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Originally Posted by twister6
Yeah, resistors are easy to check with multimeter (burned one will have an open),
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Heehee. Ever tried to find a broken resistor from a PCB without detaching it? You'll have to detach the resistor to get a reliable measurement and then solder it back. Troublesome with basic components? Very. Troublesome with SMD's? Don't even bother.
Juho's tip of the week: Coping with broken caps. Ever wonder is a cap broken or not? You only need a DC power supply with current limiter LED. First discharge the cap and then just recharge it with the power supply. If the led blinks the cap is ok. This works only on bigger caps. On smaller ones it's best to use basic resistor-cap-AC source circuit. Just pick a resistor that is ok for the cap and then just measure does the voltage over the cap lower on higher frequencies.
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You need to know the exact value, and the only way to fix it is to replace it.
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Well anykind of component is only fixed by replacing.
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But, pwb traces are unfixable.
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Yup.
I can say from experience that no-one will fix SMD devices. If there's trouble with it, you'll have to replace the whole board. There's so many components that troubleshooting the device is waste of time.