Question about Mitsubishi WD-62725 62" Rear Projection HDTV-Ready Television

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TV shuts off on it's on after about 20 - 30 minutes of play

I initially thought the problem was signal related, but have tested three different inputs and none of them solve the problem. TV will freeze then shut itself off.

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Freeze like the picture is in pause?

picture freezing is desired function on the remote and handled mainly by the "picture and picture" circuits. but the video that is involved and processed there is handled by many circuits and microprocessors.
what you describe is an intermittent heat related problem if you almost can set a watch to the the shut-off time. you can feel, if your a tech, what part is running hot with a finger or start freezing a suspect part with freeze spray and see if stays on long past overdue. make sure your vent holes in the back are not covered and keep the back at least 1/2 foot from the wall.

Posted on May 24, 2008

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My channel 7 keeps freezing and comes up with no signal sometimes for days when it's though my my bush digital recorder box. But when it's just though the tv channel 7 works fine. What's going on??


Different digital boxes and tv's have different levels of RF gain. Some need more signal and some need less to work efficiently.
Possibly your Bush pvr needs a much stronger signal than your tv so the available signal is permanently on the threshold of reception and atmospheric conditions will some of the time reduce the available signal when reception will become impossible for the box but still be above the threshold for the tv set.

Modern Bush is not reknown for being a high quality brand and the purchasers of budget brand pvr's often discover reception or performance problems in fringe signal areas. Because a single aerial must receive a very wide range of frequencies it will be more efficient for some channels than others and so one channel could be a fringe channel and another channel produce a very strong frequency.

The signal strength and quality can be checked for each channel by selecting options in the menu in order to check this theory.

The problem might be solved by replacing the Bush pvr with a premium brand or replacing your aerial for a more efficient type. One of my friends had five different boxes before he gained a satisfactory performance and another friend three boxes and still has problems.
My installation has a new high gain wideband aerial on top of my 3 storey house and a distribution amplifier in the loft to keep the input lead short and the whole lot connected by very good quality double-wrapped co-ax.
I had to add different amounts of attenuation for each box or tv set but in spite of the signal being on average too strong and needing attenuating there are still channels for which the aerial is not as efficient and providing only a weak signal.

Feb 09, 2015 | Bush Televison & Video

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VCR/DVD & Samsung TV: "weak or no signal"


Take the VCR remote, check VCR output settings ( scart1, scart2 , RCA) and signal format (PAL) etc

Jul 26, 2008 | Samsung TX-T3093WH TV

1 Answer

My Phillips flat screen picture flips after being on about 10 minutes no flashing lights I switch the format and it straightened up for a minute but started back flipping can you help me assess this...


Vertical 'flipping' is almost unheard of with modern digital video. Are you receiving your signal via the coax antenna or cable input? You might try using a different input method and possibly a different source (DVD player etc.) to see if the problem is consistent. You might also check the refresh rate of the TV and try changing it. If the problem only happens after the TV warms up, you may have a heat related electronic problem with the TV. Try blowing a fan on the TV too see if this delays the problem for 5 minutes or so.... If it's heat related, it will likely be an expensive repair unless it's under warranty.

May 05, 2014 | Televison & Video

1 Answer

VW37L 37 in. LCD HDTV input button wont work


Have you find out if the problem is with your remote control? For instance, you are able to control your TV using a Universal remote control. My 32" Vizio TV had a similar problem, initially thought it was related to my remote control but in fact the TV didn't respond either to an universal remote control of my SAT receiver that I eventually use to just turn on and off the TV. I've found out that the problem was with a little board on the TV located at the left down corner viewed from the front side of the TV and that receives the signal from the remote control. I found the board on ebay for about $5, replace it and the TV responded again to both original and universal remotes.

Nov 11, 2013 | Vizio VW37L 37 in. LCD HDTV

1 Answer

Just picked up an old Pioneer PDP 4304 HD 47in TV and sound will play through various inputs but NO Picture. That is only some little colorful speckles. Any Suggestions?


Please check if the video inputs are working as what is observed by you is that none are working. If so this means there is no signal processing specially Video and the fault seems related in the AV section. You need to use a signal test to confirm from the tuner section, to the IF section and the AV section.
Possible the fault seems related to a failure in the AV processor/ logic switch.

Sep 28, 2011 | Pioneer PureVision PDP-4304 Television

1 Answer

I have an onn 42 inck flatscreen tv and since last night have lost all colour on screen,,,tried cable and scart all seem ok,,any ideas


Hi.

If the problem happens using different input and devices, then it is either the terminal circuit (input/output connectors) or the processing unit in main board. The terminals are unlikely the culprit if problem concerns different inputs.

I imagine that the picture is not properly B&W (gray-shades) but some kind of reddish, bluish or greenish picture as the LCD will process picture using RGB (red green blue) channels instead of CYMK (cyan yellow magenta black) like CRT TVs.

Test the TV using an external aerial. You will notice if the channels have the wrong color even from static.

Use different inputs, different cables and different devices. beware of SCART cables, the SCART contacts are very easy to break. A defective cable will loose picture. Better testing using AV cables and component cables. AV cables are red/white for sound and yellow for video. If the two-wired yellow cable does not work, then the TV is faulty.
Other test can be done using component cables. Component cables send the three red-green-blue signals on different cables, hence testing is simple. Test swapping cables and see if TV tone stays the same if color tone changes the problem were the cables. Test also using at least two different devices (e.g. one DVD player and one TV receiver or a playstation).

If you find that the TV is defective call the manufacturer at the number listed on manual. If the problem is that one or more RGB channels do not work the TV main controller board must be replaced.

Regards.

Ginko

Sep 13, 2011 | Televison & Video

1 Answer

Hello, In the last couple of days my Sony TV (KDL32S3000) has been working fine for about 10 minutes then a message appears saying 'POWER WILL BE TURNED OFF BY AUTO SHUT OFF SOON' this message...


If this happening when TV is viewed then it is possible that the auto shut off is active as no signal is detected by the processor and so is instructing to shut down.
However this fault is related to a problem in the signal detection circuit, if this happens with the auxially circuit- play station- then some logic gate is faulty which needs to process and detect the signal.
Remove power for few hours and see if the fault resets, if not the circuit needs a technical review.

Jul 08, 2011 | Sony KDL-32S3000 32 in. LCD Television

1 Answer

No input signal hdmi


Make sure the HDMI connection is secure. Madke sure it is on the correct input. Turn on the peripheral first, i.e. dvd, cable box, etc. then turn on the tv. If you still have problems, test whether or not the HDMI cable is bad by trying with another device. If okay, make sure the device or peripheral works with a different type cable. Try to change the inputs from HDMI input 1 to say HDMI input 2, etc. If you can't get HDMI to work just switch it to component. HDMI video is not Superior to component it just affords one to have true 5.1 surround sound broadcast.

Mar 23, 2011 | Initial HDTV-322 32 in. LCD Television

1 Answer

Most of the time I switch between inputs on my Vizio the sound turns off. It seems to be related to switching between HD and non HD formats. Is there anything I can do to solve this issue?


Hello.
If sound turns off for a couple of seconds it is actually not an issue but normal operation. When you switching between formats different software protocol is in use and it need some time to synchronize.

In case if sounds turns off and stays off you have to make sure where this problem is originated.
If you have DVD player with both standard and high-definition outputs - connect them both to the different TV inputs and switch to see if problem is still there. If sound comes back while using DVD - you might have problem with your cable/satellite box and TV has nothing to do with it.
If DVD "test run" creates same issue - main board in your TV have to be replaced. Vizio have many software/firmware - related issues.
Regards.
Russ.

Dec 01, 2010 | Vizio 42 in. LCD TV

1 Answer

2004 hlp4663w component and hdmi signal error message


Chances are the analog board ( One with the Inputs) need replacement. You can get one at the following link. www.tvrepairworld.com

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