I can look at the amp for you to verify. I just got busy a honestly forgot. I take a photo of that section as well as I can at around 1 today.
In this amp I can see my 50hrtz test tone on the speaker terminal, even adjust the altitude with the gain. But it has no audio?
Is the relay engaged?
If you connect the test speaker to the secondary center tap and then touch it to both the positive and negative speaker terminals, do you get signal on both?
If you connect the test speaker to the secondary center tap and then touch it to both the positive and negative speaker terminals, do you get signal on both?
I don't think the relay is engaging, everything else seems ok. Not sure I understand what you mean perry.
You need to determine, definitively, if the relay is engaging.
Do you have a clean audio signal on the output of the output filter inductors?
Do you have a clean audio signal on the output of the output filter inductors?
If you have clean output from the output filter inductors, the problem is likely in the relay drive circuit. Find the following page of the tutorial. It's a bit different but will show you what you are working with.
repair_tutorial\miscellaneousstuff\memphis\memphis 16 st1000d\repairnotesmemphis1000d.htm
The secondary center tap is covered in section 34 of the power supply troubleshooting page.
repair_tutorial\miscellaneousstuff\memphis\memphis 16 st1000d\repairnotesmemphis1000d.htm
The secondary center tap is covered in section 34 of the power supply troubleshooting page.
Yes it has audio if I jump to the secondary tap. Positive on the red winding and ground and the speaker terminal.
#30:
Class D - type 1, scroll down to Replacement Capacitors:
I've tried some of the 10uf BP electrolytics from ebay and they failed. The polyester are better if you can get them to fit.
#31:
If I'm not mistaken, this amp has two independent output sections so you will have signal on both the positive and negative speaker terminals. Get the relay working before worrying about the second output signal.
Class D - type 1, scroll down to Replacement Capacitors:
I've tried some of the 10uf BP electrolytics from ebay and they failed. The polyester are better if you can get them to fit.
#31:
If I'm not mistaken, this amp has two independent output sections so you will have signal on both the positive and negative speaker terminals. Get the relay working before worrying about the second output signal.
I'll read over the section perry and get it working. Do they ever need to be replaced? Like should I order one in the event I'll need it.?
Are you referring to the caps? Yes, they do fail. If you order them, I'd order 3. They commonly fail in pairs and sometimes a 3rd one fails as well.
I don't remember ever having to replace any in the Memphis amps but I have replaced them in other amps. That said, they're not expensive so it's good to have a couple on hand. They fail in pairs in some of the Power Acoustik amps.
So I read over the pages perry, I can't find that transistor anywhere. Or any that are open or shorted. Even if it's marked a different number I tested all of them.on the card and surrounding the relay.
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