Hello,
I have the above monitor which turns off its backlight 2 seconds after powering on. The screen still holds all the content, only the backlight is off.
Now before that (even today) the monitor had the problem to turn its backlight off after around 30 minutes. Before switching off entirely the backlight changed brightness (like once a second).
When switching off and back on the monitor would stay on for a while before repeatedly showing the behaviour described above.
Now I changed the five main caps (low esr, but no name brand) on the power board (470uF, 35V) and resoldered the transformer taps on the inverter board. Furthermore I measured the secondary windings of the transformers, all reading between 4.6 and 4.7 kOhm.
Trying to use the monitor now it switched the backlight off after 2 seconds. I thought it could be the no name caps I used and reinstalled the old caps. Still the screen goes black after two seconds. What could have gone wrong? Should I need to install brand name caps?
I hope that the tubes are not faulty because they ran today for half an hour or even more.
Thanks in advance!
I have the above monitor which turns off its backlight 2 seconds after powering on. The screen still holds all the content, only the backlight is off.
Now before that (even today) the monitor had the problem to turn its backlight off after around 30 minutes. Before switching off entirely the backlight changed brightness (like once a second).
When switching off and back on the monitor would stay on for a while before repeatedly showing the behaviour described above.
Now I changed the five main caps (low esr, but no name brand) on the power board (470uF, 35V) and resoldered the transformer taps on the inverter board. Furthermore I measured the secondary windings of the transformers, all reading between 4.6 and 4.7 kOhm.
Trying to use the monitor now it switched the backlight off after 2 seconds. I thought it could be the no name caps I used and reinstalled the old caps. Still the screen goes black after two seconds. What could have gone wrong? Should I need to install brand name caps?
I hope that the tubes are not faulty because they ran today for half an hour or even more.
Thanks in advance!
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