Lenovo IdeaPad 3 15ADA05 Model: 81W1, how to disable onboard MICROTEC RAM?
Laptop freezes, sometimes no picture. POST every time with 4GB additional memory but still freezes in the windows.
SSD and BIOS seems to be OK.
Thank you....
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12-30-2024, 09:14 AM
-
Hi,
Does anyone have boardview for [B]MSI MS-14D31 Ver 1.0[/B]
Hi,
Does anyone have boardview for [B]MSI MS-14D31 Ver 1.0[/B]
Hi,
Does anyone have boardview for [B]MSI MS-14D31 Ver 1.0[/B]
Today, 12:20 AM -
I am looking for the schematic or boardview for this motherboard or a motherboard using the same EC ENE 9548G. Thank you for your support.
...01-10-2025, 07:40 PM -
Hello all,
I have Philips Oled 55 (804/12) with black screen and red light blink.
I have opened TV and tested voltages based on similar oled topics, on power supply board i am getting ps_o/f 3.3v and 5v for t-con_o/f while panel_o/f is 0v. And i get black screen.
Also i have done self psb test and i am getting on psb +12V_t and also + 24V for panel. (Measurements on dmm are + 12.3V fot t-con and 22.4 for panel)
When i power only psb and tcon with 4 ribbons for panel i only get black screen.
My questions is what should i do next...01-03-2025, 04:00 PM -
Hey Everyone, I have an LG 86UK6570PUB that wont turn on. Power light blinks 3 times. Tested voltage from power supply to main board and it is sending the correct voltage. When testing LEDs I have 1st strip at 210v 20mA, 2nd strip goes from 208v 20mA to 214 40mA. I'm assuming the LED strips is the issue. Anyone seen this before or can point me to something else to check?Yesterday, 11:19 AM
-
[ATTACH=JSON]{"alt":"Click image for larger version Name:\tIMG_5746.jpg Views:\t0 Size:\t570.2 KB ID:\t3546325","data-align":"none","data-attachmentid":"3546325","data-size":"full","title":"IMG_5746.jpg"}[/ATTACH]Hello,
I am quite noob in advanced electronics, however I'm trying to fix a Sony Vaio PCG-71211M laptop mainly because I love old hardware. I don't want to send it to a technician because this computer is not important for me, I want to fix it as a hobby.
Shortly, this laptop...01-11-2025, 10:11 AM -
Hi, this board does not power on, Vin present on PQ303 drain but on its gate ACDRV_CHGR is around max 2,6V unstable. No short in most of the power rail caps and shunts, pq303 and pq304 not shorted as well. VCC on pin 28 of pu301 present, ACPRN_CHGR also present 6v stable. No Short on caps around pu301 and +19V_CHG. What could preventing the pu301 from boosting acdrv to 25V?...01-12-2025, 10:33 AM
-
Hi, I wonder if anyone can help me fix my Lenovo Legion 5 (15ITH6H) laptop. Basically, after a windows update the computer would not boot anymore. When powering on the laptop the screen has no backlight and nothing would show up, using an external monitor did not help. However, the laptop would still spin up the fans and turn on the keyboard backlight. The keyboard backlight intensity function key would work and the power button led and the charging led are also working. I've tried every possible combination of key press and power button hold down time but did not change anything. At this point...01-14-2025, 03:49 PM
-
Hello everyone
I have been working on this laptop mentioned in the title, it initially had a shorted capacitor. After I replaced it, the thing started working again, but there is still another problem. The laptop was running off a charger, the battery was reporting 96% charge... but when I unplugged the charger, the laptop died. I've measured the battery voltage - 0V. I think it is locked. (Screenshot from batterymon, below).
I've ordered a new 3rd-party battery, but I think there's something wrong with it too - the laptop boots, but the battery isn't charging. Also,...01-13-2025, 03:54 PM -
Hi everyone
Model: DA0P5HMB8F1, Rev F
Please your help with this mobo, DA0P5HMB8F1, it turns on but no video appear and consumes only 22 mA, no suson signal, EC and PCH bios updated, no success.
It responds to power button and try to bring up without success and next it restart with the same cycle, it just restarts all the time, no schematic available, I'm using OP5D schematic, below my measurements on KBC
[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"imagen.png","data-attachmentid":3548786}[/ATTACH]...01-14-2025, 06:27 PM
-
Hey Everyone, I have an LG 86UK6570PUB that wont turn on. Power light blinks 3 times. Tested voltage from power supply to main board and it is sending the correct voltage. When testing LEDs I have 1st strip at 210v 20mA, 2nd strip goes from 208v 20mA to 214 40mA. I'm assuming the LED strips is the issue. Anyone seen this before or can point me to something else to check?Yesterday, 11:19 AM
-
Hi,
Does anyone have boardview for [B]MSI MS-14D31 Ver 1.0[/B]
Hi,
Does anyone have boardview for [B]MSI MS-14D31 Ver 1.0[/B]
Hi,
Does anyone have boardview for [B]MSI MS-14D31 Ver 1.0[/B]
Today, 12:20 AM -
Hello.
i have this problem with a lenovo ideapade s145-15api.
The charging led stays on even when the charger is unplugged. Also in windows it shows that is charging.
Do you have any idea?Yesterday, 07:52 AM -
Hi!
I posted a thread about identifying caps of my Zoom 9000 guitar effect where I mentioned a JBL speaker I'm trying to help my friend with. I haven't gotten any answers to that thread but I have a question regarding the cap in the speaker, so I thought I'd ask it separately.
The cap is marked 100uf 25V. I have found a set of caps on Amazon that I think will cover the caps of the guitar effekt but it doesn't have any 100uf 25V. It does have a 100uf 16V though. I'm pretty sure I read somewhere on this forum that 25V can sometimes be replaced with 16V...but I can't find...Yesterday, 10:48 AM -
Ive been trying to bruteforce unlock the bios by trying all possible passwords I know, but ive gotten no luck at all. I have absolutely 0 idea of what to do, since HP cant give me a SMC.bin file because of expired warranty and stuff. Any help?Yesterday, 05:14 PM
-
Hi all,
I got a 820-01700 of a friend that doesn't turn on. I read that a typical issue with these boards is the TPS62180 generating the NAND voltages, so this is where I started looking. Sure enough, PP2V5_NAND_SSD0 is 4V when the machine tries to turn on (I try to determine this by measuring PP2V5_NAND_SSD1, which is 2.5V as it should in this case. The PP0V9_SSD0 and PP1V8_SSD0 power supplies for the SSD are on at the same time when PP2V5_NAND_SSD0 is 4V). The extremely weird thing is that when the machine is off (PP2V5_NAND_SSD1=0, PP0V9_SSD0=0 and PP1V8_SSD0=0), PP2V5_NAND_SSD0...Yesterday, 08:44 PM -
Hi, this board does not power on, Vin present on PQ303 drain but on its gate ACDRV_CHGR is around max 2,6V unstable. No short in most of the power rail caps and shunts, pq303 and pq304 not shorted as well. VCC on pin 28 of pu301 present, ACPRN_CHGR also present 6v stable. No Short on caps around pu301 and +19V_CHG. What could preventing the pu301 from boosting acdrv to 25V?...01-12-2025, 10:33 AM
-
Hello everyone
I have been working on this laptop mentioned in the title, it initially had a shorted capacitor. After I replaced it, the thing started working again, but there is still another problem. The laptop was running off a charger, the battery was reporting 96% charge... but when I unplugged the charger, the laptop died. I've measured the battery voltage - 0V. I think it is locked. (Screenshot from batterymon, below).
I've ordered a new 3rd-party battery, but I think there's something wrong with it too - the laptop boots, but the battery isn't charging. Also,...01-13-2025, 03:54 PM -
Hi, I wonder if anyone can help me fix my Lenovo Legion 5 (15ITH6H) laptop. Basically, after a windows update the computer would not boot anymore. When powering on the laptop the screen has no backlight and nothing would show up, using an external monitor did not help. However, the laptop would still spin up the fans and turn on the keyboard backlight. The keyboard backlight intensity function key would work and the power button led and the charging led are also working. I've tried every possible combination of key press and power button hold down time but did not change anything. At this point...01-14-2025, 03:49 PM
-
Picked up this 55 inch LG 55LF5800 . It has standby light but that's it .Blinks 3 times .No picture,no sound.Could hear rattling inside.Changed all led strips as half of the reflectors were broken.Put back together still no go .Checked output from power supply to LED connector .Only getting 89 volts on each .Suppose to be 215 V and 145 V . power board number is EAX65423801 .Yes i know screws are not on power board .I just put back on for pics.01-10-2025, 10:04 AM