Hi,
Yes, the battery was disconnected. Laptop was dismantled and was testing the screen.
At first the display came and I saw the logo, then it restarted and it was a continuous loop. Now there's no display but same fan spinning for a few seconds the repeating....
lawrenceptrini
Senior Member
Last Activity: 05-05-2025, 11:31 PM
Joined: 03-13-2023
Location: port of spain
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Ok thanks, point taken.Leave a comment:
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Thanks for your reply.
I tried the bios at post #2 but the same thing is happening. Just keeps restarting every few seconds including the fan, it spins every four seconds repeatedly. Power button does not shut it down.Leave a comment:
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Hi,
Lenovo Ideapad 3 100-15ibd. 19v, 3.3v, 5v, 1.35v, 1.8v, 1.0v all present but laptop
restarts every 7 seconds or so with no display. Tried hard reset etc. but no luck. Resistance to ground seems ok on all coils. Could be corrupted ME region of bios.
Can someone please assist with cleaning the ME region of the bios...info attached below.
Lenovo Ideapad 100-15IBD
MTM: 80QQ0060US
Serial Number: PF0BM2WW
MO: PF9XB5925010
Thanks
...Leave a comment:
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Hi, thanks for your reply.
The laptop had a damage hinge but was giving display. I disassembled to change the palmrest and bottom cover . I then noticed there was a white highlight around the screen suggesting screen going bad so I change the screen and since the problem arise....
I will try your suggestion of flashing the me bios......the motherboard is UMA.Leave a comment:
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Here's the schematic for this motherboard:
[COLOR=#d35400][B]Link to schematic[/B][/COLOR] - [url]https://www.badcaps.net/forum/document-software-archive/schematics-and-boardviews/3480925-lenovo-ideapad-100-15ibd-laptop-schematic[/url]Here's the schematic for this motherboard:
[COLOR=#d35400][B]Link to schematic[/B][/COLOR] - [url]https://www.badcaps.net/forum/document-software-archive/schematics-and-boardviews/3480925-lenovo-ideapad-100-15ibd-laptop-schematic[/url]Here's the schematic for this motherboard:
[COLOR=#d35400][B]Link to schematic[/B][/COLOR]Leave a comment:
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Hi,
With adapter and battery unplugged here are the measurements:-
Voltages:
PL303 - 3.388v
PL304 - 5.111v
PL501 - 1.363v
PL701 - 1.054v
PL302 - 0.003v
PL9 - 1.810v (goes to 0 then rebuilds repeatedly)
Bios chip:
PIN 1 - 3.388v
PIN 8 - 3.388v
Resistance to ground:-
Ohms:
PL303 - 3.041 K ohm
PL304 - 5.230 M ohm (goes to 0 then rebuilds repeatedly...Leave a comment:
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Thanks for your reply.
Initially it was giving display then looping, I was seeing the lenovo logo
then it was restarting but now there's no display but it's looping continuously.
I will take measurements and report tomorrow.
Thanks again.Leave a comment:
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Lenovo Ideapad 100-15ibd restarts every few seconds continuously.
Lenovo Ideapad 100-15ibd
Laptop turns on and restarts every 7 seconds or so.
Power led and Webcam led turn on and goes off repeatedly.
Pressing the power button does absolutely nothing.
Same thing happens whether the bios battery is connected or not.
I tried resetting the bios, press power button to drain power etc.,
but no change same thing. I tried numerous ram modules but same result.
Using a desktop power supply I can see the amps going to zero and rebuilding,
same thing with multimeter. Doesn't matter if I plug in adapter or main battery,... -
Hi,
Reporting the follow up to this issue.
I ended up purchasing a used motherboard. After removing the motherboard from the box, I put on the heatsink and tested with an external monitor and got display. I then peeled back the protective layer and located the U5501 ic.....I checked 3D3V_LCDVDD_S0 and got 3.3v, then checked eDP_VDD_EN_D and also got 3.3v. So I then connected the internal screen and the display came on. Thanks for the assistance, it appears possible faulty PCH/CPU.Leave a comment:
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Hi,
Thanks for you response.
With black Multimeter probe on ground and red on pin 4 of U5501 IC when I turn on power I'm getting 0.001v.
When I repeat this procedure on pin 5, I'm getting 3.385v.Leave a comment:
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Hi, @ reformatt
I am getting these voltages:
3D3V_LCDVDD_S0 - 0.001v
3D3V_S0_GS1 - 3.325v
3D3V_AUX_S5 - 3.385v
BL_ON - 0.000v
13.3v on 19V_DCBATOUT_LCD
please advise....Leave a comment:
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Hi,
Thank you.
I will check if the voltages you stated stays present or disappears therefore hinting there's no communication from the display.
I'll also have another careful look at the display to see if there are lines or markings to confirm a damaged screen.
Yes, you are right there's stretch adhesive on both sides of the screen, if the measures above doesn't bear fruit then I'll remove the display/or full assembly and get it tested.
will report my findings.
thanks again....Leave a comment:
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Hi,
Thank you for your response.
I haven't remove the screen as yet as it's adhered with adhesive to the casing. So no, not certain if it's ok.
I wanted to know if it's a familiar event with this model and if there's a solution without having
to remove the screen.
I now understand why I'm getting 12v on the LCD connector, thank you.
Haven't seen a backlight image. When turned on, no flickering, and no feint image when I shine a light on it.
Yes I'm getting 12v when the laptop is turned on.
Any other voltages to check? or you suggest...Leave a comment:
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Lenovo Ideapad Flex 5 14ITL05 Only working on external display
Hi Guys,
LENOVO IDEAPAD FLEX 5 - 14ITL05
BIOS VERSION - FXCN24WW
EC VERSION - FXEC18WW
MTM - 82HT0004US
SERIAL NUMBER - R9130MDP
CPU - i7-1165G7
This laptop powers on but shows nothing on the internal display.
However, if I attach an external display it works fine.
Observations: When I shut down the laptop from windows,
the fan remains spinning until I close the lid. If I leave the lid open
the laptop will restart on it's own although I select shut down from windows.
Also, when I check the voltage on the... -
mon2[USER="295753"]mon2[/USER] Thanks for your assistance.....all is well with the laptopLeave a comment:
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Leave a comment:
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Ok thanks, will do as suggested and reportLeave a comment:
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