Thanks Jim... here the result of desoldering C20
ic8 pin 1? 2.75 (the manual on page 126 says 2.46)
ic8 pin 7? 2.74 (the manual on page 126 says 2.48)
ic9 pin 1 5.02 (the manual on page 127 says 4.84)
ic9 pin 7 2.79 (the manual on page 127 says 2.44)
To complete these infos I will says the power supply was 14.64
Back to you !
IK1TTD Gianpi