AfroGT Posted February 21, 2003 Report Share Posted February 21, 2003 I've had my Aiwa AM-F70 portable unit for 3+ years. I really enjoyed it when commuting in to work via the train. Since my start-up closed I hadn't used it for over a year. I put a MD deck in my car and have a home recorder also. Dug it out a couple of days ago and noticed I didn't have the AC power supply. Must have left it at work, which no longer exists. Bought a replacement at Radio Shack and it powers the unit fine but won't recharge the NiCad battery. Looks like I need to buy an Aiwa AC adapter, model AC-D401. Found another thread not on this site that said standard adapters won't charge the batteries. This confirmed my suspicion. Where can I locate a replacement adapter? Aiwa's website is useless. Thanks in advance. Quote Link to comment Share on other sites More sharing options...
Mystyler Posted February 21, 2003 Report Share Posted February 21, 2003 I don't use my Aiwa's adapter, and it charges fine...? Perhaps try some service centres and see if they can order a replacement for you. Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted February 21, 2003 Report Share Posted February 21, 2003 So what adapter are you using mystyler? Quote Link to comment Share on other sites More sharing options...
Mystyler Posted February 22, 2003 Report Share Posted February 22, 2003 I was using, I suppose what you'd call a "Radio Shack" equivalent until it died, and now I'm using my Panasonic's adapter. Quote Link to comment Share on other sites More sharing options...
AfroGT Posted February 25, 2003 Author Report Share Posted February 25, 2003 Found a parts supplier online and ordered the OEM adapter. Sure enough it started charging my battery right away. Not sure why this thing is different than a Radio Shack adapter but it works now . Got mine here http://www.andrewselectronics.com/ Quote Link to comment Share on other sites More sharing options...
MDX-400 Posted March 4, 2003 Report Share Posted March 4, 2003 I know this is a bit late, but you can take a look at this thread for why the adapter probably would not charge the battery. It is because the voltage output when the universal(?) was set at 4.5V was not actually enough real voltage for the unit. I.e. The unit thinks it is still on batteries because the real voltage of the Aiwa adapter is slightly higher than 4.5V ("unloaded" that is). If you read this thread you will see that I used two identically rated Panasonic PCDP adapters (4.5V) on my AM-F70 and found only one would charge it although both would run the unit. Here is the thread... http://forums.minidisc.org/viewtopic.php?t...t=51&highlight= Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted March 4, 2003 Report Share Posted March 4, 2003 Thanks for you reply. Next time the batteries run down I'll try switching the voltage on the Radio Shack adapter up to 6V to see if it charges the battery. If not, I'll just return it. I may actually keep the adapter and use it as a backup one one of my other portable devices. It has 6 or 7 swappable plugs so it could come in handy down the road. Quote Link to comment Share on other sites More sharing options...
MDX-400 Posted March 5, 2003 Report Share Posted March 5, 2003 Thanks for you reply. Next time the batteries run down I'll try switching the voltage on the Radio Shack adapter up to 6V to see if it charges the battery. If not, I'll just return it. I may actually keep the adapter and use it as a backup one one of my other portable devices. It has 6 or 7 swappable plugs so it could come in handy down the road.No, no WAIT! The 6V might be too high for the MD. It probably won't be but just be careful... The Panasonic one I use that does charge the battery fine puts out 5.61V with no load... However the actual "4.5V" DC Aiwa adapter (which happened to be a 100V AC Japanese one in my case) actually put out about 8V when on the 120V AC North American outlet. Even using that adapter didn't do any harm to the MD. I just decided to find something with a little less voltage to prevent the unlikely case that battery would get too much charge. If you can measure the no load voltage of that RS adapter on the 6V setting and it is less than 8V then you should be fine I think, but just be careful. I doubt you could do any damage at the 6V setting but I would check what it actually is before going ahead, myself. As for keeping the adapter, I'd recommend it. You never know when you are going to need an adapter and for what you might need it for. It is always handy to have a universal one lying around just in case you ever need to use one. Roland M. Quote Link to comment Share on other sites More sharing options...
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