HP150 Touchscreen again

[Rik Bos]

> > Are those the same LED's used in the HP 16500 series touchscreens ?
> 
> Not having seen inside a 16500, I don't know.
> 
> I have extraced the faulty LED (you can do this without removing the
housing
> from the PCB, thankfully. I didn't fancy having to desolder all
> 21 X-axis LEDs). It's a flat transparent package with a lens 'bubble' on
the output
> side. I think it's commonly called a 'side viewing' package.

Yest those are the same package.

> > As you may know I updated my 16500A to a 16500C version with a upgrade
> > kit from Agilent.
> > Upgrading included changing the touchscreen PCB, so I've an A-version
> > which I don't use or maybe one day will part out.
> 
> Why do you chnage the touchscreen PCB? Is the new one a higher resolution
or
> something?

When updating you get a new front which includes the touchscreen parts..


> 
> > I think change is the LED's are the same, let me know If you want some
> > of them.
> 
> THanks for the offer, but it appears that both RS components and Farnell
sell IR
> LEDs in the same package. I will measure up the old one to check, and if
they are
> the same I'll order a few replacements to try them
> 
> I'd rather have a sourve of new speres than have to depend on what I can
raid
> from old boards.

Yes I agree, but sometimes ...

> 
> -tony

-Rik