Friday, January 13, 2012

DV4-1255dx - No Video, Blinking lights on topside

DV4-1225DX
Needle in a digital haystack - numerous problems

Damaged Coil Side view




Problem described as Memory Slot Not working & No Video


Since I had never seen this unit come on, with memory in slot 1 or slot 2 there was not much I could do other than thoroughly inspect the system fisrt.


Damaged coil Top View
1: Found that a coil under the PC Card slot was broken.
    Replaced and Test - No Fix
Replaced












When peeling back the plastic near the Video connector- looking close I notice a cap is stuck to the plastic. Very small ceramic cap that was hardly noticeable without magnification.


Now- Where does if come from and where does it go?  What is it's purpose?






Under magnification, I view the area where the smaller components are and
see evidence of solder or tampering.  This appears to be the location of the missing/stray cap.




  
Since this is a multi-step repair...


Back to the work bench to see if the problem is fixed now.
Stray cap found near video conn.


Location of cap
Missing from pad
Replaced Capacitor













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