l300 rsmrst alwats enable not turning on .

[highpulse]

well got this l300 from another store , mentioning computer turn on somethimes or somethimes it simple just down.

starting making some test , and found that RSMRST is always present on pin 25 KBC , it should only give 3.3 volts in the on off moment.
this happen when she doesnt turn on .
when she turn on , rsmrst is 0 and only got to 3.3 once i press the on off , as it should , reflashed bios and replaced KBC , still persist the anormality , this is a nec tokin board , before all i tought was nec problem so replace , but same issu e-

opinions are welcome , MBR is a 6050A2170201-mb-a03

[highpulse]

Re: l300 rsmrst alwats enable not turning on .

well noticed another thing

according to last measurement ,

when board turn on , i chek pin 25 there is 0 volts ok , once i press it stay on 3.3 volts always . now if i press the ON off button to disconnect , machine turn off but still 3.3 volts on rsmrst , but will turn on if i press the on off button .

now when i insert the dc jack and he starts not turning on i chek pin 25 and there is 3.3 volts .
and somethimes i insert dc jack and pin 25 is 0 volts and it turns on .

crazy shit , problem on power MNG on SB ?

[dj_ricoh]

Re: l300 rsmrst alwats enable not turning on .

The bios battery got a big job here to receive and transform that 3.3v
To rsmrst from rtc voltage.

Maybe maybe

If it was with me i will have cook his ass in the oven hehehehee

[atsio]

Re: l300 rsmrst alwats enable not turning on .

rsmrst# should be 3.3v always and must go low when you press power button (# means low).

[highpulse]

Re: l300 rsmrst alwats enable not turning on .

well then i dont know why only somethimes it does turn on . weird , this RSMRST beeing 0 somethimes and making it to boot , and once i press the on off it becomes to 3.3 .. then it stay 3.3 .

weird

[highpulse]

Re: l300 rsmrst alwats enable not turning on .

now for ex , it stayed this weekend off , today this morning , iinsert dc jack , put automatically the reb prob on pin 25 rsmrst , and its 0 , once i press on it becomes is state to high to 3.3 volts , then it stay on 3.3 volts but macine dont start up .

nec replaced
kbc replaced
bios reflashed

but somethimes it boot up , after many attemps , then it turn on always , but if it rests then shit .

[highpulse]

Re: l300 rsmrst alwats enable not turning on .

another example , ok now for ex removed dc jack , and inserted it again , chek pin 25 rsmrst , and it 0 , ok if i press on now the machine put rsmrst at 3.3 and stay on that value , once i press on machine does turn on , toshiba logo apear , but if i press to shutdown , machine shutdown but stay with 3.3 volts on rsmrst .

[highpulse]

Re: l300 rsmrst alwats enable not turning on .

dj_ricoh you dream with hoven , thats prof and seen !! :P