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1 My D-4 is not working
The unit is not currently working. I do not have the original battery pack or a 9V power adapter required for this model. I only have a 12V charger, which I did not use to test it to avoid potential damage. I opened the unit and found no visible issues inside—no corrosion, loose wires, or obvious broken components.
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@ad123re if you "do not have the original battery pack or a 9V power adapter required" How did you test it? Do notuse anything other then 9V with the right polarity or it will burn out your Sony.
by oldturkey03