Hi all,
I have a Flatron w2241s no power which I got from a friend, so I don't know exactly what symptoms it had before it went dead. The schematic I fond is here:
https://cdn.badcaps-static.com/pdfs/...06480b561d.pdf
The unit has no power, and no LED is lit. I changed all electrolytic caps, and I powered the unit. The unit didn't turned on, and I noticed the SMPS transformer is faintly ticking. I tought a short and started to investigate. Indeed the 22v line is shorted. As soon as I separated the power source from the inverter by removing a jumper, the SMPS started working and I had correct +5v, +27v and 22v between 5v line and 27v line.
Now, I never touched an CFL inverter in my life, and Im just learning, so I ask for advice what could cause the short in the inverter.
Another question I have is if you can check the inverter mosfets in the circuit.
With thanks, Dan
P.S I only have a 4 1/2 DMM , ESR meter and soldering station as tools.
I have a Flatron w2241s no power which I got from a friend, so I don't know exactly what symptoms it had before it went dead. The schematic I fond is here:
https://cdn.badcaps-static.com/pdfs/...06480b561d.pdf
The unit has no power, and no LED is lit. I changed all electrolytic caps, and I powered the unit. The unit didn't turned on, and I noticed the SMPS transformer is faintly ticking. I tought a short and started to investigate. Indeed the 22v line is shorted. As soon as I separated the power source from the inverter by removing a jumper, the SMPS started working and I had correct +5v, +27v and 22v between 5v line and 27v line.
Now, I never touched an CFL inverter in my life, and Im just learning, so I ask for advice what could cause the short in the inverter.
Another question I have is if you can check the inverter mosfets in the circuit.
With thanks, Dan
P.S I only have a 4 1/2 DMM , ESR meter and soldering station as tools.