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Post by branko on Dec 24, 2022 22:45:25 GMT
I bought a 500mini and after musical signal it turns off. It's not a problem in the rectifier, I reset with the power button. Hear that there are more of these same failures. Someone managed to fix it, but I didn't understand the process. I understand electronics, you can tell me what the problem is. What should I do?
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Post by c64stuff on Dec 24, 2022 23:32:51 GMT
Before anything try using a USB power supply with a higher amp rating. More often than not glitching or crashes on the C64 or Amiga mini as well as the C64 maxi are due to a faulty or inadequate power supply. In fact some units came with too small an amp rated power supply. And also the more stuff you plug in like controllers, USB sticks, or keyboards, the more the need for higher amps. Just make sure the voltage matches.
And many USB power supplies don't even live up to the amps they're rated for because they're made in China and sometimes labeled for more amps than they can actually deliver. Your safest bet in buying a power supply that really does have the amp ability it's rated for is to buy an official one for the raspberry pi. They're pretty strict on quality.
I've had several china made supplies that failed within a year as well, probably again because they could barely deliver the amps they were rated for. If you draw more amps than it can handle electronics tend to get hot, which causes them to fail. Also try a different USB cable
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Post by branko on Dec 25, 2022 6:14:20 GMT
I tried with several power supplies. From iPad to Android TV Box. Seems from what I'm reading nanddb got messed up. It always turns off at same moment, before displaying logo and the red background.
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Post by jj0 on Dec 25, 2022 9:54:20 GMT
Did you by the A500 Mini secondhand? You might be having the same issue as this one where the SoC backup key has been erased. First step would be to connect an USB2UART converter so you can see what's going on. Then post the logs here. If you want to test if it is the issue with the SoC backup key you can interrupt the uboot startup and then load my modified nanda kernel image from USB and boot from that. If your Mini then works OK you can write it into the internal nanda partition. RGL have described how to boot from a custom nanda here. |
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Post by branko2022 on Dec 25, 2022 10:27:42 GMT
Did you by the A500 Mini secondhand? You might be having the same issue as this one where the SoC backup key has been erased. First step would be to connect an USB2UART here [/a].[/quote] The symptoms are the same. I have a USB2UART in a drawer somewhere. Might try to boot via USB. I will study as described. I'm not very good at Linux, I am DOS 😀 |
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Post by jj0 on Dec 25, 2022 13:00:37 GMT
Did you by the A500 Mini secondhand? You might be having the same issue as this one where the SoC backup key has been erased. First step would be to connect an USB2UART here The symptoms are the same. I have a USB2UART in a drawer somewhere. Might try to boot via USB. I will study as described. I'm not very good at Linux, I am DOS 😀 Well, at least you are not Windows  |
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