I know that my dim segments problem was definitely the display IC, and not the driver IC.  I doubt seriously that resoldering pins would help my problem.  I have no experience with this type of display that is used in the 3458A.  I am not sure exactly what the technology is called.  You used the term "VFD", so what does that mean?  Agilent/HP CLIP calls the display an "IC Display - FIP".  I am not sure what the "FIP" means.  The original display I took out was made by Noritake.  It is obviously a custom display for HP.  There is a DC/DC converter to power the display and it is obvious that this is supplying a higher voltage to the IC, maybe 50 volts or so.  There are two caps on the high voltage supply lines that are 47 ufd/63v.

Frank: I know that my dim segments problem was definitely the display IC, and not the driver IC. I doubt seriously that resoldering pins would help my problem. I have no experience with this type of display that is used in the 3458A. I am not sure exactly what the technology is called. You used the term "VFD", so what does that mean? Agilent/HP CLIP calls the display an "IC Display - FIP". I am not sure what the "FIP" means. The original display I took out was made by Noritake. It is obviously a custom display for HP. There is a DC/DC converter to power the display and it is obvious that this is supplying a higher voltage to the IC, maybe 50 volts or so. There are two caps on the high voltage supply lines that are 47 ufd/63v. Bill

  I know that my dim segments problem was definitely the display IC, and not the driver IC.  I doubt seriously that resoldering pins would help my problem.  I have no experience with this type of display that is used in the 3458A.  I am not sure exactly what the technology is called.  You used the term "VFD", so what does that mean?  Agilent/HP CLIP calls the display an "IC Display - FIP".  I am not sure what the "FIP" means.  The original display I took out was made by Noritake.  It is obviously a custom display for HP.  There is a DC/DC converter to power the display and it is obvious that this is supplying a higher voltage to the IC, maybe 50 volts or so.  There are two caps on the high voltage supply lines that are 47 ufd/63v.

On 10/10/2011 4:00 PM, Bill Gold wrote: > Frank: > > I know that my dim segments problem was definitely the display IC, and not the driver IC. I doubt seriously that resoldering pins would help my problem. I have no experience with this type of display that is used in the 3458A. I am not sure exactly what the technology is called. You used the term "VFD", so what does that mean? Agilent/HP CLIP calls the display an "IC Display - FIP". I am not sure what the "FIP" means. The original display I took out was made by Noritake. It is obviously a custom display for HP. There is a DC/DC converter to power the display and it is obvious that this is supplying a higher voltage to the IC, maybe 50 volts or so. There are two caps on the high voltage supply lines that are 47 ufd/63v. > > Bill > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there. > VFD - vacuum fluorescent display Randy