What's the difference between HY5003D vs HY3005D?

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  • twonk9098
    Leovo Thinkbook 14 G2 ITL - Charging issues
    by twonk9098
    Hi,

    I have 2 x Lenovo Thinkbook G2 ITL laptops. They seems to be identical specs, both 11th gen, 1135G7 cpu, both 12gb ram and both 256gb M.2 ssd.
    I have ensured both have the same latest bios and ec firmware.

    One of them works totally fine however the other has charging issues.

    I have compared both motherboards in diode mode and cannot find much of a difference anywhere.
    I have swapped the motherboards over to the other casings and the issue transfers.

    It's behaviour is it will connect at 20v on USB-C and always start to charge....
    04-07-2025, 05:17 PM
  • jezzaaaa
    Identify replacement diode
    by jezzaaaa
    I'm trying to find a replacement diode for one that has gone short.

    I have a generic USB charger that went short circuit to ground on 5V. I found that one of a pair of identical diodes in parallel (and in series with transformer secondary winding) has gone short in both directions, so I suspect it's bad. The marking is CSRS1045, which I believe is a low barrier Schottky with max current 10A and max reverse 45V. I found a spec sheet for CSRS1045-A that has same specs and also says 350mV drop when forward biased.

    I can't find the exact part number for sale. Similar...
    05-09-2023, 11:26 PM
  • reessi
    Acer Alienware Nitro 5 (GH51G LA-L181P Rev: 1C) & Dell Alienware M15 (GDP50 LA-k452P Rev:1) - Both Shorted PCH (SRKMA)!
    by reessi
    Hello:

    I have both these laptops that appeared to have the same fault so I thought I would have a go at replacing the PCH as something to learn, they both are using the same PCH.


    I started on the ACER:

    Up on connecting power no signs of life but current is consumed from the bench power supply and the PCH is hot.
    All the caps on the top of the PCH are showing 0 ohms and the 3.3v rail is shorted.

    I followed the videos from Sorin, Electronics Repair School on Youtube heating from the bottom to install. I practised on around 10 scrap...
    10-29-2024, 11:31 AM
  • CapLeaker
    AcuRite 5 in 1 temperature sensor replacement repair
    by CapLeaker
    Got a new victim:

    AcuRite 5 in 1 Iris outdoor weather station not updating the temperature / humidity anymore. The original sensor is a SHT21. Also there are identical other sensor manufacturers. I chose the HTU21D to replace the original SHT21. Both have identical specs. I've had two failure modes with these sensors.
    A: outside temp stuck at -40? It's cold here at times in Canada, but not that cold!
    B: stuck at some temperature and maybe updating once in 12 hrs or so.

    Easy solution is to go to AcuRite website and purchase the sensor. Right?...
    04-15-2025, 01:32 PM
  • badcap111
    How to read inductor specs?
    by badcap111
    I have a broken samsung galaxy s10 with missing inductor. I want to replace the missing inductor and I have found some vendors. But I don't understand how to read the specifications of the inductor. The specs are:

    INDUCTOR-SMD;470NH,20%,2520,T0.8,0.029OH

    I understand that the inductor is 470 nH with 20% margin, and the size is 2520 or 1008 (imperial measure), but what do T0.8,0.0290OH mean? I can't find any explanation on the web.
    09-12-2023, 01:25 PM
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