Medion Akoya MD98920 P7624 Board M71P MB 10924-1 Bios Help
Hello, need some help with this board BIOS.
I already dumped it and tried a CleanME, with no luck, problem is still the same board power on, power led on, but no display, fan does not spin.
Asking if someone has a working dump, I could not find it anywhere.
Attached my original dump....
EnricoS92
Member
Last Activity: 10-30-2023, 05:47 AM
Joined: 09-07-2018
Location: AQ
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Medion Akoya MD98920 P7624 No CPU and GPU Voltages
Hello,
need a little help with this notebook, I coould not find any reference on the web.
The motherboard is M71P MB 10294-1, found only that is similar to an Acer V5-531 MB, attached the schematic I'm using as reference.
It was not powering at all, found the first mosfet PU3801 shorted on the board, on the schematic is named PU3802, replaced and now it powers on power LED on, but no screen and also the fan does not spin.
Missing CPU Vcore and CPU integrated GFX Vcore, and also the Nvidia GPU Vcore.
Ram Voltage is present... -
Re: Hitachi 43HAE4251 - Vestel 17MB171 - Displays logo and reboots
Ok, I solved it.
A friend gave me the firmware for another motherboard 17MB170 and it worked, the brand logo is not Hitachi anymore, now is Regal, bit that is not a problem.
Also had to change a setting on the factory menu, the screen was displaying some vertical lines and dots: SSC adjust-> LVDS to off
Here is the file:
[url]LINK REMOVED AT POSTER'S REQUEST[/url]
For this 17MB171 it has to be renamed "upgrade_loader_no_tvcertificate.pkg" for...Last edited by EnricoS92; 12-09-2021, 11:40 AM.Leave a comment:
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Re: Eeprom dump thread!
Hi,
I'm looking for a firmware/ software for this TV, it is stuck on boot logo and reboots every few seconds, I think before starting android.
Hitachi 43HAE4251
17MB171
VES430UNDH-N2-N45
hope someone could help, thanks.Leave a comment:
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Re: Hitachi 43HAE4251 - Vestel 17MB171 - Displays logo and reboots
Let me add chassis sticker number
VES430UNDH-N2-N45...Leave a comment:
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Re: Hitachi 43HAE4251 - Vestel 17MB171 - Displays logo and reboots
Hi,
panel is LG LC430EUE FH M1Leave a comment:
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Hitachi 43HAE4251 - Vestel 17MB171 - Displays logo and reboots
Hello,
I have a problem with this tv Hitachi with vestel 17MB171 board.
I turned off a couple days ago and the next morning when I turned on it had the issue, i tried to left the power unplugged for several hours but nothing.
The tv turns on shows the logo picture and after a few seconds reboots, and start over again.
I was able to connect via uart to the tv and grab the log I attached, it has logged 3 reboots.
I believe it is a corrupted software, but I could not find any online, does anyone has it, or where to download.... -
Re: Aspire One 725 - Screen No picture - VGA and HDMI ok - da0zhgmb6d0 rev d
Ok, I reply to myself.
I solved it, it was a 0 ohm resistor R22 that had gone bad, on the LCD_DATA_EDPAUX-_R line....Leave a comment:
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Aspire One 725 - Screen No picture - VGA and HDMI ok - da0zhgmb6d0 rev d
Hello everyone, need a little help with this one,
I have this 10" laptop, wich seems to work fine, it starts, load Windows and everything else, but has no picture on the LCD screen, the output on the VGA and HDMI port works regularly.
The screen and cable are ok tested and working.
The board is a "da0zhgmb6d0 rev d" with AMD C70 APU, I checked, all the voltages are present.
I flashed a working bios i found on this forum but same problem.
I can only find that, on the screen connector, DISPON and LCDVCC are missing,...Last edited by EnricoS92; 05-03-2021, 12:47 PM. -
Re: Asus UX51VZA fans always full speed
Hi,
Q2804 is responsible for both the temperature sensors and the ambient light sensor readings.
Your laptop should have the ambient light sensor for the automatic screen brightness compensation feature.
Boot into windows and check if it works by covering the sensor with your finger (I don't remember exactly where it is, usually near the webcam) and see if the brightness dims when you cover it and vice versa. (Check that all the drivers are installed)
If the automatic...Leave a comment:
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Re: Sony Vaio SVF152A29M - No power on - DA0HK9MB6D0 Rev.D
Thank you all for your help.
I solved it, it seems it was the bios IC, even if it programmed and verified ok, it wasn't working.
Today I replaced it with a new one and it worked.Leave a comment:
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Re: Sony Vaio SVF152A29M - No power on - DA0HK9MB6D0 Rev.D
Pin 4 VDD 0V
Pin 10 LID# 3.3V
Pin 11 AC_PRESENT 0V
Pin 64 AC_IN 3.3V
Pin 123 RSMRST# 0V
Pin 115 +3VPCU 3.3V
Pin 102 AVCC 3.3VLeave a comment:
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Re: Sony Vaio SVF152A29M - No power on - DA0HK9MB6D0 Rev.D
Hi,
checked pin 108, 0V.
no short to ground either.
Also checked continuity between pin 108 and power switch connector CON2 pin9, measure 1Kohm resistance.Last edited by EnricoS92; 09-01-2019, 07:43 AM.Leave a comment:
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Sony Vaio SVF152A29M - No power on - DA0HK9MB6D0 Rev.D
Hello everyone,
I have this sony notebook, which shows no sign of life, no led comes on, not even the battery charging indicator.
I checked on the motherboard and 19V is present, and +3V_WAKE and +5V_WAKE are present on PL11 and PL12.
Also +3V_S5 is present on bios chip Pin 8, and +3VPCU is ok on Nuvoton NPCE985L chip.
The voltages are present both with the power supply and with the battery only.
I could only find that on the power button there is no voltage and no short, and I already flashed the bios with a known good... -
Asus 3-pin charger resistor
Hi,
Does someone know the value of the resistor between the central pin and ground of a 90W Asus 3-pin charger for notebooks?
On some Asus laptop it is used for the "A/D_MAX_POWER", wich is connected to an analog input of the EC.
The resistor placed in the charger is the lower one of a resistor divider, the upper one is placed on the motherboard (100 KOhm) and it is tied to 3V.
I remember a value of 90 KOhm for this resistor, but I can't remember if it was a 90W or 65W charger.
If someone has a 90W Asus 3-pin charger, please...Last edited by EnricoS92; 01-20-2019, 07:10 AM. -
Re: Asus UX51VZA fans always full speed
Ok, solved.
Q2804 was faulty and was impeding the EC from reading the data of both the temperature sensors and the ambient light sensor.
Replacing it solved both the problems.
Thanks for the support.Leave a comment:
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Re: Asus UX51VZA fans always full speed
Tried, no change....Leave a comment:
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Re: Asus UX51VZA fans always full speed
Ok, I didn't solve the problem but I booted into Windows and noticed that the automatic brightness of the screen and of the KB backlight is not working.
I can see on the boardview that the SMB1_CLK_S and SMB1_DAT_S lines are shared between two temp sensors and the LCD.
Are these two lines also used to comunicate with the brightness sensor mounted on the screen?
If so this could be the problemLeave a comment:
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Re: Asus UX51VZA fans always full speed
Tried, powers on, doesn't post, fans always 100%.
I will reflash the original bios dump and check for something else....Leave a comment:
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Re: asus k56cm missing resistor
Hi,
I have a K56cm, both resistors are present (under the black tape under the heatpipe) and they are 0 ohm....Leave a comment:
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