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Thread: SBEC 5V power supply linear regulators

  1. 06-04-2022, 08:37 PM #1
    chromguy
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    SBEC 5V power supply linear regulators

    I found a few super low drop out (LDO) for SBEC 5V power supply linear regulators. Once I verify functionality, I will share part numbers. Next, I need to figure out the 5V regulator used in the SMEC, The good news is the 5V linear supplies in the SMEC and SBEC seem to be very solid. So far I have not found a faulty one. The 8 V DC-DC supply on the SBEC is known to burn up, I have several that have burnt through the PCB.
    Regards,
    Miles

    DD '87 Sundance T1, SLH with rear disks
    '87 CSX #432 2.5 CB TII, SLH
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  2. 06-04-2022, 10:19 PM #2
    cordes
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    Re: SBEC 5V power supply linear regulators

    I think I just had the 8v supply for the HEP fail on the LM for the Daytona. I really need to dig into this with my father more.
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  3. 06-04-2022, 10:23 PM #3
    Aries_Turbo
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    Re: SBEC 5V power supply linear regulators

    subscribed to keep this thread in my list...

    Quote Originally Posted by turbovanman
    This one is easy, I have myself to blame, I rush things, don't pay attention to gauges when I should, change to much stuff at once then expect miracles, the list is endless.
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  4. 06-05-2022, 07:26 PM #4
    chromguy
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    Re: SBEC 5V power supply linear regulators

    Quote Originally Posted by cordes View Post
    I think I just had the 8v supply for the HEP fail on the LM for the Daytona. I really need to dig into this with my father more.
    Let me know, if you need info. Check the two caps on the Power board. I do find the 8V cap needs replacing
    Regards,
    Miles

    DD '87 Sundance T1, SLH with rear disks
    '87 CSX #432 2.5 CB TII, SLH
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  5. 06-06-2022, 07:13 PM #5
    cordes
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    Re: SBEC 5V power supply linear regulators

    Will do. I think the power module is fine, as the new lm is working well. Or, are you suggesting that the caps on the PM might be killing my LMs?
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  6. 06-06-2022, 07:35 PM #6
    chromguy
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    Re: SBEC 5V power supply linear regulators

    Brian, bring your Power board to SDAC and I will check the caps for you. No charge. If the cap are bad, I will have spare caps with me.
    Regards,
    Miles

    DD '87 Sundance T1, SLH with rear disks
    '87 CSX #432 2.5 CB TII, SLH
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  7. 06-06-2022, 07:49 PM #7
    cordes
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    Re: SBEC 5V power supply linear regulators

    Sounds like a plan. I really appreciate it.
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  8. 06-06-2022, 08:57 PM #8
    chromguy
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    Re: SBEC 5V power supply linear regulators

    Or any other ECU you want tested. I can test caps quickly
    Regards,
    Miles

    DD '87 Sundance T1, SLH with rear disks
    '87 CSX #432 2.5 CB TII, SLH
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