hello!
i got a samsung C530 series, 37 inch, with a AUO display. came 2 days before in my service shop completely dead, no led, no life signs.
this is one is very strange, the owner stated that this was caused immediately after a power surge, but i dont see any faults in the psu. tbh, its a bit strange to me, because when i disconnect the psu <=> mainboard connector the backlight goes on. when inserted back goes off. that means, if i just connect the AC power to the psu i have all the voltages 5V, 13V, 24V there. Maybe this is nothing extraordinary for this kind of TV, its just how it should work. I think i can rule this out.
The mainboard.
Normally, I got only the 5V from the psu flowing around. There is also 3.3V in the standby sections. This includes the touch panel section.
If i bypass the PS_ON trigger, i also got the other 5V and 13V from the PSU, so i have all other voltages in the mainboard, the 2,5V the 1,8V etc. the heatsink of the cpu gets warm too.
Still no indicator led sign.
The touch panel buttons.
This is something which i would be happy to rule out, but i dont know how.
I have a D400 32" with a broken screen. I managed to hook the D400 touch panel and to my surprise, the led lit! The buttons didnt work actually.
It would have been simple if i swapped the panels but they cant go vice versa because of different type of connectors.
what i want to know, is if there is a way to turn on the tv without the touch panel. or another way to tell that the expensive mainboard is ok.
thanks in advance.
i got a samsung C530 series, 37 inch, with a AUO display. came 2 days before in my service shop completely dead, no led, no life signs.
this is one is very strange, the owner stated that this was caused immediately after a power surge, but i dont see any faults in the psu. tbh, its a bit strange to me, because when i disconnect the psu <=> mainboard connector the backlight goes on. when inserted back goes off. that means, if i just connect the AC power to the psu i have all the voltages 5V, 13V, 24V there. Maybe this is nothing extraordinary for this kind of TV, its just how it should work. I think i can rule this out.
The mainboard.
Normally, I got only the 5V from the psu flowing around. There is also 3.3V in the standby sections. This includes the touch panel section.
If i bypass the PS_ON trigger, i also got the other 5V and 13V from the PSU, so i have all other voltages in the mainboard, the 2,5V the 1,8V etc. the heatsink of the cpu gets warm too.
Still no indicator led sign.
The touch panel buttons.
This is something which i would be happy to rule out, but i dont know how.
I have a D400 32" with a broken screen. I managed to hook the D400 touch panel and to my surprise, the led lit! The buttons didnt work actually.
It would have been simple if i swapped the panels but they cant go vice versa because of different type of connectors.
what i want to know, is if there is a way to turn on the tv without the touch panel. or another way to tell that the expensive mainboard is ok.
thanks in advance.
Attached Files
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). and the touch area there is not working, maybe if I am able to touch the most right bottom in a maybe 1 square millimeter area it works. also generally if I touch the normal place where the start stop icon is, the weight + and - areas register so there is a touch calibration problem in that area. All icons maybe 60% of the left side register correctly in their respective size. Siemens service recommends replacing the control pcb and screen (nearly...
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