My A77 has been repaired. Sony replaced the Shutter Unit, Mirror Box and what they described as the “Protective Cover” No charge was listed for these parts. The only charge was for labour plus tax.
Other items listed included “Exposure Meter, Speeds Checked, adjusted and repaired as necessary, Auto Focus Mechanism Checked and Tested, Computer test carried out and checked to standard”
No feedback on what caused the original problem was given. As there has been no specific mention of the sensor being replaced I assume the problem must have been elsewhere.
I had hoped to have the camera available for a recent trip to the USA but as the start of the trip came closer and there seemed no chance of it being repaired in time I had to buy a S/H A77 body.