Soundstream SA245 missing resistor

grjr · 26th November 2007, 05:50 AM

I would like to get a Soundstream SA245 amp that I have had forever working. Problem is that it is missing a resistor from the main PCB, could anyone tell me what the value and tolerance is? I saw there is more than one version of this amplifier on ampguts, my particular amp has a single PCB (Rev B, I think) instead of separate PCBs for the PS and different channels. I've included a link to a picture below.

(you can click on the magnifying glass icon to get a closer look)

http://picasaweb.google.com/grjr2000...16658113433074

Perry Babin · 26th November 2007, 07:55 AM

If it connects the RCA shield to the secondary center-tap, it's probably a 10 ohm resistor.

grjr · 22nd December 2007, 10:12 PM

Yes it connects the RCA shield to the PS ground, I've replaced it and now all the rail voltages are in order though a few of the opamps have DC voltages on the outputs now. Could losing the ground through the 10 ohm resistor have caused damage to the opamps?

26th November 2007, 05:50 AM	#1
grjr diyAudio Member Join Date: Sep 2007	Soundstream SA245 missing resistor I would like to get a Soundstream SA245 amp that I have had forever working. Problem is that it is missing a resistor from the main PCB, could anyone tell me what the value and tolerance is? I saw there is more than one version of this amplifier on ampguts, my particular amp has a single PCB (Rev B, I think) instead of separate PCBs for the PS and different channels. I've included a link to a picture below. (you can click on the magnifying glass icon to get a closer look) http://picasaweb.google.com/grjr2000...16658113433074

26th November 2007, 07:55 AM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	If it connects the RCA shield to the secondary center-tap, it's probably a 10 ohm resistor. __________________ 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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22nd December 2007, 10:12 PM	#3
grjr diyAudio Member Join Date: Sep 2007	Yes it connects the RCA shield to the PS ground, I've replaced it and now all the rail voltages are in order though a few of the opamps have DC voltages on the outputs now. Could losing the ground through the 10 ohm resistor have caused damage to the opamps?

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