Re: Advanced amp troubleshooting
Quote:
Originally posted by saj888
IN most cases only one channel is defective, you could use the working ch as a reference. or there is more than one amp of the same type in the shop. You could also make notes of the readings of a good or new amp.
I have, a very long time ago. began to develop my own method of troubleshooting, simply because I could never find a book that teaches advanced techniques. Another thing I want to try is a NON CONTACT INFRARED THERMOMETER LASER TEMPERATURE tester.
I could use this to check the temperature of a component. Something like a magic wand. Just scanning the components. Would that be a dream come true. You just pass a 'magic wand' over a circuit and find the defective components.
Let me know what you guys think.
Knowledge is power.
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That's an excellent point, about using one channel to compare to another. That was also an extremely-effective technique for certain oscilloscope repairs.
Making repair and measurement notes for certain equipment models is a also good idea. I toyed with making videotapes and/or digital photographs of scope traces for various points, for certain common models of test equipment that I used to refurbish/repair and resell.
I, too, have always wanted to get one of those non-contact thermometers. Mouser.com carries several models. Home Depot stores, here, have some type of those, too, although I don't know the specs. (Or, maybe a cylinder of liquid nitrogen, with a regulator and a small "air mix and spray" wand attachment, would be cheaper than the usual "freeze spray" cans. :-)
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