[TenTec] omni c tx mixer board

[ROLAND HOWELL]

 Hi AllI have a problem with my Orion C, low RF output, typically 30 watts only, no ALC light, traced the fault to a tant cap on the tx mixer board, the fitted board number is 90857, the diagram shows 80713 which has a different layout, once changed the power came back, however it ( the board) has failed again, back to 30 watts RF.
Has anybody got a copy of the circuit diagram of the fitted board?
Whilst I am on has anybody got a diagram and spare end covers ( plastic ) for the 260 power supply 
Snowy
G0HZE