The coils are not set in epoxy. They plug in to sockets, just like relays. They are meant to be removable and ( if you have any electronics background) you can check the primary and secondary coil resistance...just like any other electronic coil. Also, you can easily see the oil level through the plastic casing. By the way, the oil is very light and when you flip it over , it takes only a few seconds to flow back. They all appear to be about 3/4 full. To get to the coils, there is a plastic cover to remove(six screws) no glue, no epoxy, no gasket. Granted , a repaired unit may not last another 100 K but it will get you home.. For the sceptics, I will post a link to pics of a disassembled DI cassette. The individual coils are the only removable parts, the rest is firmly set in epoxy and probably not worth the effort.
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18 years ago