Wait awhile and you'll see a correction on the B list. The Old Master Technician ******************************** Since 1972 * Jim Myers * Telrad Electronics * Fort Wayne Indiana * ******************************** al m wrote: > This is A list!!!!!! > Al Marquardt > ampm@xxxxxxx > Al Marquardt Electronic Repair > 206 W Main > Girardville Pa. 17935 > ----- Original Message ----- > From: "Jim Myers" <jr.myers@xxxxxxxxxxx> > To: <techassist@xxxxxxxxxxxxx> > Sent: Tuesday, February 21, 2006 12:07 PM > Subject: [TechAssist] Re: Panasonic LCD model PT-50LC13 > > > >>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 >>>>>>> >>>>>>>-------------------------------------------------------------------------- >>>>>> >>>>>>--- >>>>>> >>>>>> >>>>>> >>>>>>>This Email List is accessible to the general public through search >>>>>> >>>>>>engines. 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