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#1 |
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diyAudio Member
Join Date: Sep 2006
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Working on this amp the blue light comes on but amp isnt powering up
Heres the voltages on the 494 1:0 2:4.76 3:4.70 4:0 5:0 6:0 7:0 8:0 9:0 10:0 11:0 12:0 13:0 14:0 15:0 16:0 Any ideas? |
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#2 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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What's the DC voltage on the three terminals of Q9101?
__________________
Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links |
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#3 |
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diyAudio Member
Join Date: Sep 2006
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LEG1:0
LEG2:0.24 LEG3:0 |
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#4 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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Blown fuses?
__________________
Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links |
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#5 |
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diyAudio Member
Join Date: Sep 2006
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Ok replaced battery in my meter
ON Q9101 1:13.93 2:0.52 3:13.83 |
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#6 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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DC voltage on collector of Q9102?
__________________
Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links |
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#7 |
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diyAudio Member
Join Date: Sep 2006
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not sure which leg is what but the top leg is 13.86, bottom 2 legs 0 volts
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#8 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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Email me. You need to compare the voltages on the microcontroller to see which are significantly different than they should be.
__________________
Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links |
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#9 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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What is the DC voltage on each end of R9106 (black probe on ground)?
__________________
Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links |
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#10 |
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diyAudio Member
Join Date: Sep 2006
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0 volts on both ends
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