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repair a car mp3 modulator

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Let me see...

1 Devise tests to determine a possible cause of the fault.

2 Repair or replace the possible faulty components.

3 Re-test to see if the repair has been successfull.

4 Is it working satisfactorily?
Yes, job done.
No, go to step 1.


JimB
 
a car MP3 modulator... let's see, SMT component density is probably about the same as in the MP3 player itself, and probably uses an SMT IC that's 2 or 3mm on a side....... it's not worth the trouble. by the time you figure out what component is bad, buy a new one (the IC probably sells for more money than the complete modulator), desolder the old one (without damaging any traces) , solder the new one in (again without damaging any traces or making any solder bridges) and put the thing together..... even paying yourself minimum wage (let's say about $10.00US per hour) it would have been cheaper to buy a new one for $10-$20.
 
a car MP3 modulator... let's see, SMT component density is probably about the same as in the MP3 player itself, and probably uses an SMT IC that's 2 or 3mm on a side....... it's not worth the trouble. by the time you figure out what component is bad, buy a new one (the IC probably sells for more money than the complete modulator), desolder the old one (without damaging any traces) , solder the new one in (again without damaging any traces or making any solder bridges) and put the thing together..... even paying yourself minimum wage (let's say about $10.00US per hour) it would have been cheaper to buy a new one for $10-$20.

Not to mention the fact, most of the IC's are probably ASIC's unique to the manufacturer and have no industry equivalent.
 
yup, about a 50/50 chance of that too, the other 50%chance being they just bought a "standard" chip and copied the reference design.... either way, i'd say just save the headache and buy a new one....
 
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