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| Lenovo 330-15IKB (LV315KB) No POST when screen is connected https://vlab.su/viewtopic.php?f=58&t=118171 |
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| Somanos [ 17 авг 2021, 10:57 ] | |
| Заголовок сообщения: | Lenovo 330-15IKB (LV315KB) No POST when screen is connected |
Hi there! I have a LV315KB which doesn't post. Fans turns on but there is no keyboard led (caps). When I take the screen off it post fine (because I have caps led). It won't post with any screen connected, LVDS, HDMI or VGA. Voltage in VCCGT is 0v, but if I remove the coil computer will not post in any way (so some verifications are in place saying it is good) In the AOZ5049QI I have PWM, VIN, VCC, and i don't have FCCM. I changed the AOZ5049QI (PU4802) but got no change. I also did a clean ME and got no change. I don't know what to do. |
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| Leo_vrn [ 17 авг 2021, 15:44 ] | |
| Заголовок сообщения: | Re: Lenovo 330-15IKB (LV315KB) No POST when screen is connected |
Try to change LCD Cable. |
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| jonpim [ 17 авг 2021, 16:11 ] | |
| Заголовок сообщения: | Re: Lenovo 330-15IKB (LV315KB) No POST when screen is connected |
Somanos писал(а): changed the AOZ5049QI (PU4802) changed PU4803 ? bootstrapping kabylake can without vccgt . |
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| Somanos [ 17 авг 2021, 19:11 ] | |
| Заголовок сообщения: | Re: Lenovo 330-15IKB (LV315KB) No POST when screen is connected |
Leo_vrn писал(а): Try to change LCD Cable. But the problem happens whenever there is any type of display connected to it, even with the LCD cable taken off and an external monitor connected to it. jonpim писал(а): changed PU4803 ? It is not present on the board But if you say it can do without vccgt, maybe I am facing other issue. But it is strange that it only boots when it has not to deal with any kind of display |
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| jonpim [ 17 авг 2021, 20:39 ] | |
| Заголовок сообщения: | Re: Lenovo 330-15IKB (LV315KB) No POST when screen is connected |
Somanos писал(а): In the AOZ5049QI I have PWM, VIN, VCC, and i don't have FCCM. https://www.google.com/url?sa=t&rct=j&q ... rmxDj3Ih3G High impedance on the input of FCCM will shutdown both HS and LS MOSFETs does the boot work (pin 3 PU4702 , PC4701 , PR4703 ) ? |
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