Question about Panasonic PT-50LC14 50" Rear Projection HDTV-Ready Television

4 Answers

Panasonic LIFI rear projection quit working

I have a Panasonic PT-50LCZ70 rear projection LIFI that quit working while I was watching it. Ironically, it quit working about 3 minutes after the switch from analog signal to digital in June. It would turn on for a few minutes and eventually it would not turn at all except to show the blinking light trouble code. I took to the local Panasonic service center and was told it was the LIFI lamp and that Panasonic would cover labor and parts to replace it. TV was 1 1/2 years old but Panasonic has extended its warranty on the lamp to 2 years for labor. When I got it back it worked fine for 2 days then it went out again. I took it back to the same shop and today the called me and said it would be $1300 to repair it. I was told the "chassis??" needed to be replaced and the part alone was $1000+. Since the TV only cost $1500, I am not going to pay that much to have it repaired. The repair shop has a 30 day warranty on all repairs but I am sure they will say this is a different problem and it wasn't their fault. It's pretty hard for me to dispute it since I know nothing about it, but I have a feeling that I may be getting screwed. The Panasonic site shows replacement parts and prices and I can't find one that is nearly that expensive. I would appreciate any thoughts on how to handle this from techs who are familiar with this type of repair. Should I blame the repair shop and push them on their 30 day warranty, or should I approach Panasonic to make it right or should I just accept my loss and junk the TV. Thanks.

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  • dennjd Jul 31, 2009

    The part costs more than the TV??? I am beginning to think that the repair shop doesn't really know what is wrong with it and is doing a wholesale replacement of parts at a high price just to get rid of me, knowing that I would have to be a complete idiot to go along with it. Although I agree with and appreciate the previous answer, I would like to have more information or opinion as to the likelihood that the second repair requiring replacement of the chassis was caused or would have been related to the initial repair which was the replacement of the lamp. I just can't see the repair part costing so much being required unless the TV fell down the stairs. I was dealing with Panasonic service and they did refer me to this shop which is about 50 miles away. It was the closest authorized repair shop. I would like to hear from someone who is familiar with this specific type of repair. Thanks.

  • dennjd Jul 31, 2009

    I know this is a different part and I doubt they put the wrong lamp in it. I presume the LIFI lamp for this unit can't be replaced with the wrong lamp. I believe they have to replace more than just the lamp when the lamp goes out.

  • dennjd Jul 31, 2009

    Warranty for the TV is 1 year parts and labor and the bulb is 2 years labor and 5 years on the original bulb. So if they say it is something other than the bulb, then there is no warranty now. The only thing going for me is that the repair shop has a 30 day warranty on their repair which I'm sure they will say their repair is still good and that the current problem is new. I agree that I am not going to spend any more money on the TV and I intend to try to make them settle the situation with some type of buyout. I was just trying to understand better the possible relationship between the original replacement of the bulb and the current need for a repair to the chassis. If the power supply was the problem originally and they missed it then it may have caused the original bulb to blow out and the motherboard to fry. That would make sense since the original repair only lasted only two days. If it was the power supply then the original repair would not have been under warranty and I would have had to pay for it but I'm sure it would have been at a lower cost. Any additional thoughts or ideas would be appreciated.

  • TV Tech
    TV Tech Feb 12, 2012

    Read my comments below. They're blowing sunshine for brownie points. And rethink your drink....

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If this tv is under warranty, it should be fixed no matter what the problem is, I would try and make them buy it back. Otherwise all this stuff you are getting done I think is a joke. All these problems sound like a faulty power supply which is extremely common in newer electronics. I can't tell you whether it would be worth to fight them on it or not, I personally would get anything in writing and copy of warrant so you have some info to back yourself up on. I would not spend any more money on the tv. I would try and get everything for free, or make them buy it back

Posted on Jul 31, 2009

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  • Nate Stansfield
    Nate Stansfield Jul 31, 2009

    Get a new tv

  • TV Tech
    TV Tech Feb 12, 2012

    So Nathan, you're going to get your Auto Mechanic to replace one of your headlights, then take it back days later and blame them because your battery went bad because it's been in your car for the last 4 years wearing out ? You're a rip-man...that's what you are. Same with Blame-Boy above...

  • TV Tech
    TV Tech Feb 12, 2012

    So Nathan, you're going to get your Auto Mechanic to replace one of your headlights, then take it back days later and blame them because your battery went bad because it's been in your car for the last 4 years wearing out ?

    Do you really expect the mechanic to give you a free battery when the only warranty you have is on the headlamp? You can't blame a tech for damaging a chassis when the Lifi is on the rear right and the chassis is on the rear left side of the cabinet. Another analogy --- You going to blame them for the exhaust pipe falling off because the lifted the hood and installed a headlamp ?

    I've met people like you. You're always thinking that the WHOLE TV set has a Warreanty on it because one little part was installed.

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Is it just me .. or is TVTech a very unhappy guy about his role in life.
I have yet to see him post anything of any value to this site, only complaining about how the consumer is trying to stand up for his/her rights.
Get a life buddy and change careers if the technology used for TVs today is phasing out an old dinosaur like you.

Posted on Aug 06, 2013

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  • Master
  • 1,734 Answers

The chassis is indeed a different thing than the Lifi lamp. It is the motherboard of the TV. Maybe the built in a wrong lamp which damaged (or shortened) the motherboard. But this is difficult to prove.

A LIFI lamp is also about 1/8 the size of a conventional projection lamp. This is said to make for faster turn-on time—about 10 seconds. I did not find it to be quite this quick, but more like 20 seconds from a cold turn-on to a full brightness image. Nevertheless, that's significantly better than a conventional projection lamp.

If you need a service manual for your TV, I found one at http://manualfox.com/manual0.htm

Posted on Jul 31, 2009

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  • Master
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Wow, sorry to hear about your issue, that's a nasty situation to say the least. First off I would call Panasonic to tell them about the issue, that is if they actually paid for the first repair and you have already dealt with them directly. You have rights as a consumer and this should definitely be covered by the 30 day warranty if nothing else. If Panasonic was never involved, or if they tell you to deal directly with the shop then definitely push them on the warranty, this is the cost of doing business on their part. If you take your car to a mechanic, they fix it, and you get it back and it breaks down with the same exact problem 2 days later they are required to guarantee their work and you wouldn't have to pay for the repair. If the problem was completely different (in manifestation I mean, say for example the air conditioning went out when the first problem was that the engine wouldn't turn over) then the burden is on you. There is actually a part that costs that much to replace, here is a link to it for an example:

http://www.partstore.com/Part/Matsushita/Panasonic/PT50LCZ70/Matsushita/Panasonic/LSXY1151/New.aspx

But, if the problem is the same, meaning the TV went out the first time, wouldn't turn on, and did the same thing the second time, then they should have the burden on them for the repair. They should be able to go through Panasonic if anything else, you could make the argument that somehow they caused the second problem by doing the work they did. The fact that you had two major parts go out within days of each other is definitely highly suspicious and if it were me I'd definitely make them fix it.

Hope this helps

Tim

Posted on Jul 31, 2009

  • TV Tech
    TV Tech Feb 12, 2012

    You have rights as a consumer and this should definitely be covered by the 30 day warranty

    Nice quote...right from the manual.

    Add this part that you conveniently left out --


    You have rights as a consumer and this should definitely be covered by the 30 day warranty "that covers the part replaced"

    If I replace the LIFI, that doesn't mean your chassis or cabinet or remote control or your screen or anything else has that warranty on it.

    And if you want to blame improper LIFI installation...then Riddle me This Batman :

    How can a 12 Volt and 5 Volt power line from the chassis get damaged by a Lifi unit that's 28 inches away....buffered by it's own power supply, and separated by photoisolators eh?

    The engineers are smart about buffering the low voltage circuits from the high voltage circuits.

    Anybody here a REAL Tech ? Do you go to the Panasonic Training? You pay your yearly subscriptions, pass their tests, get rated each and every time by customers doing warranty work for Panasonic?

    I do.....

    Don't GUESS at what rights you have as a consumer....study them. Hearsay is not good advice.

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