Question about Mitsubishi VS-4544 45" TV

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Power problems i have a 42' mitsubitshi projection tv and it always powers itself off sometimes within sec. and at times a little longer.

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 high voltage regulation problem. need tech service. 

Posted on Dec 01, 2008

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Posted on Jan 02, 2017

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Every time i turn on the tv it makes the click noise it is suppose to and the little red power indicater bulb flashes for about 5 to 7 secs like always but right about the time the screen usually kicks on...


Please check the horizontal output transistor for leak, base-emitter. Change it.If there is any kind of short in the board, the power supply will sense int and will shuts down. Line out put transformer [LOT] may also suspect. On the secondary supply stage from LOT, the secondary power supply section, check all the rectifier diodes, and its filter capacitors for leak. Even a slight leak will effect the proper function of the set. Check it with good qulaity analongue multimeter, with setting it to meg ohms range; check the suspected componets off board. Likewise check the primary rectified DC voltage at SMPS stage. It should be aroung 380V DC accross main filter capacitor. If it is not check the main filter capacitor [usually 330Mfd 450V] for low capacity. and check the four main rectifier diodes.

Oct 14, 2010 | Sony FD Trinitron WEGA KV-32FS100 32" TV

2 Answers

The power swith will turn it on and off by itself. Won't stop


This tv have a colors wheel.U hear grinding noises? Picture flickers black&white.That the indication the colors wheel is dead,need a new colors.U have Lamp LED front Lit up or flashes?That mean the projection lamp life is over,require a new projection lamp.U hear alots of clicking sound?That mean the Ballast board is dead,this board help to ignite the projection lamp.

Jul 10, 2010 | Samsung DLP HL-P5663W 56" TV

1 Answer

TV set turns itself off after I press power button


I had a similar problem with my Phillips 42 in. LCD HD TV.

Here's the problem. The Power Supply Board. I opened my TV up(warranty was up of course) and found several bad capacitors. Phillips and several other companies were sold capacitors that although were highly rated failed within 5 years because of a lack of preservatives. All sorts of electronic equipment is now being effected due to these defective capacitors.
Solutions?
1. Take it in and have it fixed
2. Open it up, check the board for faulty capacitors(bulged or leaking) Buy a new Power supply board and install it.
3. Remove PSB, remove faulty capacitors and replace with compatible new ones.

Hope this helps

Jul 01, 2010 | Samsung PCL5415R TV

1 Answer

TV turns off by itself and then cycles with the green light turning on and off but the TV does not come back on during this cycling time.


I had a similar problem with my Phillips 42 in. LCD HD TV.

Here's the problem. The Power Supply Board. I opened my TV up(warranty was up of course) and found several bad capacitors. Phillips and several other companies were sold capacitors that although were highly rated failed within 5 years because of a lack of preservatives. All sorts of electronic equipment is now being effected due to these defective capacitors.
Solutions?
1. Take it in and have it fixed
2. Open it up, check the board for faulty capacitors(bulged or leaking) Buy a new Power supply board and install it.
3. Remove PSB, remove faulty capacitors and replace with compatible new ones.

Hope this helps

May 06, 2010 | Loewe Aconda ACO9303 30" TV

1 Answer

SONY KV32XBR400 (year 2000) screen is blank when power turned on


The clicking you are hearing was probably always there, it's just that when something goes awry, one pays closer attention. What you hear is probably a relay that connects power to the rest of the set. Since our sets can respond to a remote, they always have a little bit of life to supply power to the infra-red receiver so it can respond when 'off.'
I see two possibilities; the relay itself has burned contacts and not always 'closing' as it should, or, the high voltage circuit is failing to turn on as it should causing an excessive current to flow for a moment and a protective circuit to trip and disconnect the power from the main supply.
It probably will get worse if the problem is not found and could damage other circuitry as well.
Good luck finding a TV repair man who isn't deceased or out of business but I do recommend you try to have it repaired. Once repaired, it will outlast most any panel/flat screen-type TV as it appears nearly all of them are failing much too early in life.
You can check by entering just "LCD," "plasma" or "projection" plus TV in the search window here.

Oct 21, 2009 | Sony FD Trinitron WEGA KV-32XBR400 32" TV

1 Answer

Tv turns itself off . you could turn it on & immediately turns itself off or you could have it on for a while before it shuts itself off.


I had a similar problem with my Phillips 42 in. LCD HD TV.

Here's the problem. The Power Supply Board. I opened my TV up(warranty was up of course) and found several bad capacitors. Phillips and several other companies were sold capacitors that although were highly rated failed within 5 years because of a lack of preservatives. All sorts of electronic equipment is now being effected due to these defective capacitors.
Solutions?
1. Take it in and have it fixed
2. Open it up, check the board for faulty capacitors(bulged or leaking) Buy a new Power supply board and install it.
3. Remove PSB, remove faulty capacitors and replace with compatible new ones.

Hope this helps

Aug 12, 2009 | RCA TruFlat 27F520T 27" TV

1 Answer

My tv 32pw9617 switches of by itself.


sounds lick you may have a dry joint in the powers or line o/p stage.

as a rare fault it could be the crt with an intermittant internal s/c. but you would notice the colour was tinted either red, green, or blue in the dark areas of the pic.

Jul 13, 2009 | Televison & Video

1 Answer

Maganavox turns on and then off


did you solve this problem? i have the same thing, what did u do?

Jun 26, 2009 | Philips 27MT3305 27" TV

4 Answers

Sony kv32fs16 problem


The STANDBY light is flashing on the television and there is no picture or sound. Solution
sp.gif sp.gif The STANDBY light will flash if an issue is detected within the television. This can sometimes be resolved by simply following the steps below to reset the television.
  1. Turn off the television. IMPORTANT: For a projection television that uses an internal lamp, wait 5 minutes after turning off the television to allow the lamp to cool before continuing with the following steps.
  2. Unplug the television power cord from the electrical outlet.
  3. Let the television remain without power for 60 seconds.
  4. Plug the power cord back into the electrical outlet. NOTE: If the television is plugged into a power strip or surge protector, remove it from the power strip or surge protector and plug it directly into the wall outlet. If the issue is resolved, the problem is with the power strip or surge protector and not the television.
  5. Turn on the television.
If the issue is still unresolved after following all of the troubleshooting steps, service may be required. Please note the number of times the STANDBY light flashes and relay that information to the service center.

Nov 02, 2007 | Sony FD Trinitron WEGA KV-29LS35 29" TV

1 Answer

Picture tube doesn't turn off


The power relay driver or the relay itself is bad. Its sticking closed so the voltage is there for the power supply but the micro has turned off the tuner.

Sep 15, 2006 | Panasonic CT-27G23 27" TV

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