Investigator determined that there was no relationship found between the returned device and the reported incident; consequently, investigator was unable reproduce and confirms the reported overheating failure mode.Product passed functional and high speed testing (100-10,000 rpms) for 5 minutes each in forward, reverse and oscillate directions.Unit passed functional tests on the dyonics power, dii and dii eip test control units with and without footswitch.Current draw was average for this product and overheating did not occur during functional testing.The complaint was not confirmed and the root cause could not be determined since the reported malfunction could not be duplicated during the product evaluation process.A review of the device history records showed there were no indications to suggest that the product did not meet manufacturing specification or would not be able to perform as intended.
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