HiFi – Random, Hopefully Useful, stuff

This is my page of random, but hopefully interesting, useful, or both —
articles, how-tos and other documents all related to audio and HiFi.  Enjoy. — Grant

How to repair an ONKYO T-9090 that has a permanent Mute (no sound):

ONKYO T-9090 permanent mute – no sound – howtofix2

Does your Agilent Scope do this too?  Solution shoudl be here soon: