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Search: Posts Made By: dg.ott.ca
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 02-03-2019, 04:24 PM
Replies: 0
Views: 42
Posted By dg.ott.ca
iMac A1418 21 inch 2013/2014 820-3588-A NO POWER, FIXED!

Problem: iMac does not turn on, no post, no power, no fan, DEAD

Diagnostic:
Check U7600 for 5V, 3.3V 0V on both
Check C7650 0V, resistance to ground 50Koms (OK)
Check Q6970 pin5 ...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 11-27-2018, 01:17 AM
Replies: 2
Views: 102
Posted By dg.ott.ca
Re: help acer 5733 probleme work only 7 min then shutdown

this acer model is known for bad heatsink pipes. if heatsink pipe temperature at cpu is different than pipe temperature by radiator then you need to find another heatsink. once they lose gas its...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 11-27-2018, 01:13 AM
Replies: 21
Views: 726
Posted By dg.ott.ca
Re: please need help :crying:

I work in computer store, when people bring us acer for repair we always try to recycle them (as in; put them in garbage). I suggest you do the same.
Forum: Schematic Requests ONLY! 11-27-2018, 01:02 AM
Replies: 1
Views: 313
Posted By dg.ott.ca
Re: Boardview for Dell Alienware M18x R2, LA-8321P

well that one is hard to find...
however you can find this one easily: Compal LA-B751P schematic.
many things are same and also labeled same between these boards.
look up page 60 for DC IN and BQ...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 11-27-2018, 12:53 AM
Replies: 27
Views: 1,323
Posted By dg.ott.ca
Re: Alienware M17x R3, LA-6601P is missing +VCC_GFXCORE_AXG CPU voltage

you need to check pu800, it makes +VCC, I just fixed similar board (LA-C912P).
often this chip is shorted because of bad caps that fail under heatsink heat. check caps near pu800. Easiest way to...
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