If you realized HP Elitebook 840 series have been failing a lot in recent years, which I think is due to time since they have been in existence for almost 10 years. Today I decided to share a video demonstrating how to disassemble, diagnose and fix an HP laptop that does not turn on or charge.
This is very common, where a laptop standby voltage control IC fails to create first stage volts that enable the system to power on.
The chip I replaced is called TPS51225, it's very common in laptop motherboards with 4th Gen processors, like HP 820, Dell 6440, etc.
Негізгі бет HP EliteBook 840 not charging not turning on, motherboard repair
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