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Old 12th March 2007, 01:51 AM   #1
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Default Voltage regulator help

My voltage regulators on my amp (audiobahn a18001dt) amp are messed. my question is what should I check?
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Old 12th March 2007, 01:53 AM   #2
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What part(s) are they?
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Old 12th March 2007, 01:57 AM   #3
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if you mean part number
KIA7915PI
KIA7815A
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Old 12th March 2007, 02:35 AM   #4
BWRX is offline BWRX  United States
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The 7915 is a negative voltage regulator (the 15 in the number means -15V output) and the 7815 is a positive voltage regulator (the 15 in the name means 15V output).

A google search for the specific part won't help much, but a search for the part datasheets from a reputable manufacturer will help you better understand how they're used.

http://www.national.com/pf/LM/LM78M05.html
http://www.national.com/pf/LM/LM7905.html
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Old 12th March 2007, 07:43 AM   #5
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According to your picture you have no Power Supply transistors on the board. Without them you will get no voltage to the regulators.

Why do you think they are bad? The only problem I have ever seen with them in this amp are broken legs.
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Old 12th March 2007, 10:01 AM   #6
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Ok after I put the new Mosfets in I will Remeasure them. Im not all that familiar with a class d amp.
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