Solved! Laptop repairs

Mustafa_tara

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May 9, 2010
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Dear friend,
I am in laptops repairs. I do chip level repairs of motherboards. My knowledge is very limited. i have a very keen desire to learn step by step checking of voltages & checking of components & ic's . I do not have any circuit diagram nor any tools . pls hlp me or guide me to a site that can realy teach me theoratically & practically to repair motherboard.
Also if anybody knows about the machinery or tools to locate exact fault of mb pls help me.
Thanks

Mustafa
 

RetiredChief

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Feb 22, 2007
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Equipment. (for a starter)
(1) digital voltmeter - get one that measures Ohms, volts (AC/DC), Capacitance.
(2) O'scope, for signal tracing
(3) For testing IC's - an IC tester is expensive. It's cheaper to replace an IC that troubleshooting has Identified.
(4) Temperature controlled soldering station
(5) Antistatic work station - cheaper to construct than buying an antistatic mat.

For training.
(1) The library would be a good place to start.
(2) Google books on:
(a) AC/DC fundamentals
(b) Power supplies
(c) Waveshaping circuits, Oscillators, Amplifiers (both audio and RF)
(d) Troubleshooting techniques
(his is just a starter list.

You could also Google “Correspondence courses in Electronics".
 

ksampanna

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How on earth could you be in repairs if you don't know anything?
 

Mustafa_tara

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It does not mean i do not know anything. As far as all voltages ie dc ie 5v, 3v, 2.5v, cpu voltages i know. I can reball north & south bridge. My main problem is
1-- step by step signal checking
2--- how to check whether my bios functioning 100% ok
3- also i/o chip
i have one chinese debug card which in no way helps me
 

RetiredChief

Distinguished
Feb 22, 2007
465
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19,010
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Equipment. (for a starter)
(1) digital voltmeter - get one that measures Ohms, volts (AC/DC), Capacitance.
(2) O'scope, for signal tracing
(3) For testing IC's - an IC tester is expensive. It's cheaper to replace an IC that troubleshooting has Identified.
(4) Temperature controlled soldering station
(5) Antistatic work station - cheaper to construct than buying an antistatic mat.

For training.
(1) The library would be a good place to start.
(2) Google books on:
(a) AC/DC fundamentals
(b) Power supplies
(c) Waveshaping circuits, Oscillators, Amplifiers (both audio and RF)
(d) Troubleshooting techniques
(his is just a starter list.

You could also Google “Correspondence courses in Electronics".
 
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