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Amp is cutting out for no apparent reason

I have a Technics SU-Z600, 20+ years old. Both it and the original tuner have always worked fine. For the past couple months, the amp tends to cut out after it is on for a short time. Often it will come on again, or not, within an hour or 2. I'm certain it's the amp as it occurs no matter which component is playing. I realize I have gotten my money out of it many times over, but wondering if there is a simple fix that will allow me to keep this piece of my history.

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Hi daytondoug.
The amp will be suffering from dry solder joint. Is very common for this to occur,caused by heat stressed soldering about power components in the output and power regulator stages. This something you could attend to yourself, but only if you have good soldering skills. If not, then it would not be an expensive repair to have a good Tech to repair for you. Best bet is to find a mate to do the work for you if you are not up to soldering. Or get some junk boards, a decent soldering iron(Goot and Weller make some low cost ones that will do) remember that your work will be limited by your tools and skill. Good Luck
regards
robotek

Posted on Nov 09, 2008

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