I am trying to fix a Lenavo Yoga 720. The buck converter near CPU shows 7Ohms short to ground. No schematic and I guess that is CPU VCore. Is is something normal?
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Re: Lenavo Yoga 720: Is 7 Ohms a Vcore short to ground?
short is under 1,5ohm. 7ohm is ok for newer cpu -
Re: Lenavo Yoga 720: Is 7 Ohms a Vcore short to ground?
It's ok for VcoreComment
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Re: Lenavo Yoga 720: Is 7 Ohms a Vcore short to ground?
is the vcore voltage present? what is the value?Never stop LEARNING because life never stops TEACHING!Comment
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I have a laptop HP Victus 15-fb with motherboard DAG3PRMB8D0, CPU Ryzen 7535HS, and GPU RTX 2050. The laptop has a power issue: it does not turn on at all, and there is no light on the DC jack.
After inspection, I found that an NMOS near the charger input had a short. I replaced it, but the short remained on the 19V line. I checked the charging circuit and it was fine, but the short appears after the current sense resistor near the charger. The charger does not pass current when connected, so I inject 3V–4V after the sense resistor. No component gets hot, except the CPU which becomes... -
Hi, Would appreciate some help.
I have an Apple Late 2013 15" A1398 MacBook Pro with Logic Board 820-3662.
Get charger light but no fan spin or chime. No liquid damage.
Found PPBUS and VCORE both shorted to ground. Other rails were ok.
Removed VCORE MOSFETS U7310, U7320 and U7330. Found U7330 was in fact shorted.
With the 3 MOSFETS removed, get PPBUS and fan spin. VCORE is still hard shorted to ground (0 ohms).
Attempted voltage insertion on VCORE to locate short using bench supply set at 1.0 VDC and 4.95 Amps (max current for my... -
Hello, I have a pcb from an e scooter which had a faulty diode but even after removing it from circuit, it still has a short to ground on the three components circled. I have removed every cap on the board and tested one by one and the short is still there and all the caps test ok. Could this be because I haven’t put a diode back on it yet or where do I go next please? -
This specification for the Lenovo Yoga X1 Yoga Gen 6 Hybrid (2-in-1) can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the X1 Yoga Gen 6 boardview and X1 Yoga Gen 6 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or...09-07-2024, 05:00 AM
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This specification for the Lenovo Yoga Yoga 6 13ALC7 Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the Yoga 6 13ALC7 boardview and Yoga 6 13ALC7 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download...09-07-2024, 05:00 AM
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