DoOm86
Member
Last Activity: 05-27-2026, 04:07 AM
Joined: 11-14-2022
Location: Legorn
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i have tried but the laptop is still doing the same. maybe i do something wrong. here the final bios i have following those instructions. Thx!... -
My bad. I must have taken the wrong bios from my bios folder. I attached the correct one taken from the laptop....Leave a comment:
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hello, i need help.
i have also this laptop with the following info:
Model: ideapad flex 5 14ALC05
S/N: PW013TRF
Board Model: LC56-14A SVT 203021-1
Boardcode: 448.0MD08.0011
Like many here the laptop turns one but no display with led on cap and esc, while the led on the power button is blinking.
I tried many bios that i found here without success. I tried to do like sugggested in the pic attached but i had no luck. I'm not sure my original bios wasn't messed with before i could back it up.
I attached it anyway. Thanks....Leave a comment:
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Ok, I'll try it. I'll take a Pic of the pcb as well and post itLeave a comment:
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Daikin IR remote ARC452A3 not communicating
Hello everyone.
I have this remote that turns on and does everything is supposed to do, but not communicating with my AC unites. With other remote (same model) everything is ok.
Weird thing I have a IR tester and the remote signal is detected even from far away. I checked with my phone camera as well and I can see the light clearly every time I push a button. I opened both remotes (working and not) and all the values are the same on the main capacitors, led transmitter and even the frequence on the crystal. Of course I even changed the batteries and give it a good clean with isopropyl... -
Update: after making many many attempts and checked everything, I belive the GPU has failed (but not shorted). I sent the laptop to HP which replace the mainboard. Now it's working perfectly. I checked the values of the new mainboard and confronted them with the old one. On the GPU coil the ohms value was higher on the new motherboard, that's all.
Hope this can help someone else in the future.
Thanks everyone for the help....Leave a comment:
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OK then. I'll try to check the entire board again and see what i can do more to try to understand what the problem could be. i'll write here when i have updates
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Same thing. It turns on, stay on, it charghes the battery and turns off if i push the power button. I have all the necessary rails present, no shorts were found. The display is completly dark (no image, no backlight) and nothing with an external monitor. I cecked again the pin of the bios with the oscilloscope and i have both voltages and signal presents.
Can we try a different bin or we are sure that is not the problem at this point?
ThxLeave a comment:
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I succeded to save the bios with the AsProgrammer. i lefted the setting as they were (size=16777216; Page=256; SPI=25xx).
Thanks in advance guys...Leave a comment:
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Ok, tomorrow I'll try to back it up and post it here, hoping my cheap bios programmer will do the job (ch341).
Thanks for the help till now, I really appreciate it...Leave a comment:
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volinakis The chip in the red square is the pic with the ic "mxic mx 77L12850F" . I took some other pics of ic on the board.
The ic "mxic 25u1633f" that I upload the bin file previously it was close to the cpu, under the black plastic tape.
Don't tell me I backed up the wotng bios 😅 according to the datasheet the "mxic 25u1633f" is a bios ic. The "mxic mx 77L12850F" in the red square doesn't have the "25" or "24" at the beginning like the usual bios chip has.
Obviously there are many things I don't...Leave a comment:
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OK, i found it. it's a "mxic 25u1633f".
It doesn't have "128" in it but it is the only chip that according to the datashhet is a bios chip.
This notebook has also another chip close to the SIO (IT5570e-256 CXA) which is still a ITE (8308fn CXA). Never seen something like this.
I backuped the bios (hoping is this one mxic 25u1633f😆) and posted it here...Leave a comment:
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SMDFlea It's a winbond, it's start with the number of 25 and has 3,2v. But maybe you are right. I just checked the datasheet and take a screenshot. I'll check the mb better asap, probably i got tricked 🤦🏻...
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Ok, I couldn't read the chip with the clip that comes with the ch341. Tomorrow morning or Monday I'll desolder it and solder it on the adaptor. I hope the cheap reader won't give me hard time. Then I'll post it here.
Maybe it's the ME region 🤷Leave a comment:
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HP Omen 17-ck0010nl no video
Hello,
I have the following notebook:
HP Omen 17-ck0010nl
SN: 5CD2018YV7
MAINBOARD: DA0G3LMBCG0 REV G
BIOS CHIP: WINBOND 25Q80DV16 2139 6124 52200
The computer stop posting while whatching youtube. It turns on, stay on, it charghes the battery and turns off if i push the power button. I have all the necessary rails present, no shorts were found. Already disconnected everything from the mainboard and change the ram (trying even one per time in both slots).
At this point i believe is a bios problem. I try with an usb pendrive and the bios on the... -
Yes the new chip was still getting hot.
I didn't find any short before I ordered a new one. I installed the new one, checked, everything was fine. I turned the laptop on and I had backlight but no video, the laptop at least turned on and I thought "ok, this one is solved, there is another fault". But then the laptop shut down itself and guess? Same as before and the chip was hitting up like the first one. Still no short according to my multimeter even after removing the chip, but a low resistance of course on the coil of the output. So I carefully injected a bit of of current on...Leave a comment:
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Hello again.
Sorry I didn't update you guys before but the TV was in test at the client's house and I wanted to be sure it was working.
So at the end the tv had a double fault. A problem was in the power supply board, which I couldn't understand which component was faulty. The TV at that point turned on but after just a week of working intermittently, I found out a motherboard problem as well. I had one and I changed it to save time, even though I was curious to know the problem.
Now it's working great.
Thanks...Leave a comment:
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Chip has arrived, swapped it and the chipset got shorted instantly. Maybe it was even before, I'm not sure. What I am sure it is the end of this motherboard. Too bad.
Thanks anyway for your help 💪🏼Leave a comment:
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Diah oh yeah, I forgot to mention. I don't know why, but if I measure the connector LED + and LED - with my multimeter I don't have a reading (voltage DC mode) but if compare them to ground I have 76v and 48v respectively. If I use my LED tester on the connector (connector disconnected, testing from the Led side of course), LED + and LED -, i have around 30v (if I am not mistaken) and the backlight is fully present.
EazyBone ok, I upload the pic now.
If needed, I upload also the schematic of the psu...Leave a comment:
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Sorry. Model: philips 55pft5500/12. I can't edit my title.
EazyBone I didn't think to check the return signals, assuming everything was alright since the TV worked fine (backlight apart). I'll check the signals, hoping that is a problem, at least I can try to work it out.
One thing I know for sure. When the TV is in standby I don't have voltage at the BL connector. If I turn on the TV I have it instead.
When the TV is on I have 76v on the positive lines and 48v at the negative ones, comparing with ground. While checking with my led tester, it takes 125v on the positive...Leave a comment:
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