[TechAssist] Re: Panasonic LCD model PT-50LC13

I got it Jim,
i've order the Ballast 'kit'

Peggs

At 09:07 AM 2/21/06, you wrote:
>Switching to the B list on purpose.
>
>I sent the TS guide to your email, did it get there ok? It has the error
>codes as well as the ballast troubleshooting information.
>
>The Old Master Technician
>********************************
>Since 1972                     *
>Jim Myers                      *
>Telrad Electronics             *
>Fort Wayne Indiana             *
>********************************
>
>
>peggs wrote:
> > thanks Jim,
> > Bob Waterman sent me the files for the Kit,and a file with a
> > troubleshooting Hint.
> > BTW,I previously stated I was getting no 'soound' from the Ballast PCB,I
> > was wrong I had the interlock(lamp cover) open.
> > There IS some 'sound' coming from the Ballast PCB,sort of like a ticking
> > sound...... but the Lamp looks good....... GREAT !!!
> > I'll try your suggestions.
> > BTW,I get a Green flashing Power light for about 2 minutes at Power 
> On,then
> > it turns to Red flashing Power Light.
> > This Hint file says I should also have a 'Lamp LED Flashing' IF the 
> Ballast
> > is Bad........ what/where is the 'Lamp LED Flashing' suppose to be ???
> >
> > Peggs
> >
> >
> > At 07:56 AM 2/21/06, Jim Myers wrote:
> >
> >>Sometimes the lamp is bad but looks just like a good one.
> >>There are a few things to check on the ballast, you can unmount it,
> >>remove the shield cover and flip it around to get to the front of the
> >>board. Then check across P1302 and P1303 for AC line voltage.
> >>Check P1301 pin 4 (the tech line guy said 17v but I get -81v)
> >>Check P1301 pin 1 (the tech line guy said 19v but I get +92v)
> >>Maybe I heard wrong
> >>Then check P1305 pin 1, should be lo in standby and hi when power is on.
> >>Then check P1305 pin 2, it should go hi when the lamp should turn on.
> >>
> >>On the PT-60LC14 that I am working on the lamp does not light, I jumped
> >>P1305 pin 1 to pin 2 and the lamp then lights so I know the lamp is
> >>good, it should be since it is a new lamp. Anyway you can make these
> >>checks and maybe verify if the lamp is good and possible if the ballast
> >>is good. The one I have is a Store Stock set so I can play around with
> >>it and order parts to try, I have the ballast on order now since it
> >>looks like it should turn the lamp on but does not.
> >>
> >>The Old Master Technician
> >>********************************
> >>Since 1972                     *
> >>Jim Myers                      *
> >>Telrad Electronics             *
> >>Fort Wayne Indiana             *
> >>********************************
> >>
> >>
> >>peggs wrote:
> >>
> >>>It must be obvious when the Lamps are bad then.
> >>>By that I mean,you must be able to visibly tell that the Lamp has gone
> >>>bad....... this one is not(visibly).
> >>>At over $250 a piece,I'd like to have a way to Verify that the Lamp is 
> bad.
> >>>I would hate to order one only to find a Bad connection is why it doesn't
> >>>lite-up.
> >>>
> >>>Peggs
> >>>
> >>>At 12:46 PM 2/20/06, J Silverman wrote:
> >>>
> >>>
> >>>>Its an arc lamp so it is not supposed to "measure". An interlock prevents
> >>>>you from accessing the kilovolt arc strike and hundreds of high
> >>
> >>frequency AC
> >>
> >>>>operating volts. The lamp life varies from one lamp type to another, but
> >>>>4000 hours is probably a reasonable life to expect. The life is
> >>
> >>shortened by
> >>
> >>>>frequent restarts. Panasonic had a ballast mod kit to reduce the strike
> >>>>voltage, which was causing a reduction in lamp life, for certain 
> models and
> >>>>serial numbers. Some brands have no ballast problems but some brands 
> have a
> >>>>lot. One servicer that services a lot of LCD and DLP projectors says that
> >>>>they always take a ballast along JIC.
> >>>>Jerry Silverman
> >>>>Greentron Inc
> >>>>4 Newland Ave
> >>>>Greenville SC 29609
> >>>>Fax/Phone 864 232 3889
> >>>>mail to: greentron@xxxxxxx
> >>>>----- Original Message -----
> >>>>From: "peggs" <peggs@xxxxxxxxxxxxx>
> >>>>To: <techassist@xxxxxxxxxxxxx>
> >>>>Sent: Monday, February 20, 2006 4:39 PM
> >>>>Subject: [TechAssist] Panasonic LCD model PT-50LC13
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>>My first large screen LCD TV Repair,so excuse the obvious questions.
> >>>>>I've repaired a few Flat panel monitors,and one small 23" flat panel
> >>>>>Televison,but this one is new ground for me.
> >>>>>
> >>>>>Customer is not happy...... he's replaced the Lamp himself once(a 
> few days
> >>>>>out of warranty), that one lasted about a year and his TV is not working
> >>>>>again(same symptom).
> >>>>>
> >>>>>At Power On,Power Light goes from Red to Green momentarily,then to 
> Orange
> >>>>>with 2 quick blinks.....pause....2 quick blinks(and so on).
> >>>>>Lamp measures open(that is by normal 'projector' bulb 
> standards),that's my
> >>>>>first question,How should these Lamps measure ???
> >>>>>But, I also have no Voltage on the Lamp's Connector........ which 
> begs my
> >>>>>2nd question,What Voltage should I measure for the Lamp ???
> >>>>>
> >>>>>Looks like a Lamp and Ballast(board) Repair(man,these things are
> >>>>>expensive),but I thought I better get some input first.
> >>>>>WinStips seems to agree,but in there I see a KIT (LSUC0022) for the
> >>>>
> >>>>Ballast
> >>>>
> >>>>
> >>>>>PCB Repair.
> >>>>>Anybody installed one of these Kits ???
> >>>>>
> >>>>>Peggs
> >>>>>Peggs' Electronics
> >>>>>1519 West 2nd Street
> >>>>>Owensboro,KY 42301
> >>>>>270-926-4968
> >>>>>fax 270-686-7399
> >>>>>peggs@xxxxxxxxxxxxx
> >>>>>
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