Question about Loewe Projection Televisions

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Loewe aconda 9303pb keeps turning on and off. red & green light on. Won't stay on.

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  • yellotail1 Aug 07, 2008

    no i have not opened THE TV & I DONT KNOW WHAT A HEAT RELATED ITEM WOULD BE. THERE IS ALWAYS A TICKING SOUND WHEN THE TV WARMS UP.

  • yellotail1 Aug 07, 2008

    THANK YOU BUT MY ACONDA IS NOT AN LCD. IT IS A CRT TUBE SET BOUGHT IN 2002. DOES THIS CHANGE ANYTHING?

  • yellotail1 Aug 12, 2008

    DO I NEED TO REPLACE THE WHOLE CIRCUIT BOARD AT A COST OF $600.00 INCLUDING LABOR?

  • yellotail1 Aug 12, 2008

    ANSWER TO THE SOLUTION TO JUST BUY A NEW TV. THE NEW ONE COSTS $8,000. LOEWE TV.

  • yellotail1 Aug 12, 2008

    YES MY TV IS A CRT

    SANDY

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6 Answers

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Like most CRT based sets any problems detected will cause the unit to shutdown to prevent further damage. There are many causes for this behavior. One of the most common is for the horizontal output transistor to fail. These sets also have regulator ICs that can fail. If you are not familiar with these types of sets, I would recommend that you get a detailed repair estimate from a local repair shop. Post the results here and we can walk you through the actual repair. If either the transistor or regulator have failed, the parts cost should be in the $25 range. Add in the local labor rate for the total repair cost. Replacing the entire board will cost more and should not be necesary.

Dan

Posted on Aug 12, 2008

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Dear,
the click sound relates to relay that deals with empowering circuitry for the other then power..
you just check if the sound comes after sometimes,
if yes, that can be caused by relay too..
if still in problem dont hesitate to write. im ready for further help..

regards,

Posted on Aug 12, 2008

  • 1 more comment 
  • SALMAN NASEER Aug 12, 2008

    do your tv looks like in mentioned website..



    http://www.audioenz.co.nz/2002/loewe_aco...



    regards,

  • SALMAN NASEER Aug 12, 2008

    the main components that deals to make a tv functional is.

    picture tube of course,, it seems its ok b'coz i hope your tv runs fine when it turns on, relavant to picture tube

    other is flyback that generates the high voltage to picture tube.

    the main filteration capacitor

    these are the main units. other are less important but can cause to stop system..

    Can you here any other sound coming from flyback (a greyish unit containing a cable towared the picture tube with cap)





    regards,



  • SALMAN NASEER Aug 12, 2008

    if still not operating then the final decision is to replace the board but do others before it b'coz its final option





    regards,

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Replace whole tv set...better for you

Posted on Aug 12, 2008

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The main filter capacitor or other filter capacitors in the low voltage power supply is dried up and this can cause all kinds of regulation problems.


The power supply regulator is defective (or marginal) allowing excessive voltage on its output and then the X-ray protection circuitry shuts you down.

Posted on Aug 07, 2008

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1. Try this - hold the menu button down for 10 seconds. TV should power up; you will have to turn off front panel buttons on menu.

2. You can also try a hard reset: Unplug TV from AC mains and remove all cables from TV. Wait about 30 minutes and replug to AC power and redo the cabling. Switch on the TV and see if it works..

3. Powering down the set or putting it in standby may have allowed the power supply to cool. Weak capacitors often go out of spec when they cool, thus preventing a section of the power supply from firing up properly again. There is a simple trick...just warm the back of the TV with a hair dryer for 5-7 mins after you have unplugged the TV. Look for the little areas of holes in the back panel of TV. Use these as your guide at where to use the hairdryer, but don't hold the dryer too close (say 5-6inches away). (Make sure the dryer is on High heat). If the TV doesn't turn on after you have heated it up (like it tries to come on but then turns off) you need to unplug the TV again, this resets it. And repeat those steps till it works. Resetting the TV after it fails to turn on is the key. Also, just leave the TV on. Don't turn in off. Since it is LCD, it doesn't take much power...only a few bucks extra a month for your utility bill.

4. A circuit board may crack about some of the larger components mounted on it. You can inspect the PCB's for fractures, and then repair them. It may also be poor soldering that has failed. I would be checking for these things first.

5. If you want to go in for a long term solution, you can easily replace the whole power board or just change the faulty capacitors. You will have to open the back panel and take a look. You can make out which are faulty, because their caps will be swollen on top. Here's a sample pic of a bust capacitor (not same model):
loewe aconda 9303pb keeps turning - 69566c5.jpg
Check the specifications of the faulty capacitors, and get the replacements from your local electronics shop. If you are comfortable with this, you can use a pair of needle nose pliers to G-E-N-T-L-Y pull out the defunct capacitors. Once that is done, solder in the new capacitors carefully. If are unsure how to do this, try to get a friend who knows how to do this kinda stuff do it for you, or get a qualified technician. Warning: If you do not have a background in electronics repair, or are inexperienced, get a qualified technician to do it for you.

REMEMBER there are very dangerous voltages inside a TV that can KILL. Be sure to work SAFE when dealing with electricity. DISCONNECT THE POWER BEFORE YOU DO ANYTHING.

Hope that helps!

If your issue is not resolved, please do not assign a rating just yet. Please post back as to what steps you took, results, etc, and I will try to assist you further as best I can. I am here at your service.

Posted on Aug 07, 2008

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While it turns off and ON do you hear any TICK sound.

and have you inspected the internal components for any heat related shut off?

Posted on Aug 07, 2008

  • dewan nafees ahmed Aug 11, 2008

    The main filter capacitor or other filter capacitors in the low voltage
    power supply is bad and this can cause all kinds of regulation
    problems.

    thank you


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