Nordmende TV N3202LBD doesn't switch on from standby.
Standby LED turns from red to blue, but LCD panel doesn't light.
SMPS output "5VSB" (standby supply) is OK (=5V).
SMPS control input "ON/OFF" is 0V on standby and 2.2V on operation mode, but doesn't switch main PS on (12V and 24V).
Then I disconnected "ON/OFF" line from control PCB to power supply.
On controller side it is now 4.8V in operation mode. I'm not sure 2.2V under load is enough to switch the main PS on.
(PS: it's enough!)
Maybe "ON/OFF" input is somehow shorted and pulls 4.8V from controller PCB down to 2.2V?On optical inspection I could not find any suspicious components.
So I must find schematics of this SMPS "JSK4180-024/A/B"...