Lastic Posted May 1, 2020 Share Posted May 1, 2020 (edited) Good morning everybody I had a spare XC12 still factory sealed with the sticker laying around which didn't work, looked like a belt issue since the motor was still spinning. I took it apart and it had 2 issues, the flywheel had fallen apart, as in the 2 plastic pieces which press the metal ring together were seperated, which I fixed (did have to dissassemble a lot to reach it) and the belt was worn. Tape loading works again but I got a humming sound as soon as I have pressed Play , even with a tape inserted, no tape inserted, or pressing STOP. To elimate the possibility of a failing 800XE, PSU, I tried on different PSU's, 2 different 130XE's and even a different XC12 with the same tape. Looks like the culprit is the gooey stuff on the screws of both heads, which fell off due to being dried up and unscrewing the screws to remove the PCB. If I play the tape and keep a screwdriver pressed down on top of these screws , the humming disappears. My 2 questions, what is this stuff ? Locktite ? Altough it doesn't bond metal to metal. Would plastic washers help ? Another question/concern, whilst looking at 3 different dissassembled XC12's (the faulty one before repair and 2 working ones) I noticed that this one -the one I repaired- doesn't have a shield on the back of the PCB ? Since it rests against plastic I guess it shouldn't pose an issue but just asking since I found it a bit bizarre that the non-factory sealed ones had it installed and this one didn't . And for those wondering why all the hassle , I'm planning to upgrade this repaired one with the Turbo Blizzard PCB upgrade by Zaxon https://www.sellmyretro.com/offer/details/40076 and I'm a sucker for tapes, still got all my audio mixtapes from way back . Edited May 1, 2020 by Lastic 1 Quote Link to comment Share on other sites More sharing options...
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