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 > >>> > >>>-------------------------------------------------------------------------- > >> > >>--- > >> > >>>This Email List is accessible to the general public through search > >> > >>engines. Remove: http://www.tech-assist.org/remove.htm > >> > >>>Set Vacation > >> > >>mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation > >> > >>>Lost Password: http://www.tech-assist.org and select "Login Problems?". > >>>Email Archives: //www.freelists.org/archives/techassist/ > >> > >>------------------------------------------------------------------------ > ----- > >>This Email List is accessible to the general public through search > >>engines. Remove: http://www.tech-assist.org/remove.htm > >>Set Vacation > mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation > >>Lost Password: http://www.tech-assist.org and select "Login Problems?". > >>Email Archives: //www.freelists.org/archives/techassist/ > > > > > > > ----------------------------------------------------------------------------- > > This Email List is accessible to the general public through search > engines. 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