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Sharp tv model 21 rk 21 ,the fault is when i switch on the tv its getting on eht coming and filament glowing no rashter immediately it goes of ,please tell me the protection point

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  • Sharp Master
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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. Pull up older posts.
http://electronicshelponline.blogspot.com/ Type in this key phrase " my service table today " in the search box at the top right of the the home page, to get gathered some pages which has the details of practical experiences of the author of that site. The search result might display about 20 Nos of related posts. Press the "All posts" at the bottom of the list, then you can select them one by one.

Posted on Apr 25, 2017

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Posted on Jan 02, 2017

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SOURCE: sharp aquos fault

Thanks to this forum, I was able to confidently contact Sharp and get my TV fixed.

My 32" LCD had the same problem (sound but no picture) and was out of warranty, however I phoned Sharp UK and suggested that it was a manufacturing defect rather than component failure and should be repaired free of charge - which they did!!

Posted on Mar 19, 2008

JULIANFIX
  • 975 Answers

SOURCE: compaq colour monitor 21" MODEL P1100

TRY THIS, open Monitor , look inside the PC BOARD for a burn solder or cold solder around the area where you see a transformer , re solder any suspicious solder and try again, hope this helps , please rate this solution , AJ

Posted on May 06, 2008

Sharp Tech
  • 63 Answers

SOURCE: uc-21 code

I will have to take a stab at this at this code is not listed in the service manual. The UC codes deal with Counterfeiting! Either the user wanted to try and copy money or they copied something that had the colors very close to money so the only way to fix this is to have an authorized dealer call Sharp and have the boards ordered.

Posted on Oct 17, 2009

  • 1 Answer

SOURCE: tda9380ps /n3/3/1664 using in sharp tv power

tda9380ps /n3/3/1664 using in sharp tv power supply ok ,but no EHT ,the power LED are glowing red light press program key to change green light to return in few miniutes to standby in red light

Posted on Dec 06, 2011

vinceisaac
  • 2432 Answers

SOURCE: 21 inch LG tv switching on for 5 seconds and coming to standby. Again when I switch on the same thing happens. All Voltages are OK. The tv failed due to lightening during rains. I had replaced the v

how about the regulator have you been checked if ok.

Posted on Oct 05, 2012

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What's your question?onida oxygen thunder 21 inch TV EHT ok still filament not glowing


If EHT is OK; LOT is working fine, and the filament should glow. If not, check the continuity of the filament. If it is OK, check the continuity of heater winding of the LOT.

Jun 17, 2015 | Televison & Video

1 Answer

I have one LG 21" color flat tv (magic eye) and it is not getting start.It was working properly with some hissing sound but yesterday it didn't started, the LED at the front panel is glowing b


Hi Manher
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/

Sep 20, 2014 | Televison & Video

1 Answer

Model no. 32A33 lcd sharp tv. no picture. power red led glows. with remote on green led comes. no picture. some times sound is coming.


Main board fault. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/

Apr 04, 2014 | Sharp LC-32A33M LCD TV

1 Answer

"tda9380ps /n3/3/1664 using in sharp tv power supply ok ,but no EHT ,the power LED are glowing red light press program key to change green light to return in few miniutes to standby in red light"


Check the horizontal output transistor. Replace the same. Collector to base, or collector to emitter short to this transistor is a common case. If you wish to get more details, check this link. http://electronicshelponline.blogspot.com/ Selecting the view option, either to Mosaic / Time slide, can be selected by the drop-down list, at the top left of the display window, will make surf easy. You can also do a search, by type in the brand name/model number/IC used, in the search box at the top right of the display window.

Oct 23, 2013 | Sharp 21" Multi System Stereo TV

3 Answers

Tda9380ps /n3/3/1664 using in sharp tv power supply ok ,but no EHT ,the power LED are glowing red light press program key to change green light to return in few miniutes to standby in red light position...


tda9380ps /n3/3/1664 using in sharp tv power supply ok ,but no EHT ,the power LED are glowing red light press program key to change green light to return in few miniutes to standby in red light

Aug 30, 2011 | Sharp 21" Multi System Stereo TV

2 Answers

Tda9380ps /n3/3/1664 using in sharp tv power supply ok ,but no EHT ,the power LED are glowing red light press program key to change green light to return in few miniutes to ...


Tda9380ps /n3/3/1664 using in sharp tv power supply ok ,but no EHT ,the power LED are glowing red light press program key to change green light to return in few miniutes to standby in red light position ,please to help of rectivied this problem and send circuit diagram and IC pin configaration thanking you sir

Mar 03, 2011 | Televison & Video

1 Answer

I have one LG 21" color tv ( MACH 4 model) and it is not getting start.It was working properly with some hissing sound but yesterday it didn't started, the LED at the front panel is glowing but TV is not...


Hissing sound comes from leak EHT transformer but front LED working means your power supply is ok so you need to check horizontal out out Transister and series resitor feeding to voltage from B+ to that transistor if it's gone pls replace the EHT transformer as well
in srilanka EHT is around $5 and transistor is $1

thanks

Aug 27, 2010 | LG Televison & Video

1 Answer

I can hear the tv but cant see it


Video circuit problem.

Check whether you get a filament glow in the picture tube neck. It will be faint. If OK,

Just place your hand near the front of your screen, when TV is on. If EHT is generated you will feel the static effect on face plate on the glass. Your hairs will drawn towards the picture tube. No EHT, no such effect will be there. Refer trouble shooting procedures.

Mar 29, 2010 | Sylvania 6419TA 19" TV

1 Answer

Ticking sound


ticking sound (like a Watch) coming from around the Flyback Transformer but I don't see a spark is called EHT voltage . if eht voltage is ok 1 check filament is glowing or not if it is ok check voltages on crt. 2 if it is ok check luminance section in chroma section. if filament is not glowing check for low eht due to hor section check power supply output also. good luck

Sep 18, 2007 | GE 25GT270 TV

1 Answer

Sansui 2110


as your sound is ok so your power supply & high voltage section is ok.(eht). please check 1 filament is glowing, 2 crt base for loose 3 voltages on crt points 4 luminance in chroma ic

Sep 14, 2007 | Sony FD Trinitron WEGA KV-36FS120 36" TV

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