![]() Pioneer made four silver (and the rare black) rack mount reel to reel models, the RT-701, a single direction 7” deck, the RT707 auto-reverse version, and the RT901 andRT-909, the single and auto reverse version accepting up to 10” reels. Removing this switch PC board isn’t a lot of fun, but can be done, and some strategic lubrication will usually free up all of the function buttons. On occasion, the locking mechanism of the function switches will corrode and lock up, or the stop button will be engaged permanently.These are specific switches, and you’ll likely need to find replacements on eBay, as we’ve found no switch substitutes. This is due to the relatively high current run through these switches, that arc, pit, and fail over time. We’ve had the odd microswitch fail behind the function buttons, specifically the ‘play’ button. ![]() We lap many Pioneer heads with excellent results.
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