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如题，最近从东南亚闲鱼Carousell白菜价收了一台没电源的Dell Optiplex 5050带i7-7700，因为机器配的是DELL专有规格的电源，凭着不见兔子不撒鹰的精神，再配上电源前先随便拿了一个 台达DPS 350JB-1B的SFX电源（后简称台达350W电源）测试，本以为350瓦电源亮机和过戴尔的板载自检压测应该没问题，结果只要一压测到CPU和内存就自动关机， 再想重新启动就要断电给主板放干净电才行。
先用一台普通的500瓦ATX 电源替换台达350W， 上述问题就都消失了，开关机，压测，一切正常。说明CPU没问题。
然后由于怀疑是SFX电源有故障，就换了一块奔腾G4400上去配台达350W电源，也都是开关机，压测一切正常。
电池的参数如下链接所示：
https://pdf1.alldatasheet.com/da ... TA/DPS-350AB-4.html
FEATURES
• Application: Desktop PC
• 80mm fan
• Comply with Intel ATX12V 2.0
• Remote On/Off
• Low acoustics noise
• High reliability
• Fan speed control
• Short circuit protection
• Over voltage protection
• Over current protection
• Passive PFC @ 230Vac to meet EN61000-3-2
ENVIRONMENTAL
• Operating ambient temperature: 10~50 ºC
• Operating relative humidity: 5~85%
• Storage ambient temperature: -40~70ºC
• Storage relative humidity: 5~95%
• Altitude: 10,000~50,000 feet
• MTBF: > 100K hours @ max. load & 25ºC ambient conditions
ELECTRICAL SPECIFICATIONS
INPUT
• Input Range 180~265Vac, single phase
• Frequency 47~63Hz
• Input Current <5A @ 230Vac
• Efficiency >70% @ 230Vac
• EMI/RFI CISPR 22 Class B, FCC
OUTPUT
• Maximum Power 350 Watts
• Holdup Time >17mS @ 230Vac
• Rise Time 0.2~20mS
• Leakage Current <1.5mA @ 240Vac
• Overvoltage Protection: +3.3V, +5V, +12V
• Overcurrent Protection: < 240VA
• Short-Circuit Protection: Latch off
• Power Good Signal: TTL compatible on delay 100mS to 500mS, off delay 1mS.
目前来看，猜测很可能是台达350瓦和i7-7700所需功率不匹配，但是从参数上又看不出到底是哪里不对
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310112100042806
发表于 2024-6-15 11:33
