[vcf-midatlantic] Personal IRIS PSU repair

Hey, all. Just thought I'd reach out and bother everyone to see if there's anyone else out there who's dealt with a dead Personal IRIS PSU. Apparently they pretty much all go eventually, but I haven't been able to find anything about what the common failure modes are. Hoping there's someone with some thoughts or experience, because I'm massively a novice when it comes to power supply diagnosis.