Question about Sansui Audio Players & Recorders

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Sansui synthesizer tuner T-909. Tuner keeps on going off-station and making a horrific static/hissing/white noise. Have taken a look inside, and replaced the crumbling leads into the pre-amp. There is some rust on the inside of the tuner cover (where the paint wasn't applied properly during manufacture). It normally sits underneath the amp in the stereo cabinet (open-fronted, no doors). When I place it on the floor, away from the amp, it definitely cuts out less often, but still does it. Is this interference from the amp, or some kind of moisture build-up from being on the shelf? I can't see anything else wrong inside - but I know nothing about tuners, just looking for obvious faults...

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  • Kiaora Sep 19, 2008

    Thanks for the response - very helpful and suitably low tech for my level of expertise!

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It sounds like there is a transistor that is breaking down because of heat. With the unit placed away from the amp, there is less heat. This unit needs a quick overhaul. If a tech can reproduce the problem, the use of a "freeze" spray will make finding the problem transistor easy. Figure on $5-$10 in parts plus the local labor rate for the total repair.

Dan

Posted on Sep 12, 2008

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