Josiah Garcia Posted June 19 Report Share Posted June 19 i recently bought an mz-909 minidisc recorder off of ebay. it was listed as untested so i bought it cuz they usually work but this oke isnt powering on. ive put a charged battery in it and ive plugged it in. theres no acid in the battery slot and the plug seems clean. i was wondering if you guys had any ideas. Quote Link to comment Share on other sites More sharing options...
kgallen Posted June 20 Report Share Posted June 20 First test would be to try with an external Sony power supply. Also try with a primary cell not a rechargeable. Quote Link to comment Share on other sites More sharing options...
BearBoy Posted June 20 Report Share Posted June 20 Was about to ask whether it was an MZ-E909 or MZ-R909 but just noticed you said "recorder" and @Richard has changed the title to reflect that it's an R909? Are you using an AA battery in the external battery case or a gumstick battery in the unit itself. If the latter, have you tried the former (or vice versa)? Are you connecting the DC PSU directly to the unit itself or via a charging cradle? If it is an E909, do you know if the charging cradle is functional as you can't connect a DC PSU directly to the unit? Quote Link to comment Share on other sites More sharing options...
sfbp Posted June 20 Report Share Posted June 20 I'd be inclined to get one of the "sidecar" battery cases, and put a real Alkali (non-rechargeable) battery in that, before you panic. The lugs (that contact the positive battery terminal) on the locking tag/door for the "prism"/gumstick battery is one of the weak points on most of these devices. The other end (there's a sharp point that is supposed to connected to the negative end of the NiMH battery by pressure) is the second. Frequently scratching the bottom of the (NiMH) battery with a sharp knife will wake it up. Quote Link to comment Share on other sites More sharing options...
Richard Posted June 21 Report Share Posted June 21 23 hours ago, BearBoy said: Was about to ask whether it was an MZ-E909 or MZ-R909 but just noticed you said "recorder" and @Richard has changed the title to reflect that it's an R909? I renamed it purely on a hunch, but also becuase I'm a bit OCD about spelling and capitalisation of topic titles 😆 Quote Link to comment Share on other sites More sharing options...
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