I wanted to submit this case to you: at the beginning it would turn on normally with the button but with a black screen, I thought of the bios since the external monitor I had connected did not remain black, I found a file in the bios section, I reprogrammed it and when I went to turn on the display also turned on, so I turned off, I reassembled everything and when I go to try just by connecting the AC connector the three LEDs light up: amber, blue and white of the on / off button, the display remains black , if I turn it off from the button it turns off after 5 sec but if I turn it on it no longer turns on, I have to disconnect the AC connector and reconnect it then it turns on again, I made several tests, if I connect only the battery it turns on as in the previous case and turns off but it does not turn on again, with the battery connected if I connect the AC connector it does not turn on but the battery charges, if with the AC connected I insert the battery it does not turn on, in all cases once turned off it does not turn on again from the button, I noticed an that when the voltages on U18, bios chip are turned on, they are very low 0.7 / 1v, while when I turn it off with the button they return to normal, I changed the chip but it behaves in the same way, I can't understand what happened
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toshiba sat dablidmb8e0 power
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Re: toshiba sat dablidmb8e0 power
practically I noticed that the 3vpcu on U18 is missing so the flash is not powered, this voltage should go out of PQ10 if I saw well on the diagram, in practice the gate signal on this mosfet that comes out of the kbc is missing, I don't understand if this is defective or something else is missing
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Re: toshiba sat dablidmb8e0 power
Originally posted by poweron View Postpractically I noticed that the 3vpcu on U18 is missing so the flash is not powered, this voltage should go out of PQ10 if I saw well on the diagram, in practice the gate signal on this mosfet that comes out of the kbc is missing, I don't understand if this is defective or something else is missingLast edited by SMDFlea; 07-31-2020, 04:43 AM.
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Re: toshiba sat dablidmb8e0 power
yes,this one https://www.badcaps.net/forum/showthread.php?t=52617 .The part numbers on the board will not match all parts in the schematic. The proper schematic isn`t available as i mentioned before https://www.badcaps.net/forum/showthread.php?t=85618
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Re: toshiba sat dablidmb8e0 power
I programmed U18 with this file and now it always turns on by itself by connecting ac dapter or battery, in practice this happens: by connecting the battery it turns on by itself, the led power on and power button, pressing power button turns off after 5 sec, if I connect the AC adapter only the amber LED of the charge lights up and the battery is charged, but if I want to switch on it doesn't light up anymore, I have to disconnect both the battery and the AC and then reconnecting one of the two it switches on again without pressing the power button, so the difference compared to other bios is that with this it turns off
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