Sony XM-475GSX

mike49504 · 28th October 2011, 03:40 PM

2 OF THE OUTPUTS WERE BAD IN THIS AMP ( Q110,Q109).

DOES ANYONE KNOW THE BOARD LOCATIONS FOR THE DRIVERS FOR THEESE OUTPUTS??

BECAUSE AS SOON AS I REPLACE THEM THEY BURN UP WITHIN 2 SECS

Perry Babin · 28th October 2011, 04:04 PM

I have nothing on this amp but you can find the drivers if you follow the traces back from the base/gate of the output transistors.

mike49504 · 28th October 2011, 04:50 PM

ok i found them..

There are 4 pots on the board near the outputs.. 1 for each channel ..

Bias pots ?

Perry Babin · 28th October 2011, 07:09 PM

They are probably bias pots. You can determine what they are by adjusting them on a working channel.

mike49504 · 29th October 2011, 03:09 PM

Is there a good sub for a C4015 transistor ?

Perry Babin · 30th October 2011, 09:11 AM

How is it being used?

mike49504 · 19th November 2011, 05:25 AM

Ok i replaced the transistor C4015 and replaced the outputs in the defective channel..

Now when i try to power it up the Over current light comes on and shuts the amp down..

If i remove the outputs from the channel it powers up fine..

Any ideas?

Perry Babin · 19th November 2011, 05:31 AM

Are the emitter resistors within tolerance?

If you power it up through a current limiter, does it go into protect?

mike49504 · 19th November 2011, 04:22 PM

Emitter resistors are within tolerance..

If i try powering it up thru a current limiter the amp will power up but will draw excessive current

mike49504 · 19th November 2011, 04:49 PM

Ok theres a problem in another channel that i found also..

All outputs are removed and the amp is powerd up thru a limiter and it idles perfect..

The 540's control the negative rail ??

28th October 2011, 03:40 PM	#1
mike49504 diyAudio Member Join Date: Sep 2006	Sony XM-475GSX 2 OF THE OUTPUTS WERE BAD IN THIS AMP ( Q110,Q109). DOES ANYONE KNOW THE BOARD LOCATIONS FOR THE DRIVERS FOR THEESE OUTPUTS?? BECAUSE AS SOON AS I REPLACE THEM THEY BURN UP WITHIN 2 SECS

28th October 2011, 04:04 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	I have nothing on this amp but you can find the drivers if you follow the traces back from the base/gate of the output transistors. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

28th October 2011, 07:09 PM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	They are probably bias pots. You can determine what they are by adjusting them on a working channel. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

30th October 2011, 09:11 AM	#6
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	How is it being used? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

19th November 2011, 05:31 AM	#8
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Are the emitter resistors within tolerance? If you power it up through a current limiter, does it go into protect? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

28th October 2011, 04:50 PM	#3
mike49504 diyAudio Member Join Date: Sep 2006	ok i found them.. There are 4 pots on the board near the outputs.. 1 for each channel .. Bias pots ?

29th October 2011, 03:09 PM	#5
mike49504 diyAudio Member Join Date: Sep 2006	Is there a good sub for a C4015 transistor ?

19th November 2011, 05:25 AM	#7
mike49504 diyAudio Member Join Date: Sep 2006	Ok i replaced the transistor C4015 and replaced the outputs in the defective channel.. Now when i try to power it up the Over current light comes on and shuts the amp down.. If i remove the outputs from the channel it powers up fine.. Any ideas?

19th November 2011, 04:22 PM	#9
mike49504 diyAudio Member Join Date: Sep 2006	Emitter resistors are within tolerance.. If i try powering it up thru a current limiter the amp will power up but will draw excessive current

19th November 2011, 04:49 PM	#10
mike49504 diyAudio Member Join Date: Sep 2006	Ok theres a problem in another channel that i found also.. All outputs are removed and the amp is powerd up thru a limiter and it idles perfect.. The 540's control the negative rail ??

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Sony XM-GTA2022	mike49504	Car Audio	4	12th March 2011 04:05 AM
SONY XM-2165GTX help	detrum	Car Audio	1	7th September 2010 01:14 AM
Sony XM-554ZR	mike49504	Car Audio	1	1st May 2010 09:38 AM
Sony XM-D1000P5	mike49504	Car Audio	28	19th April 2010 01:56 AM
Sony XM-4520	croccodillo	Car Audio	0	14th December 2005 09:19 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read