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Power supply ic blasted

Value of ic

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Posted on Apr 19, 2014

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Posted on Jan 02, 2017

SOURCE: my power supply is burnt

tangentsoft.net/audio/cmoy-tutorial/tweaks.html

Posted on Aug 03, 2010

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did u checked the supply it going to hi blast board power supply board ? if supply is okay then u have to check that 4 all mosfet and drive ic... just try to check later i will explain.... i m shure u will solve ur problem very soon keep it it touch with fixya....!!

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Short internal power supply


please check for any blown fuses, if there is replace with the same value, do not replace it with a higher value. also check resistors near the rectifier diodes, check full wave diodes & ic regulators, if you find an error replace with the same value or specs.

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I have an rca ctc186/7 series tv and it has no sound. We tried cleaning it, hooking other speakers to it and hooking up a dvd player and still no sound.


Hello

The audio output Ic inside your tv has damaged, or it doesn't get proper voltage. You just open your TV, and locate the audio output Ic. It can be located by following the speaker wires. Usually it will be screwed onto a heatsink. Check the input voltage with the help of a multi meter, af it is there, the Ic is damaged. Replacing it will solve the problem. If there is no voltage, follow the supply track and find out the opened circuit point. Usually a small value resistor, say 0.01Ohms in value, will be connected in series with the power supply to Ic. If it gets opened, there will be no supply to Ic, resulting no sound. If the audio outpu Ic get short this resistor will open. So keep in mind that, if this resistor is opened, there may be a short inside the output Ic, or come capacitors fitted with this supply line, after the reistor. Check the also for any short. keep a keen look at the solderings fo the leges of this output Ic. Some loose, or bad solderings also may be there. Anyway, your TVs audio output section is faulty. Find the reason and rectify it. If audio Ic is found defective, desolder it out from the board, and replace it with a same type and number. Ok

Gopakumar. India.

Nov 21, 2010 | RCA Televison & Video

1 Answer

Goodmans model gtvl32w26hdf. Switched itself off. have changed fuse, with not difference. blue standby light comes on, using remote press standby blue light goes off, screen remains black.


Good Day SIr, sound to me like your switching power supply is not working properly, there is an IC that controls the switching action of your power supply, this MAY be the reason why it stays off. locate the IC at the power supply section, replace it then test. There is also a possibility of open low value resistors near the switching transistor (very hard to locate). hope this helps.

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2 Answers

DPS-210EP-2 power supply blew up


hi there the 8 pin ic in question is a Viper22a available from good electronic stores i got mine from
Cricklewood electronics for a couple of quid , also replace the capacitor c72 47uf
hope this helped

my board is DPS-210EP B REV 00
should be same

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"Push Power'' and ''Protector"


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please help what should i do with it?

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Tv keep going on standby when you turn it on


tv goes into standby all the time if a power supply is not fine, what happens is that a power supply produces two voltages, one small one powers a standby components and bigger voltage powers a line transformer which later produces more small voltages,
then later cancels the first small voltage.

chec your power supply semi conductors like, transistors, diodes and small value resistors, on your power supply. some power supply uses a IC to oscillate a ht. so check a supply at a w/shop.

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1 Answer

Panasonic COLOR CT-27G14A


check Vertical IC out (LA78..) and resistor voltage supply from flyback transformer to this ic. Check the STR main power supply(and resistor near, change value), some times seems good out main board,but in operation not good

May 18, 2008 | Televison & Video

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