Inviato da iPhone
Il giorno 29 nov 2019, alle ore 23:13, Daniel Santos <daniel.dlds@xxxxxxxxx>
ha scritto:
I have a spectrum+ issue 4S. The Samsung one
(https://spectrumforeveryone.com/wp-content/uploads/2017/01/Issue-4S.jpg).
When powered on, it shows several vertical black and white bars on the screen.
In have been following this page
(https://www.worldofspectrum.org/SpectrumRepairGuide/) in trying to diagnose
the problem.
So far I have measured the voltage on the power brick output to the machine
(15 V), the voltage regulator (12V on the left leg, 5V on the right), and the
resistances on pins of the IC6 (Lower left : 2.7 K, upper left : 150k, lower
right : 930 and upper right 2 (Ohms)).
I don't know if these resistance values are ok, but from a video I watched on
you tube (https://www.youtube.com/watch?v=IzgCmldm2H4) proportionally they
seem correct.
What tests can I do now ?
