Vintage Electronic Scores.

Onkyo's cassette decks were "pretty OK" and generally very comely aesthetically speaking
So, yeah, post photos.

Lots of ways to do it. You can copy and paste most images (as long as they're not too large), or you can upload one directly, if you wish. Just click that little "image" icon and you can "choose files" to upload. This forum has many operational eccentricities (bless its heart!) but it will accept fairly large image files (including animated GIFs)





voila

You said TA-2055, right?



The big issue (bugbear) with old cassette decks is the rubber drive belts. Many of them tend to turn to sticky black goo -- some do this after relatively few years (25 or so... I said relatively!.)

I hate working on cassette decks -- but they can usually be reanimated if the need arises and if one is motivated and not too easily discouraged by tearing into small, complex mechanisms.

Hifiengine probably has the OM and maybe the SM for the 2055, too. I haven't looked yet.
EDIT: They have the SM: https://www.hifiengine.com/manual_library/onkyo/ta-2055.shtml

I am assuming that the TA-2055 uses belt drive(s) -- I don't really know this particular deck, so I don't know. If it works as acquired, don't complain! I would recommend cleaning and (if possible) demagnetizing the heads. Isopropyl alcohol (not rubbing alcohol, which usually has some lubricant in it as well as diluted iPrOH) and Q-tips works fine for the former. Those little electronic, cassette-shaped head demagnetizers work pretty well for the latter, and are very easy to use (and hard to screw up the use of). A proper head demagnetizer is arguably a better choice, but has to be used properly (according to the instructions!) or one runs the risk of magnetizing the head and/or portions of the tape path/transport mechanism!




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source: https://www.hifiengine.com/hfe_downloads/index.php?onkyo/onkyo_high_fidelity_1982-83_de.pdf