Mackie micro serie 1202 first version

noiro

New member
Hi I have a problem with an old Mackie 1202, that I have for over 20 years, I love this piece of equipement, easy to use and sound pretty decent, recently I notice that I have a hum, a noise through the master output and the headphone output that goes away after the mixier gets warm, take about 5 minutes and it does not come back, let it cool and here it is again, so I though that perhaps it was the two caps 2200uf of the power supply that was the cause, I changed those but still the same problem, perhaps it the two voltage regulator(transistor) of the power supply 7815A and 7915A but I'm not certain, I may try that anyway and see, caps were only $9 for 3, 7815A and 7915A are $2 each on ebay.

Anyone with a similar problem!

thanks!
 
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