HIFONICS SAMPSON

mike49504 · 27th January 2011, 01:12 AM

I REPLACED THE OUTPUTS IN THIS AMP ALONG WITH THE DRIVER IC'S AND A 330 OHM RESISTOR ON THE DRIVERBOARD.

WHEN TRYING TO POWER THE AMP UP THE RELAYS CLICK ON FOR A SEC THEN CLICK OFF AND AMP GOES INTO PROTETION.

IF I REMOVE THE OUTPUT DRIVERBOARD AMP POWERS UP BUT THE GREEN LED DOESNT LIGHT WITH OR WITHOUT THE DRIVERBOARD.

ANY IDEAS ON WHERE TO CHECK?

Perry Babin · 27th January 2011, 02:06 AM

Which series sampson?

mike49504 · 27th January 2011, 02:14 AM

XXV Sampson. On the output driverboard i found a bad cap (CL1) i replaced it . Anything else i should check?

Perry Babin · 27th January 2011, 02:22 AM

I'm not familiar with that amp. Photos of the driver board may help.

mike49504 · 27th January 2011, 02:29 AM

Heres a pic of the driverboard

Perry Babin · 27th January 2011, 02:54 AM

On the output terminals of the output filter inductors, do you have DC on any of the inductors just before the relay clicks?

mike49504 · 27th January 2011, 02:58 AM

I put the board back in after replacing that cap. Amp powerd up but after 3 to4 secs after the relay clicked on it sounded like something was shorting on the main board.

I also have Dc voltage on the outputs so i removed the board .

I dont wanna blow the outputs.

mike49504 · 25th February 2011, 04:54 AM

Back to this amp again.

I replaced all outputs and let the amp sit for awhile now when i try power it up it draws excessive current.

If i disable the output section amp powers up fine and idles around 5 amps.

I checked all outputs in the amp they all tested fine I also have the output driverboard removed.

Any thoughts on where to check or do i need to take all outputs back out of the amp and check for leakage?

Perry Babin · 25th February 2011, 06:00 PM

Is there any DC on the output filter inductors when you power it up without the driver board?

27th January 2011, 01:12 AM	#1
mike49504 diyAudio Member Join Date: Sep 2006	HIFONICS SAMPSON I REPLACED THE OUTPUTS IN THIS AMP ALONG WITH THE DRIVER IC'S AND A 330 OHM RESISTOR ON THE DRIVERBOARD. WHEN TRYING TO POWER THE AMP UP THE RELAYS CLICK ON FOR A SEC THEN CLICK OFF AND AMP GOES INTO PROTETION. IF I REMOVE THE OUTPUT DRIVERBOARD AMP POWERS UP BUT THE GREEN LED DOESNT LIGHT WITH OR WITHOUT THE DRIVERBOARD. ANY IDEAS ON WHERE TO CHECK?

27th January 2011, 02:06 AM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Which series sampson? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

27th January 2011, 02:22 AM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	I'm not familiar with that amp. Photos of the driver board may help. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

27th January 2011, 02:54 AM	#6
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	On the output terminals of the output filter inductors, do you have DC on any of the inductors just before the relay clicks? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

25th February 2011, 06:00 PM	#9
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Is there any DC on the output filter inductors when you power it up without the driver board? __________________ 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 January 2011, 02:14 AM	#3
mike49504 diyAudio Member Join Date: Sep 2006	XXV Sampson. On the output driverboard i found a bad cap (CL1) i replaced it . Anything else i should check?

27th January 2011, 02:58 AM	#7
mike49504 diyAudio Member Join Date: Sep 2006	I put the board back in after replacing that cap. Amp powerd up but after 3 to4 secs after the relay clicked on it sounded like something was shorting on the main board. I also have Dc voltage on the outputs so i removed the board . I dont wanna blow the outputs.

25th February 2011, 04:54 AM	#8
mike49504 diyAudio Member Join Date: Sep 2006	Back to this amp again. I replaced all outputs and let the amp sit for awhile now when i try power it up it draws excessive current. If i disable the output section amp powers up fine and idles around 5 amps. I checked all outputs in the amp they all tested fine I also have the output driverboard removed. Any thoughts on where to check or do i need to take all outputs back out of the amp and check for leakage?

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