Lamp Driver board is the Ballast, and the Ballast Power Supply is the Lamp Driver board. Same thing (just to avoid confusion). That power supply is self-contained, Uses +207V dc from the main power supply AND a "P-on" command line from the Micro.....now don't ask me where the Micro's P-on comes from.....I think it varies from model to model. Damon B Telrad Electronics Fort Wayne IN ----- Original Message ----- From: "Wayne Vanaman" <Wayne@xxxxxxxxxxxxxxxxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Tuesday, June 28, 2005 6:33 AM Subject: [TechAssist] Re: Sony LCD proj KF50XBR800 picture intermittent on/off > From what I have read either the lamp or the ballast (or the ballast > power supply etc) could be a problem. > > Don't you love intermittants. > > Wayne Vanaman > Omega Electronics > 6904 W Fairfield Dr > Pensacola, Fl. 32506-3310 > > Wayne@xxxxxxxxxxxxxxxxxxxxx > WWW.PensacolaTVRepair.Com > > 850-456-5995 voice > 850-458-6369 fax > > > Damon wrote: > > Well, I've had 2 XBR800's with bad lamps......and I think I replaced one > > Lamp Driver board > > Weird thing about this is the symptom.....TV illuminates, about 30 - 60 > > seconds later it shuts down (the lamp does), then about 30-60 seconds later > > you hear the Lamp fire, lights up quick.........runs about a minute, then > > shuts down again...... > > > > You would Ass-u-me it acts like one of the thermoswitches is kicking in/out > > or the Lamp Driver board is shutting down, but it's actually the Lamp at > > fault. > > > > Damon B > > Telrad Electronics > > Fort Wayne IN > > ----- Original Message ----- > > From: "Wayne Vanaman" <Wayne@xxxxxxxxxxxxxxxxxxxxx> > > To: <techassist@xxxxxxxxxxxxx> > > Sent: Monday, June 27, 2005 8:59 AM > > Subject: [TechAssist] Re: Sony LCD proj KF50XBR800 picture intermittent > > on/off > > > > > > > >>I rather suspect that they mean lamp/ballast matching problems, but that > >>isn't what they say. > >> > >>They also claim that the flickering CRT problem is in fewer than 1% of > >>those sets, which means half the people in Pensacola own those sets. > >> > >>Wayne Vanaman > >>Omega Electronics > >>6904 W Fairfield Dr > >>Pensacola, Fl. 32506-3310 > >> > >>Wayne@xxxxxxxxxxxxxxxxxxxxx > >>WWW.PensacolaTVRepair.Com > >> > >>850-456-5995 voice > >>850-458-6369 fax > >> > >> > >>Jim Myers wrote: > >> > >>>ALL projection sets with a lamp have lamp problems! How could they NOT > >>>have lamp problems? > >>>Maybe someday they will have an LED light source to replace the lamp. > >>> > >>> > >>>******************************** > >>>Since 1972 * > >>>Jim Myers * > >>>Telrad Electronics * > >>>Fort Wayne Indiana * > >>>******************************** > >>> > >>> > >>>Wayne Vanaman wrote: > >>> > >>> > >>>>Sony "claims" that these models (kf50 and 60xbr800 and df60dx100) do not > >>>>have lamp problems. > >>>> > >>>>I always believe Sony, don't you? > >>>> > >>>>Wayne Vanaman > >>>>Omega Electronics > >>>>6904 W Fairfield Dr > >>>>Pensacola, Fl. 32506-3310 > >>>> > >>>>Wayne@xxxxxxxxxxxxxxxxxxxxx > >>>>WWW.PensacolaTVRepair.Com > >>>> > >>>>850-456-5995 voice > >>>>850-458-6369 fax > >>>> > >>>> > >>>>Rich M wrote: > >>>> > >>>> > >>>> > >>>>> > >>>>> > >>>>> > >>>>>I always replace the lamp and ballast the first go around, also educate > > > > the > > > >>>>>customer on the proper use of the et. > >>>>> > >>>>>1. make sure there is a lot room around the unit for proper ventilation > >>>>> > >>>>>2. make sure the unit is not on a switched outlet > >>>>> > >>>>>3. better to leave the unit on between shows if only 30 min to 2 hours > > > > a > > > >>>>>part, the cooling and heating of the lamp decrease the lamp life., > >>>>> > >>>>>4. don't move the tv after you turn it off because the lamp is very > > > > fragile, > > > >>>>>give it a couple hours to cool > >>>>> > >>>>>5. Also put the unit on a U.P.S battery backup. So if you lose power > > > > the > > > >>>>>lampstill have time to cool. then turn off set. > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>>>From: "tvservice" <tvservice@xxxxxxxxxxxxx> > >>>>>>Reply-To: techassist@xxxxxxxxxxxxx > >>>>>>To: <techassist@xxxxxxxxxxxxx> > >>>>>>Subject: [TechAssist] Sony LCD proj KF50XBR800 picture intermittent > > > > on/off > > > >>>>>>Date: Fri, 24 Jun 2005 15:42:04 -0500 > >>>>>> > >>>>>>Hi group, > >>>>>>am servicing this proj tv it will come on normal for about 1 minute > > > > then > > > >>>>>picture and sound go off, lamp goes out. > >>>>> > >>>>> > >>>>> > >>>>> > >>>>>>Just as it goes out the "standby led" starts blinking, at 30 blinks > > > > you > > > >>>>>heara click (relay) and at 4 more blinks picture and sound are back. It > > > > will > > > >>>>>operate about another minute and repeat cycle. > >>>>> > >>>>> > >>>>> > >>>>> > >>>>>>Is this a lamp or ballast problem? > >>>>>>I remember seeing something posted about the Sony LCD projection sets > >>>>> > >>>>>havingsome ballast modification but I didn't save them. > >>>>> > >>>>> > >>>>> > >>>>> > >>>>>>Please any help would be appreciated > >>>>>> > >>>>>>Robert > >>>>>>tvservice@xxxxxxxxxxxxx > >>>>>>H &H Electronics Inc > >> > >>>>>----------------------------------------------------------------------- - > > > > --- > > > >>>>>-- > >>>>> > >>>>> > >>>>> > >>>>> > >>>>>>This Email List is Public. 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