[TechAssist] Re: INFOCUS #LP290 LCD Projector-Lamp won't start

As far as I know Infocus has an exclusive service
contract with U.P.S. NO parts or info available.
YEP! Brown is now our competator.
As is I.B.M.
Walter
--- al m <ampm@xxxxxxx> wrote:
> Starting to look to me that these sets with the
> lamps and ballasts are junk.
> Al Marquardt
> ampm@xxxxxxx
> Al Marquardt Electronic Repair
> 206 W Main
> Girardville Pa. 17935
> ----- Original Message ----- 
> From: "Dale Lubow" <harristv50010@xxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Wednesday, March 30, 2005 9:25 PM
> Subject: [TechAssist] INFOCUS #LP290 LCD
> Projector-Lamp won't start
> 
> 
> >I am trying to repair an INFOCUS Model# LP290
> LCD Projector. The fans run,
> > it knows when there is a source connected to
> it. Looking at the lamp,
> > everything looks ok.
> >
> > The lamp assembly plugs into a connector block
> with two contacts. I have
> > been reading the RCA technical manual on there
> DLP units, trying to
> > understand how these lamps are started and 
> kept lit.They talk about a 
> > lamp
> > ballast supply and that is strikes an arc to
> light the lamp. They really 
> > say
> > very little about making sure it works.
> >
> > Is there any way to make sure a lamp is capable
> of lighting other than 
> > just
> > subbing in a new one, which I can't afford to
> do unless it solves the
> > problem?
> >
> > Is there any way to make a measurement where
> the ballast connects to the
> > lamp to see if the supply is trying to light
> the lamp?
> >
> > Is there any chance anyone out there may have a
> schematic of this unit?
> >
> > I need to learn what makes these things tic
> since I also just got a Sharp 
> > &
> > Sanyo LCD projector in which I haven't checked
> out yet.
> >
> > Any information would be appreciated
> >
> > TIA,
> > Dale
> >
> > Dale A. Lubow C.E.T.
> > Harris TV & Appliance
> > 335 Lincoln Way
> > Ames, IA 50010
> > 515-232-1109 (Voice)
> > 515-232-3356 (Fax)
> > HarrisTV50010@xxxxxxx
> >
> >
> >
>
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Walter Wood                  
United TV Service
501 Poplar St.
P.O. box 602
Pulaski Tn. 38478
mailto:wwood_38478@xxxxxxxxx
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