Sony XM-2002GTW

mike49504 · 26th July 2011, 10:10 PM

This amp is stuck in protection mode all outputs test fine..

Heres what i have on the 594

Pin 1:13.40
Pin 2:3.04
Pin 3:4.85
Pin 4:0.47
Pin 5:1.47
Pin 6:3.66
Pin 7:0
Pin 8:13.91
Pin 9:0.46
Pin 10:0.08
Pin 11:13.91
Pin 12:13.91
Pin 13:5.00
Pin 14:5.00
Pin 15:3.04
Pin 16:0

Any Ideas ??

Perry Babin · 26th July 2011, 11:15 PM

Pull Q801. Does it still go into protect mode?

Be careful. Be prepared for excessive current draw.

mike49504 · 11:24 PM

found it And pulled Q801 amp powers up and plays clean audio

Perry Babin · 26th July 2011, 11:26 PM

Reinstall it and pull Q114 and Q214 (one at a time) to see which one is causing the amp to shut down.

mike49504 · 26th July 2011, 11:41 PM

Q114 is making it go into protect

Perry Babin · 26th July 2011, 11:43 PM

Is Q114 leaking/shorted?

If you install the transistor that in the location Q214 in place of Q114, does the amp go into protect mode again?

mike49504 · 26th July 2011, 11:53 PM

If i put Q214 in Q114's spot amp goes back into protection

Perry Babin · 27th July 2011, 12:00 AM

Check for emitter resistors that are out of tolerance and broken solder connections on the emitter resistors.

mike49504 · 27th July 2011, 12:45 AM

Checked all emitter resistors and touched up the solder on all of them Amps still in protection

Perry Babin · 27th July 2011, 01:54 AM

What is the DC voltage with the black probe on the source of Q109 and the red probe on the source of Q108?

26th July 2011, 10:10 PM	#1
mike49504 diyAudio Member Join Date: Sep 2006	Sony XM-2002GTW This amp is stuck in protection mode all outputs test fine.. Heres what i have on the 594 Pin 1:13.40 Pin 2:3.04 Pin 3:4.85 Pin 4:0.47 Pin 5:1.47 Pin 6:3.66 Pin 7:0 Pin 8:13.91 Pin 9:0.46 Pin 10:0.08 Pin 11:13.91 Pin 12:13.91 Pin 13:5.00 Pin 14:5.00 Pin 15:3.04 Pin 16:0 Any Ideas ??

26th July 2011, 11:15 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Pull Q801. Does it still go into protect mode? Be careful. Be prepared for excessive current draw. __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

26th July 2011, 11:20 PM	#3
mike49504 diyAudio Member Join Date: Sep 2006	found it And pulled Q801 amp powers up and plays clean audio Last edited by mike49504; 26th July 2011 at 11:24 PM.

26th July 2011, 11:26 PM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Reinstall it and pull Q114 and Q214 (one at a time) to see which one is causing the amp to shut down. __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

26th July 2011, 11:43 PM	#6
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Is Q114 leaking/shorted? If you install the transistor that in the location Q214 in place of Q114, does the amp go into protect mode again? __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links


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26th July 2011, 11:41 PM	#5
mike49504 diyAudio Member Join Date: Sep 2006	Q114 is making it go into protect

26th July 2011, 11:53 PM	#7
mike49504 diyAudio Member Join Date: Sep 2006	If i put Q214 in Q114's spot amp goes back into protection

27th July 2011, 12:00 AM	#8
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Check for emitter resistors that are out of tolerance and broken solder connections on the emitter resistors. __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

27th July 2011, 12:45 AM	#9
mike49504 diyAudio Member Join Date: Sep 2006	Checked all emitter resistors and touched up the solder on all of them Amps still in protection

27th July 2011, 01:54 AM	#10
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	What is the DC voltage with the black probe on the source of Q109 and the red probe on the source of Q108? __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

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