Sony Universal Remote - Manual (Page 127)

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Troubleshooting
Check whether the (standby) indicator is flashing
in red.
When the (standby) indicator is flashing
The self-diagnosis function is activated.
1 Count how many times the (standby) indicator
flashes between each two second break.
For example, the indicator may flash three
times, go off for two seconds, then flash again
three times.
2 Press on the TV to turn it off, disconnect the
mains lead, and inform your dealer or Sony
service centre of how the indicator flashes
(number of flashes).
When the (standby) indicator is not flashing
1 Check the items in the tables below.
2 If the problem persists, have your TV serviced by
qualified service personnel.