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74cm sansui sv2918 clr tv power led comes on for few sec then goes off .all you hear is a faint ta ta ta sound and no picture

I have replaced PC123; IC MC44608P40;IRF630MFP;AND STV 8172A BUT PROBLEM STILL REMAINS

Posted by Anonymous on

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Posted on Jan 02, 2017

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SOURCE: TV Will not fire up.

try this,hang the collector pin of the HOT then try to switch on check the voltage its 115v dc,and check also the oscillation drive at the base of HOT take your VOM at 10v ac,ther must be a flactuate at the pointer.if the two procedure are good.plyback is deffective.but if u dont have any measured voltage at the collector of HOT ur problem is in the power supply. mc44608 is use at all old model philips tv.email me for wat happend

Posted on Apr 08, 2008

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  • 979 Answers

SOURCE: Powersupply Faulty

Check for short circuit on your Powersupply. If you can isolate it, much better. check the voltage regulator if it supplies power to the system. better still check the regulator itself.

Posted on Jul 10, 2009

palaboy
  • 5807 Answers

SOURCE: sansui sv2918 keeps blowing k2996 mosfet. Power led flashes and ta-ta-ta sound is heard

Check the Flyback Transformer

and associated circuits.

If 2SK2996 is blown, it may take out the PWM IC and some components

that goes with it.




Let me know what you find or needs further assistance.

Posted on Sep 23, 2012

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1 Answer

MY SANSUI SV2918 ITS ONLY STANDBY BUT SPEAKERS ARE SOUDING TA-TA-TA-TA


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 display window of the home page, to get gathered some pages which has the details of practical experiences to the author of that site.

Jun 24, 2016 | Sansui Televison & Video

1 Answer

I still have a sansui tv(model sv2918) 74cm. My problem is that my screen does not appear clearly. Its lost its original colour it seem greenish on left and right sites. What might be the cause of that?


Contact any service technician. Its video output section circuit, and de-gassing circuit should be checked. This is not a user repairable service work. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

Nov 24, 2014 | Televison & Video

1 Answer

Sansui sv2918 keeps blowing k2996 mosfet. Power led flashes and ta-ta-ta sound is heard


Check the Flyback Transformer

and associated circuits.

If 2SK2996 is blown, it may take out the PWM IC and some components

that goes with it.




Let me know what you find or needs further assistance.

Sep 17, 2012 | SansuiM1315 TV

2 Answers

Picture shows for 1 sec when switching on TV, and then screen goes black on my Sansui TFT SV-2010 LCD Monitor


Now u turn on the tv the tv pictures only flashes a few sec.than dies,but the tv still have audio sound left only?Yes,mean ur tv have a 1 or 2 long boards that are call a LCD inverter boards are the causes and the problems.These 1 or 2 long LCD inverter boards only job are to provided the tv LCD screen panel for a backlight for the tv to have picture only.Tries websites like Shopjimmy.com,Ebay.com to buy a 1 or 2 the tv long LCD inverter boards for the replacement.

Oct 03, 2011 | Sansui HDLCD3210 32 in. LCD TV

1 Answer

When I switch tv on at button on tv I van hear the tv goes on. No Picture. If I press buttonds on the remote I can see the red light come on that indicate the remote is sending signal. Here comes the best...


Replace , front panel switches , one or more switches goes high resistance
when suppose to be open circuit , my sv2918 74cm was doing weird things
with these switches going bad

May 10, 2011 | Sansui D 27" TV275 TV

1 Answer

Powersupply Faulty


Check for short circuit on your Powersupply. If you can isolate it, much better. check the voltage regulator if it supplies power to the system. better still check the regulator itself.

Jul 10, 2009 | Televison & Video

1 Answer

SANSUI SV2918 switches on after 30 minutes


Failing power supply. It takes 30 minutes to recuperate, then fails again.

Feb 07, 2018 | Televison & Video

2 Answers

Sansui tv sv2918


replace vert IC301, C432, ( D431 & R431 should also be blown)

Jun 18, 2008 | SansuiM1315 TV

1 Answer

TV Will not fire up.


try this,hang the collector pin of the HOT then try to switch on check the voltage its 115v dc,and check also the oscillation drive at the base of HOT take your VOM at 10v ac,ther must be a flactuate at the pointer.if the two procedure are good.plyback is deffective.but if u dont have any measured voltage at the collector of HOT ur problem is in the power supply. mc44608 is use at all old model philips tv.email me for wat happend

Dec 03, 2007 | SansuiM1315 TV

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