Question about Hitachi 42HDS69 42 in. Plasma Television

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42"HD PLASMA, No sound on Analog input

I have a 42"HD PLASMA, with no sound on Analog input. It had been giving me problem and we could shut- it off and turning it back on a couple of times and the sound would come back. As of last night there is no sound at all on the analog input. The other inputs seem to work or at lease they did before.

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  • wes0067 Oct 27, 2008

    Thanks I'll check it out.

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I think the problem is dry solder joints on the tv. What makes be believe this is you turning it on and off may have been moving the component/s into contact with the board or the act of you turning it off let everything cool down enough to return to their original positions. It now sounds like the contact has broken with the component and the circuit. If you can check for this yourself otherwise find a competant technician. Hope this helps.

Posted on Oct 04, 2008

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A guess here---turn on and with TV/video or source or input change the input until (say you have cable hooked also) you see the regular picture again.

The input by accident may have been switched to the RGB(red, green, blue) which is a component or HD input.

Start there and let me know what happens.

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This "TV" is actually a monitor. It has no tuner and thus no coax connection. You have composite, S-video and component video inputs. You will need a set-top box. If you have cable, get one that is compatible with the type of cable you are receiving (CATV (analog) or QAM (digital).) If you are getting over the air signals, the basic digital to analog tuners will work but only provide SD out. There are some HD tuner options available.

I'm assuming you have a unit with the video input board installed. (Otherwise, it would only have VGA ports.)

The manual is available here: http://www.hitachiserviceusa.com:8080/CMP4201.pdf . If the direct link doesn't work, see the Hitachi support site at http://www.hitachiserviceusa.com:8080/Index.aspx . Use the drop down menus to choose your monitor (plasma monitor then model number).

I hope this helps and wish that I had better news for you.

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1 Answer

I have a hitachi 42 inch plasma tv about 4 yrs old. we watch tv on composite mode and recently it switches to analog every time i turn it off and back on. this is anoying because i have to switch back to...


Well, composite is still an analog signal format. What input does the monitor go to and is there anything plugged into that input? This is a fairly industrial model and has some features that you would not expect a normal tv to have. Check to see if there is some sort of default input selection in the menu or something along those lines. I have used these units before but I'm not familiar with the overall workings. I know there is signal sensing software on the monitor, for example it will turn itself off if no signal is detected for a while, 10 min is default I think. The issue is more than likely a setting that was changed. One other thing you can try, there are cards in the slots in the back. Put the signal you want to come up in the card slot of the input that it's going to automatically. This is a workaround of the problem, but it would do what you want it to.

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Its impossible to say without knowing more than that. If the TV does not detect any signal on whichever input (other than CATV) your on, it will power down. Make sure you are getting an input signal and make sure you are on the right input on the screen.

More info on your problem and i could probably help you better!

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