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I HAVE SHARP COMPANY 21 INCHES CRT MY FRIEND TV SET PROBLEM IS SET DEAD IN POWER SUPPLAY TRANSISTER 1886 REPLACED AFTER POWER SUPPLAY IS OK FBT ARCKING THEN IMMEDIATLY SET SWITCH OFF SET IN CIRCUIT R6

IN POWER SUPPLAY TEA2261IC TRAD1886 ,IF VCD IC NOM52340SP,FBT NO F147

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  • Sharp Master
  • 1,249 Answers

Bad flyback transformer, freewheel diode, snubber capacitor, horizontal output transistor. If you replace one, replace them all. Also could be problems in the secondary power supply, these units use the flyback transformer to feed the audio and vertical sections.

Posted on Nov 26, 2014

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  • Sharp Master
  • 74,383 Answers

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.
http://electronicshelponline.blogspot.com/

Posted on Nov 22, 2014

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Posted on Jan 02, 2017

  • 556 Answers

SOURCE: tv dead

please check flyback transformer for short
good luck

Posted on Nov 02, 2007

  • 1 Answer

SOURCE: LG vertical failiure vertical line at the bottom of the crt

replace the vertical driver ic and the proccesor ic

Posted on Nov 25, 2008

  • 56 Answers

SOURCE: chopper transister blown fuse blown

100k ground from ic pin replece 3 electrolytic cap . Adjust preset for 95v if it isphilips tv

Posted on Aug 19, 2009

gopakumarg43
  • 74383 Answers

SOURCE: I haveSansui 1403ctv the tv set is dead.no output from smps.When I switch on the tv immediatly switching transister(c1802) will be short.

Check the freewheeling capacitor connected to the collector of this switching output transistor for open. Check the serial resistor too.

Posted on Dec 05, 2012

gopakumarg43
  • 74383 Answers

SOURCE: no power Samsung flatscreen CRT 21 inch TV

Check its fuse. Check the rectifier diodes. If you wish to get some details, check the site linked here. Pull up older posts. Check the site in 'Mosaic' view. It will make search easy. http://electronicshelponline.blogspot.com/

Posted on Jan 18, 2014

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