Hi guys,
Can you help me with this issue. I dont know if this was done by Orion or some repair shop. The Outputs are blown and I am cleaning up the amp to replace them. I bought the amp this way and I am in the process of repairing it. Why would this modification be done? And should I keep it this way?
If someone can help me with a service manual, I would greatly appreciate it.
Also in the next picture can someone tell me where I can get a replacement POT for the broken one? Any help would be appreciated.
Thanks in advance.
Can you help me with this issue. I dont know if this was done by Orion or some repair shop. The Outputs are blown and I am cleaning up the amp to replace them. I bought the amp this way and I am in the process of repairing it. Why would this modification be done? And should I keep it this way?
If someone can help me with a service manual, I would greatly appreciate it.
Also in the next picture can someone tell me where I can get a replacement POT for the broken one? Any help would be appreciated.
Thanks in advance.
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I don't think a service manual is available.
The RC network may not be OEM but maybe OEM recommended. The attached photo shows RC networks that were done by the manufacturer.
You should know that (at least some of) these amps have a problem with asymmetrical clipping. The amp will clip differently top and bottom and nowhere near the rails. There may be a fix for it but without the schematic diagram and no adjustment pot for it, it's going to be difficult to repair. This problem was confirmed by another tech. It wasn't a one-off failure.
The original outputs are also out of production. Any that you find could be counterfeit. I used the recommended alternate parts and they failed with no load while I was trying to determine what was causing the asymmetrical clipping. I didn't attempt to do any more with my amp. Told the owner to send it back to Orion.
The RC network may not be OEM but maybe OEM recommended. The attached photo shows RC networks that were done by the manufacturer.
You should know that (at least some of) these amps have a problem with asymmetrical clipping. The amp will clip differently top and bottom and nowhere near the rails. There may be a fix for it but without the schematic diagram and no adjustment pot for it, it's going to be difficult to repair. This problem was confirmed by another tech. It wasn't a one-off failure.
The original outputs are also out of production. Any that you find could be counterfeit. I used the recommended alternate parts and they failed with no load while I was trying to determine what was causing the asymmetrical clipping. I didn't attempt to do any more with my amp. Told the owner to send it back to Orion.
Attachments
Are those outputs original? The one I had used the IRFP4242.
If you can find a way to repair the asymmetrical clipping, you can try to repair it. If you cannot, I don't think you can charge the owner and say that you repaired it. The problem may have been resolved in your amp. I can only tell you what I dealt with with the amp I had.
If you can find a way to repair the asymmetrical clipping, you can try to repair it. If you cannot, I don't think you can charge the owner and say that you repaired it. The problem may have been resolved in your amp. I can only tell you what I dealt with with the amp I had.
You can generally tell if they're original by the solder connections. Hand soldered connections look different from flow soldered connections.
If you only need to replace the 4 outputs and can get them locally, install them to see if there are any other problems.
Mouser may have suitable replacement pot.
If you only need to replace the 4 outputs and can get them locally, install them to see if there are any other problems.
Mouser may have suitable replacement pot.
Finally Got the amp fixed. Works great but I am still looking for the broken Pot on the control card. Does anyone know where I can get one? It cant be found on Mouser or digikey or any of these electronics parts sites. I have done extensive searching. It is a 50K 4-gang pot. ( see the broken Pot in the above pic). ALso tried to contact Orion unsucessfully. There repair center is in Miami not to far from me and they couldnt help me.
Please don't post in a repair thread that was started by someone else unless you are trying to help them.
Click on the red triangle in the lower left corner of your post and ask a moderator to move your post (and any replies to it) to a new thread (my post should be deleted).
After it's moved, I'll try to help you.
Click on the red triangle in the lower left corner of your post and ask a moderator to move your post (and any replies to it) to a new thread (my post should be deleted).
After it's moved, I'll try to help you.
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