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E-2809 Frontier 570

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when i checked my PS1 and PS2 alpha ii on another machine it work's fine so i am sure that's not the alpha4s problm i suspect the pwr 23 the second thing that when i swap my CTL 23 on ANOTHER machine the second machine gave me now E_2809 and E2888 E2889 E2890 i checked the fuses on the LDD23 no fuse is blowout i confused please your help

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Hello. Can be missing AC on power supply inputs, power suppliers doesn't work, faulty PWR23 board, bad contacts, missing control signals from processor board, or laser board. You have two errors - PS1 and PS2. Check do you have AC voltage on power supply input. Look at fans inside power suppliers. They should rotate. 
If have AC on inputs and both power supplier internal fans rotate then which LEDs are light on power suppliers outputs. 

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