I have a Schiit Lyr here which makes some problems. It makes a quite loud hum. Sounds like a typical 50Hz hum. With headphones with high sensitivity it's annoying. But even with a HD-650 which is not very sensitiv it's hearable. Could it be the unregulated (my guess because I can see no voltage...

I have a defective SRM-323A. The transformer is defective. Can anyone measure the voltages at the secondary side of the transformer? I want to order a custom transformer for replacement and need the exact voltages.