HM322IX No Power USB Only

[Towerrat79]

I have a HM322IX which also had no power. I traced the voltage and found that the chip T056 (Black square one by the USB Connector) was bad. I exchanged this one with one from another USB only drive and it started up and am now recovering the data.. Testing voltage was easy.

With the negative lead of a multimeter on the USB ground, touch the positve lead to one of the eight pads under the T056 chip. It will meausre about 5V.
Directly across from the 8 pads there is a lead coming from under the chip (Leftside) up to a resistor. If you now touch the positive lead on it, it will measure about 4.9 volts.
Mine was showing 0 volts on the resistor, so I changed out the chip and began recovering the data.

[Garry_TS]

Thanks for posting your success story.

Most probably T056 chip is a ZEN056V130A24LS Zener diode micro-assembly so you are right in replacement, without this chip drive will not be powered.

[Amarbir[CDR-Labs]]

Source of the post I have a HM322IX which also had no power. I traced the voltage and found that the chip T056 (Black square one by the USB Connector) was bad. I exchanged this one with one from another USB only drive and it started up and am now recovering the data.. Testing voltage was easy.

With the negative lead of a multimeter on the USB ground, touch the positve lead to one of the eight pads under the T056 chip. It will meausre about 5V.
Directly across from the 8 pads there is a lead coming from under the chip (Leftside) up to a resistor. If you now touch the positive lead on it, it will measure about 4.9 volts.
Mine was showing 0 volts on the resistor, so I changed out the chip and began recovering the data.

Hi ,
Thanks For The Headsup For This Will Remember To Check if i Get This Series Ever

[DataMedics]

Thanks for sharing. I suppose in a pinch you could even just bypass the chip entirely.

[Amarbir[CDR-Labs]]

Source of the post Thanks for sharing. I suppose in a pinch you could even just bypass the chip entirely.

Jared ,
Thats Possible But it Has a PTC Thermister In Series Posing Some Resistance .The Zener Looks As If Its Used For Protection

[DataMedics]

Source of the post

Source of the post Thanks for sharing. I suppose in a pinch you could even just bypass the chip entirely.

Jared ,
Thats Possible But it Has a PTC Thermister In Series Posing Some Resistance .The Zener Looks As If Its Used For Protection

I have no doubt it's part of the protection circuit. I'm just saying it'd probably work without it in a pinch. That zener diode ranges from .12 to .16 ohms, so you could just throw a .15 Ohm resistor on there I suppose too. Though in all honesty I'd probably just move the ROM over to a SATA board and be done with it. PCB repairs has never been much interest to me when it's so easy to just replace them.

[300ddr]

Thanks very much Frank, great info to have.

[Towerrat79]

The problem with this PCB is (for me) that there was no External ROM. So it was a quick fix just to move the one component.

[Amarbir[CDR-Labs]]

Source of the post The problem with this PCB is (for me) that there was no External ROM. So it was a quick fix just to move the one component.

Well,
i am missing your new posts to your youtube channel

[Towerrat79]

I do have to look for some new topics of interest. I will most likely do one on moving a task from the DDI over to the PC3K and continue on where one left off.

[Amarbir[CDR-Labs]]

Source of the post I do have to look for some new topics of interest. I will most likely do one on moving a task from the DDI over to the PC3K and continue on where one left off.

Frank,
Can You Do It For DDI On My Request some Basic and Advance Features

[Towerrat79]

Hello Amarbir,
Email me with what you would like and I will try and do it for you. info@gefund-it.de
Frank

[Amarbir[CDR-Labs]]

Source of the post Hello Amarbir,
Email me with what you would like and I will try and do it for you. info@gefund-it.de
Frank

Hi Frank ,
Thanks a Tonn Boss I will Next Week