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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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AC Adapter Question
I have a device (a Roland TR-505 drum machine) that works only on batteries. When I insert the AC adapter (the original, which obviously worked at one time) the device shuts down. The AC adapter appears to be converting the correct voltage at the plug. I don't know much about testing circuit boards. Any ideas as to why this pattern is occurring? Any leads on what I might do to figure out how to repair device without spending a lot of money. It's an old device but it does it's job well and suits my needs when it is working correctly.
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