820-3437 fan spin no boot/chime

[arnonabuurs]

I have an 3437 that actually has a spinning fan but no chime / display. Saw some corrosion under the JTAG and removed it. There is a hole in the board under pin 5 LPC_AD, could this be the issue or is this not important for booting?

 

[dukefawks]

LPC is certainly needed, so probably a short in the board