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Old 21st September 2009, 08:52 AM   #1
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Default kicker zx100.2

Hello
Thaks for god anser the last time i help whit a problem!!!
Now i have kicker zx100.2 that worn´t shot off.
r1 (100ohm) was burnd. c10 and c19 was svolen. I have change the components. But it is just on. I do not nead remote.
Power 12v to the tl494cn.
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Old 21st September 2009, 10:47 AM   #2
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Location: Louisiana
If no one else can help, post at least one photo of the inside of the amplifier showing the components around the TL494.
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Old 21st September 2009, 10:56 AM   #3
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Default pic

Her is a pic on it
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File Type: jpg P1248_21-09-09.JPG (857.1 KB, 52 views)
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Old 21st September 2009, 12:46 PM   #4
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Follow the trace back from pin 12. Does it go to the center leg of a transistor (possibly an A1266, or an A1023)?

If no and it's tied to pins 8 and 11 and is also connected to the 100 ohm resistor, does the other end of the resistor go to the center leg of a transistor?
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Old 21st September 2009, 01:54 PM   #5
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Default legs

leg 8 and 11 gos to a transistor (2n4401) and then to the medel leg on irfz46n.

I have fil in the pic.
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Old 21st September 2009, 03:54 PM   #6
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Post the DC voltage on the pins of the two circled transistors. Place the black meter probe on chassis ground. Place the red meter probe on the point where you need to measure the voltage. No remote voltage applied.

yellow
Pin 1:
Pin 2:
Pin 3:

orange
Pin 1:
Pin 2:
Pin 3:

Is the one circled in yellow a 1N4003?
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Old 21st September 2009, 04:33 PM   #7
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Default voltage

input 13,22v

yellow
pin 1 13,19v going to 12v
pin 2 12,47v
pin 3 13,00v

orange
pin 1 0v ground
pin 2 0v going to a diode and then tru a diode and resistor to remote
pin 3 3,7v to a resistor and then to pin 2 on yellow
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Old 21st September 2009, 04:46 PM   #8
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Default transitors

yellow "mps a56"
orange "2n4481"
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Old 21st September 2009, 05:21 PM   #9
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Location: Louisiana
It appears that the orange transistor is defective. Pull it and the amp should not power up. After pulling it, the voltage on pin 2 of the a56 should be the same as the voltage on pin 1. The voltage on pin 3 should essentially be 0v.

Are you sure that the orange one isn't a 2N4401?
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