Help with Orion amp repair - Page 2

allorion · 15th September 2010, 10:20 PM

I just tested it for audio output. I'm using my computer for source signal and the amp is bridged into an 8 Ohm speaker. It does produce sound. The music is clearly audible and it had no problem making power. I wouldn't exactly call it clean. It has a hiss [similar to white noise] at low volume and no volume with or without source connected I don't recall it being affected by the gain control. It probably wouldn't be an issue in my application, but it does have the potential to run a set of seperates up front sometime down the road. The hiss would drive me nuts in that application. I'm excited to hear it play and grateful for the help getting it to this point. Thanks all. How complicated is it to diagnose the hiss, or should I replace the known defective components at this point and then continue the diagnosis as they may be causing it?

Alan

Perry Babin · 16th September 2010, 02:52 PM

Do you have an oscilloscope?

allorion · 16th September 2010, 10:41 PM

no, but i may have access to one. I will need to see what i can do. Anything I can do without one? Thanks - Alan

Perry Babin · 16th September 2010, 11:06 PM

It would be easier if you had a scope.

16th September 2010, 02:52 PM	#12
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Do you have an oscilloscope? __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

16th September 2010, 11:06 PM	#14
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	It would be easier if you had a scope. __________________ 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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15th September 2010, 10:20 PM	#11
allorion diyAudio Member Join Date: Sep 2010	I just tested it for audio output. I'm using my computer for source signal and the amp is bridged into an 8 Ohm speaker. It does produce sound. The music is clearly audible and it had no problem making power. I wouldn't exactly call it clean. It has a hiss [similar to white noise] at low volume and no volume with or without source connected I don't recall it being affected by the gain control. It probably wouldn't be an issue in my application, but it does have the potential to run a set of seperates up front sometime down the road. The hiss would drive me nuts in that application. I'm excited to hear it play and grateful for the help getting it to this point. Thanks all. How complicated is it to diagnose the hiss, or should I replace the known defective components at this point and then continue the diagnosis as they may be causing it? Alan

16th September 2010, 10:41 PM	#13
allorion diyAudio Member Join Date: Sep 2010	no, but i may have access to one. I will need to see what i can do. Anything I can do without one? Thanks - Alan