[volt-nuts] HP 3458A Mem test 1 hight. How do you read 32K memory chips?

[John Phillips]

Thanks...
I have been looking at the
http://www.ebay.com/itm/Universal-EEPROM-Flash-SPI-BIOS-24-25-BR90-93-USB-Programmer-6000-CHIPS-SP8-B-/371031966902?pt=LH_DefaultDomain_0&hash=item56633a84b6

Do you think that would do the chips?


On Wed, Aug 20, 2014 at 4:25 PM, Todd Micallef <tmicallef at gmail.com> wrote:

> John,
>
> Don't forget to measure your 5V power supply output. I doubt you are having
> a problem with it but the NVRAM write is disabled below a certain voltage
> (~4.25v)
>
> Todd
>
>
> On Wed, Aug 20, 2014 at 6:50 PM, <acbern at gmx.de> wrote:
>
> > the easy way to read nvram through usb is a usb-programmer that has your
> > ram in its list of supported devices:-)
> >
> > this will not solve your problem though. if you reboot the unit after the
> > first error messsage, amd the problem still exists, it is probably not
> with
> > the nvram. then it could be things like bus drive, chip select logic...
> > ne way to avoid spending 3k is to bus the cpu board, this is cheaper.
> >
> >
> >
> > > Gesendet: Mittwoch, 20. August 2014 um 22:37 Uhr
> > > Von: "John Phillips" <john.phillips0 at gmail.com>
> > > An: "Discussion of precise voltage measurement" <volt-nuts at febo.com>
> > > Betreff: Re: [volt-nuts] HP 3458A Mem test 1 hight. How do you read 32K
> > memory chips?
> > >
> > > Yes they are DEI220Y-150 and DSI230Y-150
> > > On Aug 20, 2014 4:09 PM, "J. L. Trantham" <jltran at att.net> wrote:
> > >
> > > > John,
> > > >
> > > > Which chips are these?  Dallas NVRAM's?
> > > >
> > > > Do you have a part number?  They can probably be read and programmed
> > with
> > > > the appropriate chip programmer.
> > > >
> > > > Joe
> > > >
> > > >
> > > > -----Original Message-----
> > > > From: volt-nuts-bounces at febo.com [mailto:volt-nuts-bounces at febo.com]
> > On
> > > > Behalf Of John Phillips
> > > > Sent: Wednesday, August 20, 2014 3:54 PM
> > > > To: Discussion of precise voltage measurement
> > > > Subject: [volt-nuts] HP 3458A Mem test 1 hight. How do you read 32K
> > memory
> > > > chips?
> > > >
> > > > Hi,
> > > > I have removed my 32k memory chips form my 3458A. Doe anyone have an
> > easy
> > > > way to connect them to a windows computer. USB would be my preferred
> > > > connection to a 28 and 24  pin socket. I would like to be able to
> read
> > and
> > > > write to the chips to validate the data.
> > > > I have replace the chips and still get Mem test 1 High on start up.
> > > > ​I really do not want to spend close to $3000 for KeySight to fix
> > this.​
> > > >
> > > > --
> > > >
> > > > *John Phillips*
> > > > _______________________________________________
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-- 

*John Phillips*