Question about Sony XM-2200GTX Car Audio Amplifier

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How do I check the powersupply section for any damaged components. how can i tell and how would i fix it?

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Normally if the power section components are damaged you will see a burnt mark on the p c b(printed ciurcuit board). rather than haveing it repaired(which can be very costly,id recomend getting a new unit,that is if its a cheap one. if its a more expensive unit then see how much it is to repair but be prepared to pay a fair bit to get it done.

Posted on Apr 11, 2007

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Posted on Jan 02, 2017

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http://electronicshelponline.blogspot.com/
If the power supply regulator section work properly, check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked above.

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1 Answer

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Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
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1 Answer

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There is some short circuit in the power retulator side of your TV. Never put a fuse and switch it ON, as it may damage more components in your system. A power voltage surge can damage the regulator side of your TV. There is a short [Direct short] occured inside it. Check the rectifier section first, with the help of a multimeter set to Ohms range. Measure the resistance accross the main filtler capacitor. if it seems to be very low, say less than 12 Ohms or so, resolder out the mains rectifier stalk, or diodes, whichever may used, and chck it for juction short. If shorted, replace it. Check out the switching regulator also. In most cases this regulator may get damaged due to power supply spikes. In some sets, there is a MOV [Metal oxide veristor], connected accross the main AC line, after the switching point. this component is used as a protection, and if there comes any overvoltage or voltage spikes, this veristor will get shorted, blowing off the fuse, and further damage is prevented. Check this also. This component will look like a disc capacitor, normally black or green in color. Check these, and further check most of the power regulator components, such as Zener diodes for short. Before switch on your TV. make sure you have tested all the componets in the power regulator side. OK.

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1 Answer

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hello! what u have not told is whether the power on light is still showing . but its adivable for a technician to check the powersupply and Horizontal section for any damaged part becouse there's posibilty of unstable current burning something.

bye

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It sounds like your power supply unit as some leaky components, normally the bad powersupply unit show these types of symptoms. Try borrowing a powersupply unit from a friend that is similar to yours and replace to check if the powersupply unit is the culprit. If cornfirm PSU, than you neet to get yours fixed.

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