The known problem FT-102 is a relay failure.
Old relays in your radio need replacement? - this set is necessary for you.
High quality relays brand RELPOL, Helishun and HWE.
10 relays full analog of the original.
1 relay brand for RL02 on RF board - for installation of this relay it is necessary to drill new holes or to make an adapter (more information - you watch the Internet).