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I have a Sony MZ-N707 which hasn't been used for quite a number of years. In fact it had very little usage from new before it was consigned to a cupboard for storage (yes, the battery was removed beforehand - I've been caught by leaky cells before!) as my job changed and was no longer travelling for business. Unfortunately it is now dead, not working when powered by any of the internal battery, external charger, charger stand or USB cable. It doesn't try to spin-up if I go to play a disc. Well, it isn't completely dead - the LCD display (either internal or on the remote control) at first glance appears to remain blank but it does actually show all characters and segments at the same time in a very dim light grey for a few seconds, before going off. So something is happening internally but not much. Maybe the display is enabled but receives no data to display. Before I breakout the oscilloscope and service manual to explore the inner workings, is this a known fault mode that is easily fixed or is it likely to be beyond redemption? I hope that it proves to be repairable as it is in immaculate condition, comes with all the accessories, multilingual manuals and original box and it would be a shame not to be able to save it. Hoping for some positive responses from contributors to this forum. Thanks in anticipation.