Question about Loewe Aconda ACO9303 30" TV

2 Answers

Aconda 9383 cycling on and off.

Replaced the flyback transformer with no success. A clicking noise can definitely be heard at the front where the on/off button is. I checked the 6V fuse and it is fine. Whatever the problem is I will have to repair it myself. I'm capable as long as it's not too involved.

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  • charles32 May 15, 2009

    I ordered the part from Loewe, so I was assuming that it was already calibrated for the specific TV. When I replaced it I got the same results from the TV, i.e. cyling on/off. Thanks for the help.

  • charles32 May 15, 2009

    How can the transformer be adjusted? If this needs to be done by installing it and adjusting other devices on the board I'm questoning whether I'll be able to do this. If we ASSUME that the flyback is correctly set is there a 5V standby transformer on a board behind the front panel that I can replace. I do recall seeing a comment from the past referring to this as a potential cause for the same problem. The repair manual does not show a transformer on that control board though.

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Okay you replaced the flyback but did you check and see if that flyback has the same exact votage and polarity as the old one and they can range by version of TV see many models have diffrent version and yes it can get complicated since you have limited resources on the repair..

Posted on May 15, 2009

  • Grand Canyon Tech
    Grand Canyon Tech May 15, 2009

    Okay you replaced the flyback but did you check and see if that flyback has the same exact votage and polarity as the old one and they can range by version of TV see many models have diffrent version and yes it can get complicated since you have limited resources on the repair..

  • Grand Canyon Tech
    Grand Canyon Tech May 15, 2009

    Well I apperciate that you ordered from te manufacture, They make mistakes with parts more times that i can shake a stik at them and no there not calibrated out of the box.. Thanks for the quick reply please rate your experiece as we do not get compensated our compensation is your got rating :)

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On the flyback transformer adjust the pots on the focus block to be in the centre, you can readjust if you get the set going.

Is the clicking noise there as the lights change from red to green and back again?

Check your brown whitman fuses.
Check all areas for dry joints especially near the LOPT.

OK PSU!

Check impedance across Q524, if short power supply kit needed.

To check Power supply,Remove chassis, lift two legs of opto coupler (i669) nearest the heat sink, put 1.8K resistor across. Remove L534.
Put light bulb across C651, put mains onto middle two pins of Bridge rectifier (D613) if power supply is good lamp will run forever.

Hope this helps!

Posted on Jun 09, 2009

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