Hello, new forum member here. I have an Aiwa HS PX347 - Just wondering how to use AC/DC supply 3V unit with it. When I plug in with NO batteries, unit does not work. When I put in batteries - it operates, but as soon as I connect AC power supply, it stops. Can you run this walkman off ONLY the AC supply (to save using batteries?) ? Thanks to all for any advice.
Are you sure you have the right PSU ? Another possible problem is that the DC sockets often have a switch in them so that the batteries get disconnected when you plug in the PSU. If a contact is dirty or bent then it won't work off the PSU. I even had one unit where the centre pin was smaller than the socket so it just went up the middle without making contact !
I hear you - the PSU's a standard multi-voltage unit - have set it to 3V and am using the socket adapter with snug fit to DC socket - I haven't got manual for my PX 347 unit, so am not sure if i'm using it right. Sounds like I'll just have to persist. Cheers.
Tried again - nope - am being thick, have no idea how AC supply is meant to work with my walkman - if it doesn't provide power if/when you DON'T want to use batteries, what IS an AC supply actually for?????
It is supposed to power the unit as an alternative to batteries. It sounds to me as if something is faulty The problem with universal adaptors is that if you get the polarity wrong you might damage the unit.
Definately check polarity, I used to get Casio Keyboards cheap because they use the opposite polarity as 90% of the equipment out there. Sometimes there's a little +/- diagram at the units jack. I've got some Radio Shack Wall-Warts that have multi-voltage settings, and removable, different size plugs. I can rotate them to change the polarity, highly recommended for small electronics. The female plug on the units is something that seems to get damaged the most on little electronics, if you've ever watched kids, they yank as hard as possible at different angles making the plug useless. I'd open it up and check for broken prongs and solder joints.
Longman and Mister X - you are both dudes - you have completely sorted my issue - it WAS polarity. Now sorted. Thanks so much!
You are lucky nothing got damaged. For future reference most equipment has markings near the socket and the adaptor lead some kind of marking as well. If you want to get more into electronics a cheap test meter for example like this https://www.ebay.co.uk/itm/LCD-Digi...638975?hash=item3af8678cbf:g:Z4cAAOSwjMtcAW4C will allow you to check the output of the PSU, check cables, fuses, loudspeakers and many othe tasks
