You can contact HRO store -- for their service department.
Are you avoiding the Yaesu USA service center in Cypress (other US amateurs would be grateful for such a close mfg. service center)
For customer service, technical support or parts, please call 714-827-7600.
To send in your radio for repair, please pack it thoroughly, using the original packing placed inside an additional box, if possible. Ship via UPS, preferably, and insure it for the full replacement value. The shipping address is:
Vertex Standard USA
Attn: Amateur Repair
10900 Walker Street
Cypress, CA 90630
In your cover letter accompanying the product, please describe the problem(s) you are experiencing in as much detail as possible. Include your daytime telephone number, return shipping address (not a P.O. Box number), and your e-mail address, in case we cannot reach you via telephone.
To follow up on status of a repair, you may also send e-mail to firstname.lastname@example.org