As long as the screw is tight enough and the connection isn't loose - there shouldn't be a problem, I highly doubt that reason alone is what killed the PSU, what is your input AC voltage?
Also just check the screw its too long as its going through and possibly touching components.
good point.
I must ask does the room run hot?
35C or 90f or higher.
is the gear clocked high speed vs medium speed.
I have s17pros they like medium or low when it is really hot.
Maybe you have it on high in a hot room.
Maybe you have 205 or 208 volts vs 220-240
if volts sag lower it kills psu's
It's a 220v and yes I used long screws long time ago and it's will take less than a minute to change the screws colour because of heat for the AC voltage am living in Kuwait so 220v is the standard and I followed mikey post about his room step by step so I have a cold and hot rooms the temperature in the cold room runs around 24-28C and for the devices setting its all runs on normal no over clocks at all.
The spare parts arrived today I'll replace the power supply and make sure to send the old one for testing.
ok done replacing it with OEM one and replaced one of the fans since I cut the wire, it's work fine I noticed a high pool rejection might be fixed by the next few hours if not I'll rechecking it again.
after 6 hours of working I lost a fan 😪
===========================================Miner log===========================================
1970-01-01 00:00:09 Miner compile time: Fri Dec 11 11:23:44 CST 2020 type: Antminer S19 Pro
1970-01-01 00:00:10 This is fix-freq version
1970-01-01 00:00:10 Miner compile time: Fri Dec 11 11:23:44 CST 2020 type: Antminer S19 Pro
1970-01-01 00:00:10 commit version: 1821c90 2020-11-16 16:05:37, build by: jenkins 2020-12-11 11:35:43
1970-01-01 00:00:10 opt_multi_version = 1
1970-01-01 00:00:10 opt_bitmain_ab = 1
1970-01-01 00:00:10 mid_auto_gen = 0
1970-01-01 00:00:10 opt_bitmain_work_mode = 0
1970-01-01 00:00:10 mmap fpga_mem_addr_hal = 0xb5800000
1970-01-01 00:00:10 HASH_ON_PLUG V9 = 0x7
1970-01-01 00:00:10 Note: front fan is power on!
1970-01-01 00:00:10 Note: rear fan is power on!
1970-01-01 00:00:10 start the http log.
1970-01-01 00:00:10 httpListenThread start ret=0
1970-01-01 00:00:10 start listen on 6060 ...
1970-01-01 00:00:10 load machine NBP1901 conf
1970-01-01 00:00:10 machine : NBP1901
1970-01-01 00:00:10 chain_num 4, chain_domain_num 38, chain_asic_num 114, domain_asic_num 3
1970-01-01 00:00:16 miner ID : 8114944857104814
1970-01-01 00:00:16 FPGA Version = 0xB031
1970-01-01 00:00:16 HASH_ON_PLUG V9 = 0x7
1970-01-01 00:00:16 ==========================capability start==========================
1970-01-01 00:00:16 board num = 3
1970-01-01 00:00:16 board id = 0, chain num = 1
1970-01-01 00:00:16 chain id = 0
1970-01-01 00:00:16 board id = 1, chain num = 1
1970-01-01 00:00:16 chain id = 1
1970-01-01 00:00:16 board id = 2, chain num = 1
1970-01-01 00:00:16 chain id = 2
1970-01-01 00:00:16 ==========================capability end============================
1970-01-01 00:00:16 chain num = 3
2021-07-27 21:14:53 [chain 0]
2021-07-27 21:14:53 0x0000 11 4A A6 B4 FC 5D 3B 06 BC A2 07 A9 DD CB 76 B3
2021-07-27 21:14:53 0x0010 8F 7D DB 5F A7 B9 4A BA 0E 54 4C 06 CF 33 C0 73
2021-07-27 21:14:53 0x0020 BA AD DE 1F E6 4A 29 62 41 E6 44 CE 57 5A 5E 74
2021-07-27 21:14:53 0x0030 B9 6E 4A 70 D6 A6 2F FE 89 39 B6 C5 DF EF 42 01
2021-07-27 21:14:53 0x0040 01 EF 91 C7 1A 04 74 D9 CA 8C FF FF FF FF FF FF
2021-07-27 21:14:53 0x0050 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:53 0x0060 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:53 0x0070 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:53 0x0080 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:53 0x0090 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:53 0x00A0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:53 0x00B0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:53 0x00C0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:53 0x00D0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:53 0x00E0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:53 0x00F0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 5A
2021-07-27 21:14:53
2021-07-27 21:14:55 [chain 1]
2021-07-27 21:14:55 0x0000 11 4A 2C D1 DB C7 7C 2B 4A C7 C0 C2 97 66 08 A9
2021-07-27 21:14:55 0x0010 7C 85 BF 6D ED 5E 10 75 98 25 29 F1 EB FD 37 1E
2021-07-27 21:14:55 0x0020 F4 2D 64 02 CD A9 AD E0 4E 4D D2 FB C8 09 7F A9
2021-07-27 21:14:55 0x0030 F1 1A E3 35 20 A0 83 A2 0E 93 BC E7 D7 D7 CD FD
2021-07-27 21:14:55 0x0040 74 04 DC 92 34 03 AE 7B B9 9F FF FF FF FF FF FF
2021-07-27 21:14:55 0x0050 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:55 0x0060 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:55 0x0070 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:55 0x0080 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:55 0x0090 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:55 0x00A0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:55 0x00B0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:55 0x00C0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:55 0x00D0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:55 0x00E0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:55 0x00F0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 5A
2021-07-27 21:14:55
2021-07-27 21:14:57 [chain 2]
2021-07-27 21:14:57 0x0000 11 4A 43 7C 58 3C 04 5A 84 7E EC BE 94 F0 BF 99
2021-07-27 21:14:57 0x0010 4D DF 78 39 E0 9D 60 44 68 AE 9D 16 25 50 85 E4
2021-07-27 21:14:57 0x0020 4A EF 84 8F EB 42 3A 8E 5F 27 0F 62 86 29 77 C7
2021-07-27 21:14:57 0x0030 77 08 2A 8F C1 2F 37 10 6F 16 EF 30 D4 3A 52 60
2021-07-27 21:14:57 0x0040 27 EC 42 54 8F 48 FD 35 8B 4D FF FF FF FF FF FF
2021-07-27 21:14:57 0x0050 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:57 0x0060 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:57 0x0070 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:57 0x0080 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:57 0x0090 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:57 0x00A0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:57 0x00B0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:57 0x00C0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:57 0x00D0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:57 0x00E0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
2021-07-27 21:14:57 0x00F0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 5A
2021-07-27 21:14:57
2021-07-27 21:14:57 fan_eft : 0 fan_pwm : 100
2021-07-27 21:14:57 create thread
2021-07-27 21:14:57 fixed working voltage = 1260
2021-07-27 21:14:57 Chain [0] PCB Version: 0x0100
2021-07-27 21:14:57 Chain [0] BOM Version: 0x0100
2021-07-27 21:14:57 Chain [1] PCB Version: 0x0100
2021-07-27 21:14:57 Chain [1] BOM Version: 0x0100
2021-07-27 21:14:57 Chain [2] PCB Version: 0x0100
2021-07-27 21:14:57 Chain [2] BOM Version: 0x0100
2021-07-27 21:15:01 Fan check passed.
2021-07-27 21:15:02 chain[0] PIC jump to app
2021-07-27 21:15:03 Check chain[0] PIC fw version=0x89
2021-07-27 21:15:04 chain[1] PIC jump to app
2021-07-27 21:15:06 Check chain[1] PIC fw version=0x89
2021-07-27 21:15:07 chain[2] PIC jump to app
2021-07-27 21:15:09 Check chain[2] PIC fw version=0x89
2021-07-27 21:15:09 create thread
2021-07-27 21:15:09 max sensor num = 4
2021-07-27 21:15:09 temperature_monitor_thread start...
2021-07-27 21:15:13 power type version: 0x0071
2021-07-27 21:15:13 Enter sleep to make sure power release finish.
2021-07-27 21:15:44 Slept 30 seconds, diff = 4.
2021-07-27 21:15:44 set_voltage_by_steps to 1500.
2021-07-27 21:15:49 start up min temp by 75a = 32
2021-07-27 21:15:49 set UART baud to 115200
2021-07-27 21:15:54 chain avg vol rise to 15.21
2021-07-27 21:15:58 Chain[0]: find 114 asic, times 0
2021-07-27 21:16:05 Chain[1]: find 114 asic, times 0
2021-07-27 21:16:13 Chain[2]: find 114 asic, times 0
2021-07-27 21:16:13 pulse_mode = 1, ccdly_sel = 1, pwth_sel = 1
2021-07-27 21:16:18 min freq in eeprom = 525
2021-07-27 21:16:18 fixed frequency is 525
2021-07-27 21:16:18 Bring up temperature is 31
2021-07-27 21:16:18 set UART baud to 12000000
2021-07-27 21:16:18 set_voltage_by_steps to 1260.
2021-07-27 21:16:25 STATUS_INITED: soc init done!
2021-07-27 21:16:25 create thread
2021-07-27 21:16:25 create thread
2021-07-27 21:16:28 start to init...
2021-07-27 21:16:36 Init done!
2021-07-27 21:16:36 STATUS_OKAY
2021-07-27 21:16:36 start the cached job
2021-07-27 21:16:36 Version num 8
2021-07-27 21:16:36 Mask num 0xe000
2021-07-27 21:16:36 freq = 525, percent = 90, hcn = 12480, timeout = 449
2021-07-27 21:16:36 set_start_time_point total_tv_start_sys=122 total_tv_end_sys=123
2021-07-28 03:10:20 Error, fan lost, only find 3 (< 4)
2021-07-28 03:10:20 fan_id = 0, fan_speed = 4560
2021-07-28 03:10:20 fan_id = 1, fan_speed = 0
2021-07-28 03:10:20 fan_id = 2, fan_speed = 5160
2021-07-28 03:10:20 fan_id = 3, fan_speed = 5160
2021-07-28 03:10:20 Sweep error string = F:1.
2021-07-28 03:10:20 ERROR_FAN_LOST: fan lost
2021-07-28 03:10:20 stop_mining: fan lost
2021-07-28 03:10:20 uninit_temp_info
2021-07-28 03:10:20 do not read temp anymore...
2021-07-28 03:10:20 cancel thread
2021-07-28 03:10:20 cancel thread
2021-07-28 03:10:20 cancel thread
2021-07-28 03:10:20 ****power off hashboard****
2021-07-28 03:10:22 temp monitor thread exit
2021-07-28 03:16:44 chain 0 hash rate 21373.00 low in 15 mins
2021-07-28 03:16:44 chain 1 hash rate 21556.00 low in 15 mins
2021-07-28 03:16:44 chain 2 hash rate 21688.00 low in 15 mins
2021-07-28 03:31:45 chain 0 hash rate 0.00 low in 15 mins
2021-07-28 03:31:45 chain 1 hash rate 0.00 low in 15 mins
2021-07-28 03:31:45 chain 2 hash rate 0.00 low in 15 mins