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macro tech 2400


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#1 mirkode

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Posted 06 June 2006 - 11:10 AM

I have in repair macro tech 2400. Sometimes when power on it is blown up IC104 MC33079. This is happened three times before. I don't know what happened. Please help me.

#2 mirkode

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Posted 08 June 2006 - 08:59 AM

QUOTE(mirkode @ Jun 6 2006, 05:10 PM)
I have in repair macro tech 2400. Sometimes when power on it is blown up IC104 MC33079. This is happened three times before. I don't know what happened. Please help me.
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does anybody know to help me?

#3 NWCA

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Posted 11 June 2006 - 12:39 AM

possibly a short circuit somewhere on the main board. sometimes caused from over heating or power surg. the 5002 has been known to over heat and melt it's own power mains, blowing everything inside... as seen here.



but this doesn't mean that this is the problem. could be a matter of which i mentioned above, could also be a dust clutter on a circuit or maybe an actual factor faulty, bad solder point?

#4 KGring

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Posted 12 June 2006 - 09:26 AM

U104 is in the input path of the amplifier. If this continues to fail, the low voltage regulators may be bad, or the signal coming into the amplifier is way to high.
Kevin B. Gring
Crown Audio
kgring@crownintl.com