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My samsung 21" crt tv having tda9381/ ps.....1774 only retrace lines no pic. sound ok. wht is the problm pls help me

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Posted on Jan 02, 2017

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SOURCE: I have a samsung TV 21

Is it folding to the middle screen? Then vertical IC is loosing connection to its board or capacitor is running dry or the IC itself is failing.

Resolder or replace. If you are not inclined in electronics have it service by a qualified one.

Hope this helps.

Posted on May 14, 2009

  • 44 Answers

SOURCE: I have samsung 21 green screen

Either something wrong with the picture tube or something with scart input if you use one. / / David

Posted on Jul 29, 2009

bhatgiri73
  • 106 Answers

SOURCE: hi samsung tv using TDA

180 volts from LOT o/p to drive pict-tube guns is missing . or vedio driver ic is faulty.

Posted on Jan 22, 2010

SD Tech
  • 14553 Answers

SOURCE: TOP RETRACE LINE IN THE SAMSUNG CRT TV MODEL CB5081Z

you are going to find a open filter capacitor right at the vertical output chip (usually a 220 uf at 25-35 volts) that is open or low in value.

If the set is run like this it will soon destroy the output chip.

Posted on Mar 23, 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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1 Answer

I have a lg crt tv set is normally start but no display no sound increase screen lot came retrace line with gray screen I change tda9381... and base no change please help me. .


The IC TDA9380 & 9381; that we get today's' are not working types. I too did felt this, and I've started rejecting sets using this IC; out my service room. I'm doing this work since 43 years. and have no intend to lose my money for buying this IC; or work with such type sets.
Wish you Good Luck; if you get a working IC any more.
google.com/+GopakumarGopalan

Feb 02, 2015 | LG Televison & Video

1 Answer

How do i repair a sharp crt tv having retrace line appears on screen?


You need to replace Electrolytic Caps some on the PCB on the end of the CRT neck. and some in the MAIN PCB. Digikey is a good sources of parts and get the caps that are 105C. they last longer. There are other venders out there to.

Dec 24, 2014 | Sharp 21B-S10 21" TV

1 Answer

What can be done with retrace lines on my set


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/
Reasons and repair procedure to retrace lines in picture with CTVs are given with illustrations.

Aug 13, 2014 | Samsung TXD1972 19" TV

1 Answer

Fault finding retrace line on screen ?


Check the video output supply voltage. If it is less than normal, retrace lines will be visible. If the screen voltage is greater than normal, the retrace lines will be visible. You should check all these. 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. Surf the site with patience.
http://electronicshelponline.blogspot.com/
Check these above said voltages at the CRT base card.

Apr 14, 2014 | Sansui Televison & Video

1 Answer

Crt tv is half screen in vertical line and have retrace lines? what is the problem pls help...


Check the electrolytic capacitor used as video output supply voltage [280VDC], which goes to CRT base card. Usually this capacitor will have a value of 33 to 47MFD 350V. If this capacitor deteriate its value, this kind of fault can occur.

May 28, 2013 | Televison & Video

1 Answer

Red colour on screen


if crt pic tube magnitized need to degausse with coil

Jun 01, 2010 | Thomson 21DC320 21" TV

1 Answer

Hi samsung tv using TDA 9381ps/0489 problem is Retrace line sound ok


180 volts from LOT o/p to drive pict-tube guns is missing . or vedio driver ic is faulty.

Jan 22, 2010 | Samsung Televison & Video

1 Answer

I have a samsung TV 21" flate screen PLANO the pic become thin coming on 1/3 of vertical screen sound is ok


Is it folding to the middle screen? Then vertical IC is loosing connection to its board or capacitor is running dry or the IC itself is failing.

Resolder or replace. If you are not inclined in electronics have it service by a qualified one.

Hope this helps.

May 14, 2009 | Samsung Televison & Video

1 Answer

Half screen showing


ok
keep tv off.
it will only get wors
if sumon dosent work on it soon
the problem you are having in the vertical section of the tv
hav a repairman resolider all conection on the vertical IC and check the serounding componets for falts.

regards daniel.
PS the repair takes me about 15 min.

Jan 13, 2009 | Samsung TXG2746 27" TV

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