Panasonic TC-11LV1 11 inch LCD TV/DVD question

Nov 23, 2007 6 Replies
M

Greetings:



This last spring, a local repair depot trashed a lot of inventory during a location move; much of the discarded material remained in the parking lot for weeks (in bad weather) and before it found its way to the landfill (it wasn't recycled), I rescued a few things including a nearly complete Panasonic TC-11LV1 LCD TV/DVD. The DVD drive and electronics is missing but the LCD, tuner and I/O board remains together with the case. The set powers on and receives OTA video nicely, but powers down after a few seconds. I surmised that it doesn't like the absence of the DVD drive (perhaps there is a discrete signal on a cable for drive ready?).



Before ordering a service manual, I would appreciate knowing if anyone has been able to run the TV without the DVD drive installed or if a look at the service manual reveals clues about signals to simulate the presence of the drive (if one is lucky). The LCD is very bright and has good contrast so I would like to kludge things to be able to run it.



Also, does anyone know the purpose of the jack beneath the tuner's F connector (it's an eight-pin male header -- perhaps a DTV accessory jack?)



Regards,



Michael


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M

I doubt very much that the TV cares if the internal DVD player is hooked up. And what style 8 pin jack is it?

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M

In-line 10th inch center short pin header with while nylon surround -- common to lots of consumer gear. It is hidden behind a small plastic cover which pries open. The user manual does not mention it.

Regards,

Michael

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M

A few more observations:

  1. Behavior is independent of DC power input voltage; unit rated for +15VDC @ 2A but behavior unchanged over +/- 3 volt margins.

  1. Rapid pressing of the front panel channel select or aspect ratio button prevents power down; while cycling through channel selections the unit remains functional.

  2. I don't have the original remote, but using a universal remote and experimenting with codes I was briefly able to power it up from an off state. When on, using the experimental code, volume control and mute functions work but nothing else (probably the wrong code anyway). Note that volume direction is correct with the remote (see 5 below).

  1. Power switch left on, unit will randomly spontaneously power on before powering down again after five seconds. This occurs about once every five minutes.

  2. When powered on, OSD works properly, but front panel channel and volume buttons functions are reversed (up is down, etc.)

Regards,

Michael

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M

Further observation shows that the power up happens every 5 minutes and 5 seconds (monitored for three cycles so far) and power on lasts 5 seconds. Not random, but clock-driven.

Does anyone have the service manual or access to one of these units? These symptoms have a feel about them suggesting firmware states screwed up by the absence of communications with the missing DVD electronics.

Regards,

Michael

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J

If a TV service place trashed some TV sets, I would think that they must have had good reason to!!!

Jerry G. ======

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M

Most of the material was new stock spares and there was a large volume of unfinished repairs. The business had been purchased and was being relocated. I rescued other completely functional devices. From their condition I had little reason to believe that the Panasonic parts were defective, rather that the internal DVD drive had failed (which of course is missing).

Regards,

Michael

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