Question about Toshiba 32A43 32" TV
The TV was plugged in and when I came home it would not power on. I removed the back cover and unplugged 2 multpin cables from powersupply to HV board. The power button came on fir a short while and then the sound IC started to get hot. What can I check for a shor or putting out too much voltage? On the chasis it says: DME069B Thanks Leo
this symptom is usually caused by a breakdown in the power-supply circuit. in most modern receivers (transistorised and/or ic), it may also be caused by a breakdown in the horizontal deflection circuits (horizontal oscillator, pre-drive or drive circuits.). this is because the supply volatages for the tuner, video intermidiate frequency(VIF), video amplifier, sound intermediate frequency(SIF) and vertical output circuit are usually supplied by the horizontal output circuit. since you are not inclined with this kind of job, better bring it to a qualified tv technician. with regards to the cost of repair, i cannot tell you the price since my location is different from yours. but to give you and idea, here in philippines $100 is enough for this kind of trouble!
Posted on Feb 13, 2007
Hello Hloggins, hi, your power supply is not producing the pulse needed to start the switching. check for the IC on the oscillator part of the power supply, you need an Oscilloscope to test this. if there is no scope. i suggest you replace the IC.
Posted on May 20, 2010
distorted sound sometimes accompanied by buzzing is caused by detuned circuit in the SIF amplifier and sound detector circuit. a distorted sound alone is caused by a breakdown in AF amplifier circuit so try to change the sound ic since its the only options left. good luck!
Posted on Jul 27, 2010
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