shit tier QA at factory didn't notice a wire strand bridged across the power transformer output.
Hard to believe they missed that, it's one of the strands from the power transformer's wire. I can't fix it as-is, it will need a replacement transformer or an external transformer. Can't use DC because this particular model uses a light dimmer-like circuit (Triac) to control the heater of the iron.
Subject: Ungar 9900 Soldering Iron Base Station
Complaint: Dead
Diagnosis: Secondary on power transformer is open
Reason: Shit tier QA at factory didn't notice a wire strand bridged across the power transformer output.
Hard to believe they missed that, it's one of the strands from the power transformer's wire. I can't fix it as-is, it will need a replacement transformer or an external transformer. Can't use DC because this particular model uses a light dimmer-like circuit (Triac) to control the heater of the iron.
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