MusicBringer Posted March 23, 2012 Report Share Posted March 23, 2012 Hello Folks, I still use my MZ-NH900. Trouble is I cannot switch it off. By that I mean when I need to turn it off the Cancel button no longer turns the machine off. Any ideas please. Thanks, Link to remind you what they look like: http://www.amazon.co.uk/Sony-MZ-NH900-Silver-Hi-MiniDisc-Walkman/dp/B0001ZN768/ref=cm_cr_pr_product_top Quote Link to comment Share on other sites More sharing options...
slugbahr Posted March 23, 2012 Report Share Posted March 23, 2012 Turning it off idea: select 'play 1-track' mode? Quote Link to comment Share on other sites More sharing options...
MusicBringer Posted March 23, 2012 Author Report Share Posted March 23, 2012 Turning it off idea: select 'play 1-track' mode? Blimey what an idea to come up with!! You must have brains you never used yet, ha ha. Umm, I have to dig out the manual to find out how to select: 'play 1-track' mode'. Thanks slugbahr Quote Link to comment Share on other sites More sharing options...
sfbp Posted March 24, 2012 Report Share Posted March 24, 2012 Pressing cancel only supposed to set the machine charging from power adapter. Normally should turn off as soon as doing nothing for a minute or two. If you mean that it hangs, writing the TOC for example, then it needs adjusting (or worst case, the head replacing). Quote Link to comment Share on other sites More sharing options...
MusicBringer Posted March 26, 2012 Author Report Share Posted March 26, 2012 Normally should turn off as soon as doing nothing for a minute or two. Yeah, but it doesn't If you mean that it hangs, writing the TOC for example, then it needs adjusting (or worst case, the head replacing). No. It doesn't hang. It simply continues to play. Nothing I press will stop the play and no button will shut it down. Quote Link to comment Share on other sites More sharing options...
sfbp Posted March 26, 2012 Report Share Posted March 26, 2012 If that includes using a remote, then you have got a weird one. Are you sure you didn't leave it in Service Mode or summat? If it works fine with the remote, you have got a "power-to-the-buttons" problem. This is sometimes fixed by cleaning contacts, but more usually by adjusting the overall power to the unit. Certainly for my NH900 the screen was v dim when I first got it. If you can do it, it's the very first item in the Power Adjust sequence, I think. Quote Link to comment Share on other sites More sharing options...
MusicBringer Posted March 27, 2012 Author Report Share Posted March 27, 2012 Hello sfbp, I don't usually use the remote - but I managed to find one - and it works with the remote. Hooray! so thanks for that. As to the cleaning contacts and Power Adjust sequence I am sorry but I do not know about that. Where can I find some guidance so I can understand what to do please... Quote Link to comment Share on other sites More sharing options...
sfbp Posted March 27, 2012 Report Share Posted March 27, 2012 This might be a project for Jim Hoggarth who lives in Bradford. He has a very reasonable charge for servicing. My experience (and memory, don't kill me if I got it wrong) was it's the very first (or one of the ones near the top) of the adjustments on page 18 of the service manual which you can find here or at minidisc.org. If your screen on the machine is very dim (maybe you got used to it!!!) that's another indication I may be correct. Quote Link to comment Share on other sites More sharing options...
AVITWeb Posted May 17, 2014 Report Share Posted May 17, 2014 Resurrecting an old one here, but I just purchased an NH900 from Ebay, The unit is in excellent shape and seems well cared for, but I am having a similar issue. Sometimes the stop button registers skip track, sometimes stop, and other times nothing at all. Were you ever able to get it fixed? Quote Link to comment Share on other sites More sharing options...
sfbp Posted May 17, 2014 Report Share Posted May 17, 2014 The "command" read by CPU from the buttons are interpreted by changes in resistance. If the contacts are bad, or if the power supply is not properly delivering the right voltage to the mainboard, this is the kind of issue you will experience. It needs cleaning and servicing. And in the interim (until you can arrange or perform that yourself), try to get a sidecar battery holder and use an real alkaline AA in it (not a rechargeable). Also you may have better luck using the unit with mains charger plugged in (I understand that may not suit your use case). Quote Link to comment Share on other sites More sharing options...
AVITWeb Posted May 17, 2014 Report Share Posted May 17, 2014 Thank you Inquisitor I appreciate the information! I am hoping at some point soon to contact Jim Hoggarth (Hoping he really is "back") and do repairs on my primary unit so I might ask him about it then. I have used compressed air to blow out the unit and will be relying heavily on the Pause button and the remote. The mains charger doesn't bother me at all because I primarily use these at work when at my desk. Thanks again! Quote Link to comment Share on other sites More sharing options...
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