SD card not found
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@infiniteloop no I don't how hot it is. But blower is connected to 12V and it works all time it blows on all board
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@masterpc96 Then, I don't think the "desoldering" is related to insufficient cooling. Maybe you should answer @jay_s_uk's question about what 5V you have plugged into the board. Other than that, I can only imagine a defective U1 running very hot - can you touch the chip with your fingertips for a second, or is it too hot for that exercise?
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@masterpc96 Are you sure it is U1 that is the problem? U1 is the Driver 0 stepper driver, not really connected in any way to the SD card socket, and at the other end of the board. Unless it has failed, and somehow shorting internally. Do you get any warnings that the stepper driver is overheating, or any other errors?
Ian
Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth
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Can you post some photos of the soldering around the SD card socket and the repairs you've made?
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@masterpc96 Soldering on the SD card socket looks okay. Is it U20 that you have reflowed? That is a CM1624−08DE which is an EMI Filter for MicroSD Interfaces.
Ian
Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth
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@droftarts Yes U20
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