[sci.electronics] Need info. on fixing ID100 term

scollins@uswat.uswest.com (Steven Collins) (10/24/90)

 I have a ID-100 video color graphics terminal(ie. a color VT100 term)
 that needs repaired.  When I power up there's a static sounding 
 hissing noise and electrity dancing around at the end of the tube(inside)
 near the gun.  It does not look like an easy and inexpensive fix
 but if any body has an idea of what could be wrong, I'd appreciate
 some help!

Thanks
-Steve
scollins@lookout.uswest.com

myers@hpfcdj.HP.COM (Bob Myers) (10/26/90)

> I have a ID-100 video color graphics terminal(ie. a color VT100 term)
> that needs repaired.  When I power up there's a static sounding 
> hissing noise and electrity dancing around at the end of the tube(inside)
> near the gun.  It does not look like an easy and inexpensive fix
> but if any body has an idea of what could be wrong, I'd appreciate
> some help!

Sounds like a clear case of internal CRT arcing, possibly due to a 
cracked/leaky tube.  The only fix is the replace the CRT, and you're right -
this will be neither easy nor inexpensive.  Sorry for the bad news.



Bob Myers  KC0EW   HP Graphics Tech. Div.|  Opinions expressed here are not
                   Ft. Collins, Colorado |  those of my employer or any other
myers@fc.hp.com                          |  sentient life-form on this planet.