LT002 Coil whine

Coil whine has gotten worse, it’s loud enough to cause ear ringing after the unit is turned off. I think it’s coming from the power supply board. Can the power supply board part number be provided?

Thanks in advance

Hi there,
We sincerely apologize for the inconvenience this has caused you.

Could you please send a copy of the original purchase receipt and a video demonstrating the problem with the device via email to We will have dedicated customer service to solve your problem.

If you require any further assistance, feel free to contact us.