Soundstream Rubicon 302

mike49504 · 27th May 2010, 03:06 AM

Im working on this amp it had power supply and output problems. I replaced the NDP6060's in it with NDP7060's I also replaced the outputs in the amp and emitter resistors.

Amps power light will not light up but its producing rail voltage I have bot + -30volts on the outputs.

This is the voltages i get from the SG3524N DO theese appear to be right or do i have a problem still

1:0
2:2.54
3:0.18
4:0
5:0
6:3.46
7:2.17
8:0
9:4.32
10:0
11:6.92
12:18.86
13:18.85
14:6.93
15:18.85
16:5.08

Power supply Fets
1:6.50
2:13.89
3:0

Perry Babin · 27th May 2010, 03:39 AM

It looks OK. If you move the power supply rail switch to the other position, does the LED light up?

mike49504 · 27th May 2010, 03:52 AM

No cant get it to light at all

Perry Babin · 27th May 2010, 03:54 AM

Is that the only problem (does the amp produce clean audio)?

mike49504 · 27th May 2010, 03:58 AM

Amp has DC voltage on left channel and right channel is dead

Perry Babin · 27th May 2010, 04:06 AM

Do you have clean audio an the point where R30/32 connect together?

Do you have clean audio an the point where R33/34 connect together?

You shouldn't have more than a few millivolts of DC on either of these.

mike49504 · 27th May 2010, 04:13 AM

Where r30-32 meet no signal

R33 and 34 meet no signal

0 volts across the emitters

Perry Babin · 27th May 2010, 04:44 AM

Try moving the airbass switch to the other position and check for signal again. You may need to work it and the other switches back and forth to clean their contacts.

mike49504 · 27th May 2010, 04:56 AM

tryed moving the switch about 100 times back and fourth along with the others still no signal.

Perry Babin · 27th May 2010, 07:27 AM

Drive a strong audio signal into the amp and post the op-amp outputs that have signal. You only need to check the output pins of the op-amps.

27th May 2010, 03:06 AM	#1
mike49504 diyAudio Member Join Date: Sep 2006	Soundstream Rubicon 302 Im working on this amp it had power supply and output problems. I replaced the NDP6060's in it with NDP7060's I also replaced the outputs in the amp and emitter resistors. Amps power light will not light up but its producing rail voltage I have bot + -30volts on the outputs. This is the voltages i get from the SG3524N DO theese appear to be right or do i have a problem still 1:0 2:2.54 3:0.18 4:0 5:0 6:3.46 7:2.17 8:0 9:4.32 10:0 11:6.92 12:18.86 13:18.85 14:6.93 15:18.85 16:5.08 Power supply Fets 1:6.50 2:13.89 3:0

27th May 2010, 03:39 AM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	It looks OK. If you move the power supply rail switch to the other position, does the LED light up? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

27th May 2010, 03:54 AM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Is that the only problem (does the amp produce clean audio)? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

27th May 2010, 04:06 AM	#6
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Do you have clean audio an the point where R30/32 connect together? Do you have clean audio an the point where R33/34 connect together? You shouldn't have more than a few millivolts of DC on either of these. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

27th May 2010, 04:44 AM	#8
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Try moving the airbass switch to the other position and check for signal again. You may need to work it and the other switches back and forth to clean their contacts. __________________ 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

27th May 2010, 03:52 AM	#3
mike49504 diyAudio Member Join Date: Sep 2006	No cant get it to light at all

27th May 2010, 03:58 AM	#5
mike49504 diyAudio Member Join Date: Sep 2006	Amp has DC voltage on left channel and right channel is dead

27th May 2010, 04:13 AM	#7
mike49504 diyAudio Member Join Date: Sep 2006	Where r30-32 meet no signal R33 and 34 meet no signal 0 volts across the emitters

27th May 2010, 04:56 AM	#9
mike49504 diyAudio Member Join Date: Sep 2006	tryed moving the switch about 100 times back and fourth along with the others still no signal.

27th May 2010, 07:27 AM	#10
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Drive a strong audio signal into the amp and post the op-amp outputs that have signal. You only need to check the output pins of the op-amps. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

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
SoundStream Rubicon 1002 Turn-On Delay	kds9591	Car Audio	11	26th March 2012 11:47 PM
Soundstream Rubicon 502 Repair Problem	Blazemore	Car Audio	24	29th January 2010 08:18 PM
Soundstream Rubicon 204 amp. need help !	minde16v	Car Audio	3	23rd November 2009 07:38 PM
Soundstream Rubicon 702 Issue	Lobby Ludd	Car Audio	4	24th September 2008 06:21 PM
Soundstream Rubicon 805	audiobahnkid592	Car Audio	16	23rd July 2008 10:13 PM

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