Hypex at your service
My amplifier contains partial Hypex OEM products, how do I get service?
Contact the original manufacturer of your application, if they cannot service your device, you could consider contacting a legal repair service, even if you have bought a product with Hypex inside you cannot buy OEM parts, a legal audio repair business can.
https://www.hypex.nl/FAQ-Hypex/OEM-account/My-amplifier-contains-partial-Hypex-OEM-products-how-do-I-get-service