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. Standard steel heads develop grooves in them with regular use, and the high end can drop out as the tape rises and falls within this groove.We change all of them in every Pioneer RT deck that we get in of this series. Pioneer didn’t use the 2SC458s, but 2SC1344s, that all need to be replaced in order for the deck not to distort or go dead on one or both channels intermittently. These early RT decks were plagued with bad transistors just like many of the Akais were with the 2SC 458 transistors.A good choice for a no frills 10” deck.That means the deck was used a lot! Fortunately the heads are steel, and if not too badly worn, the heads can be lapped or replaced for continued use of the deck. Reliable to the point where we’ve seen a number of Pioneer decks come in with badly worn heads.A good sounding deck overall, if there is no or little head wear.Reliable motors in general, the drive belt for the capstan motor and the counter tend to fall apart, but they are easy to replace. 3 motor deck, direct drive reel motors. #Panasonic 740 reel to reel tapedeck seriesStrengths and weaknesses of the early RT series decks are as follows: Not too many units were sold, however we see one in once a year for servicing. Despite RCA input and output jacks, the 1050 aimed at the semi-pro market, generally owned by Teac/Tascam, Otari and Fostex. The RT-1050 was the Pioneer ½ track model, and high speed, with 7 ½ and 15 IPS. Similar in styling to the 1011, the RT1020 offered a 4 channel playback head for quadraphonic sound. The RT1020 was the next step up to the RT-1011. The RT-1011 was the entry level 10” deck, with 2 speeds, 3 ¾ and 7 ½, and standard 4 track recording and playback, for consumer tapes. The far more popular models were later reel to reels, the RT-1020, RT-1011, and RT-1050, all 10” models. Model T-6600 – (credit to the Worthpoint website for the image) When working however, with good heads, you can get a 20Khz frequency response at 7 ½ IPS. We’ve scrapped the last two we had in here, as they couldn’t be reliable long-term. As with many late 1960s decks, these early Pioneer models can be finicky, with all sorts of braking and transport problems. These are the T-115, the T-6600 auto reverse model, and the QT-74, an auto reverse stereo/single direction quadrophonic deck. While most of the Pioneer models were sold in the mid 1970s, there are some earlier 7” machines in single direction and auto reverse models. The 1970s Pioneer SX series were built like tanks, and the high power models command a top dollar. That aside, their tube receivers and amplifiers are in high demand, and go for a premium if they are in great condition. N0 question that they made receivers long before they got into the RTR business. There’s not a whole bunch online about when Pioneer started making reel to reel tape decks.
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