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27th December 2010, 04:18 AM
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#1 |
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diyAudio Member
Join Date: Sep 2006
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ORION HCCA 250 POP_TOP
This amp's power light comes on and i have 10 volts DC on 1 channel and the other channel doesnt produce sound.
Light is on but i dont think the amp is powerd up all the way or something heres what i have on the power supply fets. K1542 Leg1:0 Leg2:13.8 Leg3:0 TL494 1:0 2:0 3:0 4:5.94 5:0 6:0 7:0 8:0.32 9:0 10:0 11:0.32 12:0.32 13:0 14:0 15:0 15:0 Any ideas? |
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27th December 2010, 05:42 AM
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#2 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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Do you read 0 ohms across the thermal switch?
__________________
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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27th December 2010, 06:01 AM
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#4 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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Follow it back to an MPSA06. Give me the voltage on that transistor.
__________________
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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27th December 2010, 06:15 AM
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#6 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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Does this amp have only one opto-coupler?
If so, it's likely switched on with an A06 driving the A56. If there's an A06 near, post the voltage on it.
__________________
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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27th December 2010, 06:27 AM
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#8 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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Are you sure that you have remote voltage?
If so, follow the circuit to make sure that the remote voltage reaches the resistor network near the A06.
__________________
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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27th December 2010, 06:34 AM
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#10 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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Post the voltages on the resistor network.
Does pin 7 connect to the center leg of the A06?
__________________
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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