820-3437-B slow

vsa100

New member
Hi!

I have this 820-3437-B board that suddenly (no drops, no water damage) run slowly (with fan spinning high loading os),
but sometimes it starts and work perfectly fine for days at full speed.

What i can start checking?

Thanks!
 

2informaticos

Administrator
Staff member
Try known good LIO board/flex, as TP too.
Also inspect both connectors for corrosion.
Run ASD when doesn't work correctly, or just monitor temperatures with HWMonitor.
 

vsa100

New member
I get an error on sensor TC0P (Cpu proximity)
Sensor is reading below the low limit

edit: same with TCHP and TS2P
 

JohnB8812

New member
If error remains without the camera plugged in, then inspect inputs and outputs to U5800. I had one similar the other day with a bad U5800.
 

2informaticos

Administrator
Staff member
Did you try disconnecting camera?
ALS sensor is connected on the same bus with the rest of temp sensors.
 

vsa100

New member
Disconnecting camera everything works fine!
I have to check U5800 as John says or i start checking camera cable and components inside the screen?
 

vsa100

New member
No, but it uses the camera...
Checking J4002 PIN 4 is shorted to ground, i will check R4030 and R4031, am i right?
Thanks
 
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