Acer e5-473 no display - BIOS REQUEST

[String2016]

I need help can someone fix this original dump the problem it turns on fan spins at full speed but there is no display the board id:A4WAB LA-C341P REV 1.0

[sancheti81]

Re: Acer e5-473 no display

try this and reply

[String2016]

Re: Acer e5-473 no display

still the same issue turns on fan spins at full speed but no display

[String2016]

Re: Acer e5-473 no display

can anyone clean the me region of the original file i uploaded please

[ala_borbe]

Re: Acer e5-473 no display

here you go

[String2016]

Re: Acer e5-473 no display

still the same issue fan turns on fan at full speed but there is no display

[mcplslg123]

Re: Acer e5-473 no display

Do you have VCC core?? If VCC core is missing then fan also at full speed on some mb.

[String2016]

Re: Acer e5-473 no display

I think bios is ok there is somewhere else is the problem,because sometimes it shows display once and then it will not and fan at full speed vcc core is missing and U16 pin 2 and 6 of transistor has no voltage standby but if i turn on voltage is present anyone please help guide this please

[String2016]

Re: Acer e5-473 no display

anyone please help on this there is no voltage on PL1203

[String2016]

Re: Acer e5-473 no display

anyone please help

[JaroTech]

Re: Acer e5-473 no display

Hi, give me all the voltages on the PU1201 chip.

[String2016]

Re: Acer e5-473 no display

Thanks for the reply jarotech i cannot find the pu1201 chip on the board

[JaroTech]

Re: Acer e5-473 no display

It should be near the PL1203 which has no voltage.

[String2016]

Re: Acer e5-473 no display

i found the pu1201 but there is no chip on the board see attached

[String2016]

Re: Acer e5-473 no display

i found a chip near a pl1203 it pu601

[JaroTech]

Re: Acer e5-473 no display

I am referring with only the schematics of the Acer Aspire E5-473. If you do not have the PU1201 chip, you should not have the PL1203 coil either.

[String2016]

Re: Acer e5-473 no display

you are correct i check it again i dont have pl1203 its pl602 above of that coil is pl1203 and its blank and don't have coil

[String2016]

Re: Acer e5-473 no display

but on the board it marks A4WAB LA-C341P REV 1.0 2015-01-28

[JaroTech]

Re: Acer e5-473 no display

Ok, but what are the voltages you miss?

[String2016]

Re: Acer e5-473 no display

update: if i rest overnight when i try to turn on display comes on but when i shut down now it blinks and then fans spins at full speed but there is no display. tried already mild reflow on cpu but still same issue