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23rd December 2011, 01:28 AM
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#1 |
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diyAudio Member
Join Date: Dec 2011
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jl 500\1 power supply doesnt turn on
I have a jl 500\1 rev 10 that doesn't power up and need help. I have opened it up and power fet's and gate resistors test ok. Does anyone have a schematic for this amp?
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23rd December 2011, 04:00 AM
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#2 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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Post the DC voltage on the pins of the connector near the power terminal block. Use the pin numbering shown in the attached image. Copy and paste the following into you reply.
Pin 1: Pin 2: Pin 3: Pin 4: Pin 5: Pin 6: Pin 7: Pin 8: Pin 9: Pin 10:
__________________
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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23rd December 2011, 06:06 AM
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#3 |
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diyAudio Member
Join Date: Dec 2011
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Thanks for the response. Test found # 8 at 0 volts. I will test again and post my results for the rest.
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23rd December 2011, 07:05 PM
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#4 |
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diyAudio Member
Join Date: Dec 2011
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power source 12.9v
pin 1- 4.94v pin 2- -12.55v pin 3- 12.55v pin 4- .5v and rising pin 5- 11.71v pin 6- 12.1v pin 7- .665v pin 8- .3v and droping pin 9- 11.92v pin 10- 7.2mv |
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23rd December 2011, 10:47 PM
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#5 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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What revision is the preamp board?
In the future, please don't use hyphens as separators. They can be mistaken for a negative sign.
__________________
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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23rd December 2011, 11:21 PM
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#6 |
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diyAudio Member
Join Date: Dec 2011
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rev 10
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23rd December 2011, 11:58 PM
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#7 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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What is the DC voltage measured directly across the two points indicated by the arrows.
__________________
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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