A DV9208 arrived with overheating problems. Luckily it was caught before it started generating additional issues with the GPU.
Unit would overheat, cause shutdown/off without notice.
WIFI would turn off
Heat sink vents 75% blocked, so insufficient cooling was the culprit.
Disassemble unit, disassemble heat sink, clear vents.
Problem #2 was a little more different. Because the Southbridge
would also overheat, causing loss of contact on solderballs.
Clearing the lint from heatsink will remedy issue with overheating/shutdown. Since no drive arrived with unit a substitute drive was used to run system for several hours, then turned off, and test again. I do this about 4 tests so that nothing happens when it gets back to the customer.
replaced with copper pad. The pad
from HP is only ok, but many times the CPU gets so hot that the Aluminum breaks down and sticks to the CPU. Not providing a good thermal transfer.
Reflow process is done to both GPU and SouthBridge. 60 day Warranty offered