>If you have an old amp with tubes, try this - just very lightly tap the side >of the tube with a pencil, and hear what sounds like a Chinese gong being >struck.
When I went to the University of Waterloo, in the mid 1970's, I had a professor who did his masters at MIT. They had a vacuum tube computer that had all its tubes mounted on both walls of what was basically a 6-metre corridor. Somebody would have to go in everyday and run the erasor end of a pencil across all the tubes. If the lights shook, the tube touched had to be replaced or re-seated. - Too busy driving to stop for gas! ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
