Question about Broksonic CTGV-5463TCT TV

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TV Cuts off

There is no burning smell or power surges.
I checked all the connections and they are ok
During the 75 seconds it is on the sound and picture is great.

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  • captasdf Jul 22, 2008

    I also use a surge protector

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Hi again,

Appreciate the "Ask Me". With your permission, I would likewise be posting this reply in your original post here.

Repairs of course would require familiarity with electronic circuitry and components, use of a DM and a soldering iron and access to to a service manual or at the very least a schematic diagram with voltage measurement.

Assuming the above and you are considering a DIY (do-it-yourself), perhaps the easiest and fastest would be to do a shotgun approach, i.e. open the unit and re-solder most of the solder joints with particular attention to the power components such as resistors, transistor, ICs, transformer (including the FBT). Of course one can never be sure which really is defective but the objective is to repair with no in depth diagnosis. Another component type to check would be the big capacitors right after the diode(s). Look for any visual indication of bulging/blistered, leaky or anything out of the ordinary among the power capacitors (and even the other components), if found/yes, then replacement(s) would be needed.

Other than the above, further diagnosis requires that you operate the unit with the back cover off and determine if it is heat related. This could be done by powering the unit, wait the 75 seconds, quickly unplug and feel for any component that heated up. There might be a different smell to it also. Of course safety precautions when working with live sets and/or units just unplugged must be observed.

Posted on Jul 22, 2008

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Hi,

Offhand, initial suspects could be:
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A couple of question pls:
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  2. was there any power surge or interruption prior to the problem;
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Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

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Thank you for using FixYa.

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