I was given this 2008 vintage set to "see if I can get it going again", I like a challenge.
Powering up gave a blue standby light and pressing the power (or channel-up) button dimmed the standby light but nothing else apart from a soft 'pop' from the loudspeakers after a few seconds. A second press of the standby button restored full brightness to the LED so I concluded there can't be much wrong.
Whipped the back off & couldn't see any obvious swollen cap's or burnt components (I checked the back of the PSU board too), so I powered it up again to check a few voltages.
The 12V supply came up when coming out of standby but the 24V rail lingered around 1.3V, even with the inverter board disconnected.
As an experiment, I tried 'jump-starting' it off an external 24V supply and after a flicker of the backlight the set came on, and continued running even after disconnecting the auxiliary supply. Even switching the set to standby and back on again, it continued OK. BUT disconnect the mains even for a few seconds and the fault returns.
Any pointers gratefully received... TIA.
Powering up gave a blue standby light and pressing the power (or channel-up) button dimmed the standby light but nothing else apart from a soft 'pop' from the loudspeakers after a few seconds. A second press of the standby button restored full brightness to the LED so I concluded there can't be much wrong.
Whipped the back off & couldn't see any obvious swollen cap's or burnt components (I checked the back of the PSU board too), so I powered it up again to check a few voltages.
The 12V supply came up when coming out of standby but the 24V rail lingered around 1.3V, even with the inverter board disconnected.
As an experiment, I tried 'jump-starting' it off an external 24V supply and after a flicker of the backlight the set came on, and continued running even after disconnecting the auxiliary supply. Even switching the set to standby and back on again, it continued OK. BUT disconnect the mains even for a few seconds and the fault returns.
Any pointers gratefully received... TIA.
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