partyline : MS-704 service spare parts
See attached (solution dated Feb 2016) EoE (please check with sales if any part numbers have changed )
MS-704 Service Spare Parts Not all spare parts are listed Items marked by * require customer to waiver UL approval *T10551-2 Replacement MS Main Board *720307Z Replacement MS-704 Front Panel Assembly *400022Z Replacement 30V 65W Switching PSU *520040Z Replacement PSU Fuse (Up to 4 May Be Required) *240165Z Replacement Keycap White*240076Z Replacement Knob (Grey) *710710Z Replacement MS/SB 704 Front Panel *510157Z Replacement Pushbutton Switch with Yellow/Blue LED*510158Z Replacement MS Switch Pushbutton with Bright Red LED (Call Button)*510159Z Replacement MS Switch Pushbutton with Green LED (Listen Button)*510160Z Replacement Button Switch with Yellow LED*510161Z Replacement Pushbutton Switch with Blue LED*740043 Replacement Microphone Socket Assembly *280068 Replacement Hex Nut *280231 Replacement Inter Lock Washer *250572 Replacement Bushing for Microphone