blazzelia
Member
Last Activity: 10-09-2024, 03:15 PM
Joined: 11-28-2019
Location: Iasi
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I did that, the fans won't start, the voltage levels are unchanged, the pulsing rails still pulsing.... -
I've checked its value - it has 300uF (the schematic says it should be 220uF). In any case, it seems to be ok. The voltage levels are unchanged without this capacitor....Leave a comment:
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Not yet, will do it and report back. ThanksLeave a comment:
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RAM was still in but the signals are the same without it.
I pulled C7205 to measure it - 9.6uF. When I measure the voltage on it (PP5V_S5) there is a clicking noise - I guess it's comming from one of the inductors from the back of the board....Leave a comment:
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Two of the EN signals also pulsing, one in 0V. The current sensing resistors are fine....Leave a comment:
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[B]PP5V_S5[/B] - 100K
[B]PP5V_SUS[/B] - 290K[B]PP5V_S5[/B] - 100K
[B]PP5V_SUS[/B] - 290K[B]PP5V_S5[/B] - 100K
[B]PP5V_SUS[/B] - 290K[B]PP5V_S5[/B] - 100K
[B]PP5V_SUS[/B] - 290KLeave a comment:
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Here they are:
PP5V_S5 - osc
PP5V_SUS - osc
PP5V_S3 - 0
PP5V_S0 - 0
PPBUS_G3H - 12.5
PPVIN_S5_HS_COMPUTING_ISNS - 12.5
PPVIN_S5_HS_GPU_ISNS - 12.5
PPVIN_S5_HS_OTHER_ISNS - 12.5
PPDCIN_G3H - 16.7
PP3V42_G3H - 3.4
PPVRTC_G3H - 3.4
PP3V3_S4 - osc
PP3V3_SUS - osc
PP3V3_S5 - osc
PP3V3_S3 - osc
PP3V3_S0 - osc
PP3V3_T29 - 0
PP1V05_T29 - 0
PP15V_T29 - 0
PP1V8_S0 - 0
PP3V3_S0GPU - 0
At this point I stopped with the 1.8V/1.5V/1.2V/1.05V...Leave a comment:
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It starts with a few MOhms, then quikly drops and stabilize around 19 KOhms.Leave a comment:
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PP3V3_S5 - oscillating
PP3V3_S0 - oscillating
PP1V05_S0 - 0V
P1V5S0_PGOOD - 0V
P1V8S0_PGOOD - 0V
P5VS3_PGOOD - 0V
CPUVCCIOS0_PGOOD - 0V
PVCCSA_PGOOD - 0V
So I went on the PP3V3_S5 line which comes out of Q7260 through L7260 and I'm lost here ... P3V3S5_TG is oscillating, PPVIN_S5_HS_OTHER_ISNS is a solid 12.5V, P3V3S5_DRVL is oscillating....Leave a comment:
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ALL_SYS_PWRGD - 0VLeave a comment:
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YesLeave a comment:
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Hi,
PPBUS_G3H - 12.5V
F7000 - I only see F7040 and F7041 in my board schematic, both connected to PPBUS_G3H, both ok, 12.5V on both ends
SMBUS_SMC_BSA_SCL - 3.4V
SMBUS_SMC_BSA_SDA - 3.4V
BestLeave a comment:
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MBP A1286 820-2915 green light only, no start
Hi guys,
I have this 2011 MBP - the company I was working for, bought it at the time for a project and gave it to me after that. Later on, I gave it to my daughter which used it for normal internet browsing and office apps. At some point the, now famous, AMD GPU issue hit this laptop as well. I disabled the use of the AMD GPU following some information I found at the time (the one that, at the end, one moved AMD kext drivers to a backup location). So the laptop was using the CPU graphics and it was ok for the said daily usage. I even replaced the drive with an SSD one and it was operating... -
HP Elitebook 8560p - sudden power off
Hi guys,
I have an HP Elitebook 8560p which works for a while, then suddenly powers off.
I check the MB and I found a small cap exploded near a 6912 MOSFET (there were 3 such caps in parallel). I replace it with a 2 uF cap and the interval of power off events increased a lot. Initially the laptop was stopping at, in average, every 15-20 minutes, now it works for hours but it still stops once or twice per day.
I also replaced the 6912 MOSFET but it did not made any difference.
Unfortunately I don't have and could not find a schematic for this laptop so I'm... -
Re: Asus fx505dt
Perfect Mr. Fish
My kid's laptop is running again. Thanks, much appreciated......
Leave a comment:
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Re: Asus fx505dt
[QUOTE=martha februarini;970667]can you try bios from my post sir ?
Thank you for your answer but that BIN didn't work.Re: Asus fx505dt
[QUOTE=martha februarini;970667]can you try bios from my post sir ?
Thank you for your answer but that BIN didn't work.Re: Asus fx505dt
[QUOTE=martha februarini;970667]can you try bios from my post sir ?
Thank you for your answer but that BIN didn't work.Leave a comment:
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Re: Asus fx505dt
Ok, I was able to properly read the chip. The dump is attached.
Thanks,
B
[ATTACH]214847[/ATTACH]...Leave a comment:
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Re: Macronix 1.8V serial flash memory
I bought a Pololu level shifter adapter but each time when I read the chip I get a slightly different content (I'm checking using MD5SUM). After 2-3 read operations flashbios no longer see the chip. After a few minutes I can read it again.
I checked the voltage - 1.85 to 1.9V. Any idea what I am missing?
Thanks,
BLeave a comment:
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Re: Macronix 1.8V serial flash memory
Yes, I just did that. I was hoping for a quicker trick... thanks...Leave a comment:
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Macronix 1.8V serial flash memory
Hi,
Having an Asus FX505DT with a broken BIOS, I pulled the BIOS chip - a Macronix MX25U12873F - to read what's left in it. I noticed the chip is a 1.8V chip while my RaspberryPi provides 3.3V on GPIO lines.
I also have an USBASP programmer but it supports 5V and 3.3V voltages.
Any idea on how to safely interface the little guy to one of the readers?
Thanks,
B
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