Question about Sharp 36J-S400 36" TV

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The TV was on and while resetting a circuit breaker, I turned off the power to the TV and turned it back on. After that, the TV is only showing a black screen. We see all the menu information but it wont select a cable channel or show any static when on the Air function. It worked fine up to the power on and off situation. What do you think?

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Try going into the menu and doing a reprogramming or auto search for channels.

Posted on Sep 16, 2006

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Sound ok but no picture

see the b. diagram and test the power supply ;transistor, fuse, filter, switch, c.breaker rectifier,IC regulator voltage.
measure the horizontal output =125vdc
all other circuit:12vdc

Oct 17, 2012 | JVC Standard (CRT) Televisions

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Sony KV_#^FV1

try the hard reset first.

Jun 14, 2008 | Sony KV-36FV1 36" TV

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Black screen

Possible causes
  • Your TV is not receiving or displaying the signal from your DIRECTV® Receiver.
  • Your receiver has correct guide information, but is not processing video correctly.
  • You are viewing a channel where an upcoming sporting or special event is scheduled or has recently ended.

  • Turn TV off and on.
  • Make sure light on front panel of receiver is lit.
  • Press the "TV/DSS" button on the remote control or front panel of the receiver (not all receivers have this option).
  • Reset the receiver by unplugging the power cord for 15 seconds.
  • Check all cable connections between the dish, receiver and TV.

If the picture is black, but the program title and description display in a banner the top of the screen:
  • If the problem is only occurring on a few channels, check the detailed description of the program through the on–screen guide on those channels. Often, we display a blank screen with a banner before and after a high–profile event to alert customers about the event.
  • Reset the receiver by turning off and unplugging the power cord for 15 seconds.
  • Run a signal meter test to check your signal strength (press "menu" and look under "setup" or "installation").

If your signal strength is below 70 (or below 60 on HD receivers) in clear weather on transponders 1 and 2, see our troubleshooting steps for "Searching for satellite signal. Please stand by." You may see zero strength on transponders 4, 12, 18, 20, 26 and 28. This is normal in many areas. Your system manual shows how to run cables and point your dish.

Oct 24, 2007 | Toshiba 30HF66 30" TV

1 Answer

I connect the cable,it doesnt show anything!I try the auto channel search for both cable and antenna,it doesnt find any channel at all!it says-no signal..-rca 20inch sdtv truflat.dual combo with dvd player...

I assume you tried the cable on a working TV to make sure there is a signal on the cable line and that the cable terminal is OK. See if you can control the input selector and set it up for RF or TV reception. If OK, try to tune in channels manually or in auto mode. Do this in programming mode. If you notice any noise on the screen, this means the source selector circuit is OK. If there is no noise, the source selector may not be latched to the RF circuit output. Try to feel the terminal at the back of the TV set. If it feels like it moves when pressure is applied in various directions, chances are the solder connection for the terminal onto the circuit board may be faulty. Resoldering them would be easy for DIY enthusiasts. If it isn't the culprit, try the DVD. If it works fine, then the video circuits must be ok. The trouble could be from the video source selector circuit backwards to the RF block. Usually an IC senses the power condition of the DVD player. If it senses that the player is ON, the IC latches on the signal coming from the DVD player. See if there i a separate power button for the DVD. More later, please post a feedback

Aug 25, 2010 | RCA TruFlat 27F520T 27" TV

1 Answer

My tv wont power on

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

Also ensure that the fault is not coming from a faulty receiver box sending bad signal, check if you get same problem on dvd with no receiver box connected.

If that does not work, and you keep having a flashing led on front of the TV, and tv turning off by itself after a while, that indicates a fault condition.

The flashing light indicates a diagnostic state called protection.
When the Monitor goes on protection there are only two possible causes.

1The internal circuits are jammed because of electrostatic chargesaccumulating on capacitors, or because of a wrong voltage read by themain chip on your monitor controller board. this started the protectioncircuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , startingthe flashing light.

If you are in situation one, then theTV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

Common faults that can occurr are a blown capacitor on power board, a convergence IC has blown, or a fault on Digital board.

Check also the video cable or any external connection cable, if the cable is shorting, or the connector is bad, you can get same flashing statebecause of the video cable.

Try moving the video cable, and if the cable is not built in, then also try a replacement cable.

If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

Jul 02, 2009 | Proscan PS27500 27" TV

1 Answer

Audiovox AVT2540 won't turn on


The only possible check that could be done without removing/opening the Audiovox TV would be to check for the presence/absence of supply power/voltage depending on how the TV is powered (12VDC or 120 VAC). Normally, there would be an fuse and/or circuit breakers.for the RV's entertainment system including the TV.
The 120-volt circuit breakers and 12-volt fuses are located in the same compartment. These devices interrupt the power if the circuit is overloaded.The 120-volt circuit breakers include a 30 amp main breaker and several smaller breakers for individual circuits. If a circuit breaker is tripped, look for an overload on the circuit, then reset it by turning the breaker OFF and then turning it ON. Do not try to reset a breaker the second time without locating the overload problem. The 12-volt fuses protect individual circuits. If the circuit is overloaded, it will blow the fuse and the fuse must be replaced. Check the circuit for an overload and replace the fuse with the same type or amperage rating.

If the above checks out, then problem is internal to the unit and would require removal from its current position.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

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3 Answers

Panasonic CT-32SL14 flat screen tv stopped working

We played Wii sports and fit for few hours than tv started to flicker and change colors to green and black and white. We shut down Wii and not TV screen doesn't show any picture. The power is there and the sound... but the screen is just blue. Any one experienced anything similar?

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9 Answers

Element flx-3210 lcd tv

Sony sets are tricky to troubleshoot and you're not telling us much. For example, do you hear anything at all when you turn it on (clicking or high voltage coming up then shutting down). Anything appears on the screen at all ? Does the red light on the front blink and if so how many times ?

Feb 02, 2008 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

Sony 46 inch XBR3

Since you have a lit power light, you are getting AC power.

Your set either has a blown internal fuse (or circuit breaker) or a power supply problem. If you can reset its breaker or replace its fuse, you may be able to fix it yourself. If not you need professional service.

Good luck! :)

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1 Answer

Picture vanished

The problem might have started because of loose conections in the vertical circuit,if the vertical circuit fails completly the screen blanks out to prevent a line being burnt in the picture tube so that part is normal but the problem is still in the vertical circuit.Maybe the IC just went bad all the way and it might have taken a fusible resistor. If you are familiar with tv service you have a place to check but if you are not too familiar be safe and call for assistance from a servicer,is a straight forward problem and it should not be expensive.Let US know how it goes or if you need more information.

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