Hello there. I was just watching a TV show, when, suddenly, the TV image turned itself off but audio was working fine. Some minutes after that audio stopped to work too.
I tried to turn it on as I tought it could be related to an auto-suspending issue and unplug the TV over the whole night but I had no luck. Not even the TV menu it's displayed.
The TV it's a 32" Toshiba one, sadly I can't grasp the model now, but I'll try to find the manuals later.
Could it be related to an issue with capacitors? Thanks in advance.
Just a thought. Is the TV earlier than 2008? What kind of TV is it? CRT type, LCD, etc...
The government mandated after 2008 that all TV's made have to shut off if no signal is going to the proper input within several seconds. In other words, if no signal after a certain time, the set shuts down. The reason was due to the energy star standards. They wanted to conserve electrical power and energy as well as make certain these sets run more efficiently.
With the above stated in mind, always check for correct input and whether or not it is an analog or digital mode (for audio and video). It could be some mode it was inadvertently put into (even by accident). Then change it to the appropriate input (RCA, HDMI, etc...)
It's LCD, and I am not an American, sorry. The fiber TV top-box set works ok, I already tried it with a PC panel and it outputs the signal perfectly, so the issue lies on the TV.
It's LCD, and I am not an American, sorry. The fiber TV top-box set works ok, I already tried it with a PC panel and it outputs the signal perfectly, so the issue lies on the TV.
That is the remote model - not the TV model. But, let's assume that it is the associated-with-that-remote TV 32L3453DB. Do you know its age? Toshiba part numbers and season-numbers are not easy to follow.
a) Any funny smells of any nature? b) Any previous bad-behavior? c) Are you feeding from a cable box, or directly into the TV from a satellite, WiFi device, or other-than-cable? Have you verified that those connections are present and correct?
Superficially, it seems to be a power-supply issue, with cascading failures, first to the picture, then to the sound. If you can get access to the manual and/or the schematic, there may be internal fuses that have failed (usually for a reason), or some other relatively simple fix. Some "smart" TVs need an occasional software update - that would also be in the manual, as well as the means for a 'hard' and 'soft' reset.
32" smart TVs are under US$100 these days, so failing a simple fix, it is unlikely to be worth the cost of a repair. Sadly.
Before checking any other issue, verify the power cord is ok, and the surge protector and outlet (electrically) is verified ok before proceeding with further repairs. Especially check for bad electrical grounds. I usually verify these things before cracking open the TV, because it is efficient this way and saves time, in addition to ruling out some external cause for creating an internal problem. Then think to the time of the failure of the TV for a moment. Was there an unusual situation when it failed? Was there a storm? Was there a brown out or black out? Anything else unusual? Again, ruling out external causes relating to the internal problem you suspect is on the TV.
If it is indeed a problem with the TV internally, then I would check with the usual suspects, based upon the common failures or problems associated with that model. Someone mentioned swollen capacitors, there's also power supply issues, regulated B +, Invertor board issues, resistors, diodes, and a plethora of the usual suspects in terms of other electronics components, not to mention checking for bad solder joints, bad connections, etc...
There is a lot of time spent tracing problems out. Based upon the model, I would hone in on the usual suspected causes of failure, then look for the isolated cases to determine cause and efficiently provide for a more pinpointed, accurate diagnosis. Consult the service manual and other professionals for assistance. Use your tools and equipment effectively and wisely to help provide for a solution to the problem.
That's the mentality of the typical consumer... just throw it away and buy a new one. I am trying to save the piece from a junkpile, trash heap, or landfill- not add to it! I would rather fix it- best thing for the environment, you getting an education- and in the long run, your finances (money) too.
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