I keep on getting people referring to U tube instruction videos. Most all of them are wrong in some way or another. The other thing is they jump over 90% of the work that needs to be done, use the wrong terms and are just totally incompetent on a Bench. Teac would never hire them. Things to watch out for- Sine wave comes from a I Phone- no real Technician would ever use this piece of junk. They have real equipment. They use a DVM to measure audio signals- This is totally wrong item to use for this and is inaccurate. They put oil where grease goes and grease where oil goes. They can not even determine the need in what they are working on. They take face plates off decks when it is totally unnecessary. Why take all this off possibly damaging parts when the real Technicians never do? You are better off calling me or Russ Bachmann in NJ to find out how to do something- NOT all technicians are so free with their advice as they are too busy. If I have 200 units sitting here waiting to be worked on what makes me want to sit and talk to a hobby person to fix his deck. Sometimes I do but there is a limit to how much I can help as some of this requires one on one training- there is no other way. I am working with some people now to expand the possible person to send units to. Gerhard is in FL and he is doing rather well with all the equipment I refer to him. Dean in Canada is overcoming his problems with cassette decks, Mike in MN is setting up his bench and getting ready to do some work. Find a correct Technician and save money as all these local shops are only there to charge you a fee without doing any real work! I have seen it done here in Chicago.