150d bench power supply ammeter not working

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  • Tynan Dill
    Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?
    by Tynan Dill
    I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.

    Upon bringing it home and plugging it up, it showed a standby light.

    I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.

    The screen seems to blackout and stay black, but with a flashlight I can see the display.

    With my Playstation 4 connected via HDMI, and running a game I can hear sound.

    Assuming...
    11-22-2024, 01:46 PM
  • shamsudeen
    Hi, Can we use SMPS Bench Power Supply for Laptop troubleshooting?
    by shamsudeen
    Hi all, I just need to know that, can i use SMPS type power supply to test and short circuit detection on a laptop motherboard?
    I saw 95% of repair guys are using only Linear bench power supply. linear bench power supply is pricy, thats why i planned to get one SMPS supply.

    i know that in linear power supply the noise will be very low comparing to SMPS supply....
    07-19-2025, 07:14 AM
  • rabsonnjala
    LENOVO IDEAPAD 100 works only on bench power supply
    by rabsonnjala
    Hie I have a Lenovo laptop
    Lenovo Ideapad 100-14IBY AIVP1-AIVP2 LA-C771P rev 1.0
    it's working only on the bench power supply when I put the battery it doesn't power on. when I also use the original charger it doesn't power. the batter Is fully charged, I used another laptop to charge the battery. but when I use a bench power supply it works perfectly

    below are my readings

    with the original charger only
    JBATT1
    PIN1 0.22V
    PIN2 0.22V
    PIN3 0.45V
    PIN4 0.45V
    PIN5 O.43V
    PIN6 0V
    PIN7 GND
    PIN8...
    11-20-2021, 08:32 AM
  • caspian
    Can Ammeter damage Power Supply?
    by caspian
    Dear Members,

    My DC linear Lab Power Supply does not display the current and voltage correctly. Thus, I am going to connect an Ammeter/Voltmeter Module to the DC output of the power supply. Then, a load will be connected the takes about 1-5volts with 0.1-1.5Amps.
    But I heard If I connect an Ammeter to the output of the power supply, then the Ammeter module is not isolated from the power supply so that the Ammeter can damage the power supply.
    Is this true?

    Thanks

    I have attached the photo of a sample Ammeter module that I am going to buy....
    06-05-2022, 01:42 AM
  • sam_sam_sam
    Modification to a ZD-987 desoldering/soldering station using a external switching power supply
    by sam_sam_sam
    I have been working on this concept for quite some time now with limited success but recently I found a switching power supply that is setup for the voltage that this soldering station needs to operate at however it also needs part of the secondary circuit from the original switching power because you need several voltage rails

    I once tried to get a ZD-915 desoldering station to work on a 18 volt battery power supply but unfortunately things did not go well but I did find a work around but I might try this idea again but going at a little differently more about this another time...
    07-01-2024, 06:34 AM
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