[TechAssist] Re: Panasonic LCD model PT-50LC13
- From: peggs <peggs@xxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx, <techassist@xxxxxxxxxxxxx>
- Date: Tue, 21 Feb 2006 09:25:53 -0800
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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