This TV appears just black when power is applied.
The 12v PSU output is 12v and 24V- all good... the TOSLINK led is on. PSU on signal is 3,3v.
A long press, and the TV switches on sometimes displaying "Philips" for less than 1/3second - then dies.
The 12V output from the main power supply is now 8.6v and the 24v output is zero.
I have found the service manual:
https://tel-spb.ru/files/philips_chassis_tpm14-1e_la.rarI tried to start it up with all load 12v + 24v connector disconnected - and the 12v rail is then 8.66v.
When the ON signal is left floating, it's 0v.
How can I know what the PSU is supposed to provide when it has no load? right now I am not sure whatever a floating PS_ON is the problem - or not..
is the 8.6v an fault, or just stnadby/poweroff voltage?
...and why does it die (apparently because the power_on signal goes low? - or does it go low due to power loss (back to 8.6v?)
- how to troubleshoot further?