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Technics AV Control Reciever SA-DX 950 Manual

Good day All,

Kindly assist with loacating the above (Technics AV Control Reciever SA-DX 950 Manual). I purchased this receiver about 8-9 years ago and recetenly receives a
F70 error message, followed by "switch off power".

Will be greatful for assistance.

Thanks!

Lance