Question about Sansui TVS2750 27"

Open Question

Sansui sv2918 no picture blue screen white lines sound ok

When the tv is switched on, a black and whit pic appears for 10sec the the screen turns blue and white horizontal lines appear.
Note - sound is ok

Posted by on

6 Suggested Answers

bkvinr
  • 76 Answers

SOURCE: Horizontal White Line

In your statement i found during switch on you get picture. Check whether in a few minute picture suddenly goes to the horizontal line or height reduces and then goes to line. If suddenly goes means change any zener diode in pumpup circuit. If it is not means LA 7840 ic getting imbalanced supply voltage i.e.,negative and positive voltage are not equal. Suppose only one vcc means supply resister getting high ohms and change the the supply resister.

Posted on Aug 24, 2007

  • 1694 Answers

SOURCE: Sansui SV2918 has no picture and audio only a blue screen

Have you tried the a / v inputs?? If they work,might be a bad tuner.If they don't work,then your symptom is no video-no audio=
power supply problem? Check all voltages....T.

Posted on Oct 25, 2007

SOURCE: sansui tv sv2918

Sweetch on thr tv just one vertical line comming in center of ty screen

Posted on Jun 20, 2008

  • 1 Answer

SOURCE: sansui tv sv2918

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

Posted on Nov 26, 2008

  • 978 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

bhatgiri73
  • 106 Answers

SOURCE: Tv not switching on Sansui SV2918

all the transistors ,& capacitors i.e 47mfd 63v or100mfd 63v must be changed before u on the tv. if 300v is not coming to middle pin of d2449 then 4.7ohm resistor(fusible) may be gone

Posted on Mar 24, 2010

Testimonial: "It has helped me very much and assisted me in finding the fault. Thank you."

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

No picture, no menu, black screen, no raster, sound ok


From your detailed description, it sounds that the main chroma processor IC has damaged. Raster means nothing, but the lighted screen that appears, when a TV is switched ON. For some brands, there will be a blue screen; when there is no signal input, and some others will have a bright white screen with some snow.
I advice you to contact any service technician, to get this TV repaired. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magazine" will make surf easy. Pull up older posts. Surf the site with patience. Do a search by type in the brand name of your device at its search box and press "Enter".
http://electronicshelponline.blogspot.com/

Jul 07, 2014 | Standard (CRT) Televisions

1 Answer

Hi.. Mine is a sansui tv and I bought it 3 years back. Now it is showing a horizontal line on the screen. Sound is fine but I can't see the picture, I just see one white horizontal line on tv...


The problem is vertical failure. Vertical output section to your TV ahs the fault. You ahve to check the vertcial output circuit for any component failure or loose solderings.

May 11, 2012 | SansuiS3275 TV

1 Answer

TV BLACK SCREEN WITH THE POWER ON.


It needs repair.
If the line is vertical, then something is damaged on its horizontal circuit section on the mainboard.
If the line is horizontal, the vertical circuit section is damaged.
have it repaired to a qualified service center or person!
avoid switching it to avoid further damage on other parts!

May 28, 2009 | Philips 32RF82S TV

1 Answer

Philips 27PT6441 27" TV Problem


jon5902,

Pls note that my experience is with the phillips 27" model27PT6341/07. It may not be the same board as yr model, as I can't remember nor find the service manual anymore. (browse around online for it though)

However, after taking the back off. Look close to the rca jack and svideo connection. Mine is located about an inch from the svideo connection.

Here are some pics that may help you.
http://farm4.static.flickr.com/3215/2337629026_eaa30cfa18.jpg?v=0

http://farm3.static.flickr.com/2411/2337627420_b45bbf1a74.jpg?v=0

The new one is the black and gold one marked 10uf 100v in the pic.
Other users have advised to go as high as 10uf 250v, to avoid having the cap overload again.

PS. I had the lines for about 2 weeks. They got steadily worse then one day my tv looked like it was broadcasting an hourglass. The lines converged in the center and flared outward (no pic).

Sep 10, 2008 | Philips 27PT6441 27" TV

2 Answers

Sansui tv sv2918


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

Jun 18, 2008 | SansuiM1315 TV

1 Answer

No picture


hi, the problem is in the vertical ossilation.. let me know

Dec 18, 2007 | Sansui DTV2760 27" 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

1 Answer

Philips wide screen 32in Digital TV


You probably have a component breaking down on one of the circuit boards. It would have to be checked out to find out which one. Stargazer

Feb 13, 2007 | Philips Magnavox 20MT133S 20" TV

1 Answer

Tv showing blue screen with flyback lines sound ok


Flyback lines? Is the picture all white with no brightness control with faint horizontal faint lines? If this is what you are saying, the screen voltage could be bad, and if thats the case, the picture tube or the flyback itself could be bad. You could also have a bad connection on the crt socket

Dec 27, 2006 | Philips Magnavox 20MT133S 20" TV

Not finding what you are looking for?
Sansui TVS2750 27" Logo

Related Topics:

96 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sansui Standard (CRT) Televisions Experts

The Knight
The Knight

Level 3 Expert

68223 Answers

freddyo

Level 1 Expert

13 Answers

rugby prop

Level 3 Expert

446 Answers

Are you a Sansui Standard (CRT) Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...