Sony XM-554ZR

mike49504 · 30th April 2010, 05:12 PM

I got this in for repair. When i power it up the power light is red Not sure if it means the amp is on or in prtection mode. Amp has no output at all.

Perry Babin · 1st May 2010, 09:38 AM

Red appears to be the protection indicator. It also has a green LED.

A shorted output transistor is the most likely fault.

30th April 2010, 05:12 PM	#1
mike49504 diyAudio Member Join Date: Sep 2006	Sony XM-554ZR I got this in for repair. When i power it up the power light is red Not sure if it means the amp is on or in prtection mode. Amp has no output at all.

1st May 2010, 09:38 AM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Red appears to be the protection indicator. It also has a green LED. A shorted output transistor is the most likely fault. __________________ 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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