Televison & Video Logo

Related Topics:

Question about Mitsubishi VS-50603 50" Rear Projection Television

1 Answer

Set won't turn on

When I push power button, power LED indicator turns on then immediately turns off. Don't hear HV come up. Obviously power supply problems. Anyone give specifics power supply areas. Thanks

Posted by Brian hoff on

  • Anonymous Mar 03, 2008

    no picture, not working

  • Anonymous Aug 23, 2008

    I have same problem. I hear the click when I try to turn the power on but it clicks on immediately.



1 Answer


  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert whose answer got voted for 20 times.


    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 87 Answers

I would check the convergence output IC`s first.

Posted on Dec 07, 2007


Add Your Answer


Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:


My toshiba 50L2200u won’t turn on

Excepting the obvious (you have power from plug CHECKED / you'd be surprised)

MANUALLY try power button / to be sure remote isn't faulty.
There should be some kind of indicator led that set has power.
IF NO lights/ indicator good chance the Power Supply has suffered .. maybe replacing
IF lights but still wont start
Likely the "main" board is bad. (other boards or panel can also be an issue)

I’m happy to help further over the phone at


Can I fix my Zenith plama TV Z42PJ240-UB?

Have you checked the various power supply voltages?...are they all correct?

Shut off won't turn back on

how long have you waited since it shut off? it may be overheating. if you've waited for a while and it still won't power up, you may need to test the power supply. if you don't have a power supply tester and most people don't you can remove it from the case and take it to any pc shop. they may charge you a couple bucks but most shops won't do that. if it's bad it will need replaced obviously, if it's not let us know :)

If you need further help, reach me via phone at


Turned it off, now it wont turn on, can hear relay click when pressing power button, power LED on front is always on, no picture no sound, if I unplug for 30 mins, when I plug it back in I believe I can...

Good day!!!!

If you hear a clicking sounds of relay inside that means your TV have a voltage on the power supply section.However,when the high voltage attempt to switch the voltage will dropping down and the TV won't turn ON that,s why you hear a HV (high voltage) charge or what we call HV (high voltage) oscillation..

That problem is commonly cause of faulty capacitors on the power supply section..You can easily identify the bad capacitors if it is look like bulged/dome or sometimes leak in oil but not all faulty capacitors have an obvious indication like that because sometimes faulty capacitors look like good but the actual capacitance value change its either lower or higher than the original capacitance value.In that case you a special tester called capacitance meter to identify the faulty capacitors..

This is the sample image of bulged/dome capacitors.

Please let me know if you found any bulged capacitors on the board..If that so kindly replace it only with same type,ratings and value..You can buy it locally or online and if you want sir I'll be the one search it online just give me the value ex.2200uf/50v. uf-means microfarad and v is for voltage..

If you can't find any bulged capacitors let me know,maybe that is time to proceed for advance troubleshooting.In that case you will need a multimeter tester for voltage this stage you need a moderate technical skills to perform this kind of troubleshooting this stage not advisable for the non-pro so let me know if you have any electronic background..If you don't have electronic background as much as possible I can't advice that because its too dangerous..I can diagnose the problem base on what you see and observation..

Just keep on touch!!!!

Hope it helps..

Try to watch this video on how to replace bad capacitors..

Imac intel will not power on

Possible failed video card. 3rd LED indicates MLB and GPU are communicating: (CAUTION! There is high voltage from the powersupply so any attempt to open iMac other than removing glass panel to see the indicators...should be done by authorized ACMT)

  • LED 1 - Indicates that the trickle voltage from the power supply is detected by the main logic board. This LED will remain ON while the iMac is connected to the AC power. The LED will remain on even when the computer has been shut down or put to sleep. The LED will turn off only if the AC power is disconnected or the power supply is faulty.
  • LED 2 - Indicates that the main logic board has detected proper power from the power supply when the computer is turned on. This LED will be ON when the computer is turned on and the power supply is working correctly.
  • LED 3 - Indicates that the computer and the video card are communicating. This LED will be ON when the computer is communicating properly with the video card. If LEDs 1 and 2 are ON and you heard the startup sound, but LED 3 is OFF, then the video card might be installed incorrectly or need replacement.
  • LED 4 - Indicates that the computer and the LCD display panel are communicating. This LED will be ON when the computer is turned on and video signal is being generated. If the LED is ON and there is no image on the LCD display panel, the LCD display panel or inverter might be installed incorrectly or need replacement.

Samsung HC-R4755W turns on and off by itself.

Have Capacitors checked in the power relay circuit, also if you have young children who like to push the buttons on the front of the set make sure none of the buttons are sticking inward or stuck in a pushed in posistion. More then likely it might be caused by a faulty System control board which we call the signal board, or bad connections on the power supply, Have a tech check the connections on the Flyback transformer and the High Voltage Deflection Area on the HV Power supply. I believe you have Cold Solder Joints in the HV Power Supply.

Hope you this helps you..

Sony Projection Tv Model KP-51HW40

With both of error codes flashing, the problem is trying to figure out wich one to focus on. The flashing 6 code is an indication of HV failure which would then cause a vertical failure(4 blink code). There are so many things that would cause this problem. I can narrow it down to the "D" board to fix your problem. If I were there to troubleshoot it, I could narrow it down further I.E. flyback, HV distribution block. I suggest getting a tech diagnose the exact problem. I wish I could narrow it down better for you. Please take time to rate this solution and if I can be of further assistance, let me know


The power supply, and or one of the circuit board is defective. The set will require shop service.

Jerry G.


Philips 30PW8420/37 TV Won't Turn On

The led code indicates vert failure for one. ( 3 blinks )
The 2 blinks indicates excess beam current of which could be your picture tube or re-adjusting the G2 voltage on the HV transformer which is very critical on philips sets.
Not finding what you are looking for?


Ask a Question

Usually answered in minutes!

Top Mitsubishi Televison & Video Experts

The Knight
The Knight

Level 3 Expert

76851 Answers

Jaime Hernandez

Level 3 Expert

2351 Answers

Cindy Wells

Level 3 Expert

6556 Answers

Are you a Mitsubishi Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides