Question about Televison & Video

Open Question

Panasonic ct-27g23w partial vertical collapse (top and bottom).Already changed ic LA7838 and resoldered joints,problem still persists

Posted by on

4 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

  • 236 Answers

SOURCE: Buzzing sound, no picture on my Panasonic TV

You might have a short causing the set not to start. Probably in the horizontal/high voltage circuit. The buzzing sound that you're hearing is the power supply overloaded. Stargazer

Posted on Apr 23, 2007

  • 556 Answers

SOURCE: tv daigram

 

 

http://www.datasheetcatalog.com/datasheets_pdf/L/A/7/8/LA7838.shtml

Posted on Oct 17, 2007

  • 556 Answers

SOURCE: PANASONIC TV

http://www.datasheetcatalog.com/datasheets_pdf/L/A/7/8/LA7838.shtm

hope this will help

good luck.l

Posted on Oct 17, 2007

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Partial vertical collapse, picture and buzzing sound


Check the solder joints on the vertical IC. If you reflow the joints and the problem persists replace the IC. Buzzing sound may be the flyback or something dealing with high voltage. Take the back of the TV off and see where the sound is coming from and see if you can see anything when you turn the TV on. Stay away from the TV and don't touch anything when turning it on.

Dec 28, 2012 | Panasonic CT-27G23 27" TV

2 Answers

1999 Panasonic CT-3269SW No picture; just a colorful horizontal line through the center of the screen... tilting & tapping used to pop the picture back. No longer responds to this method; just stuck...


Sir the problem of your unit is the thermal intermittent caused by cold solder or dry joints in the solder part of your unit specially the vertical section of your tv.
ekcnoel_15.jpeg

ekcnoel_16.jpeg
It is much better if you use a magnifying glass to determine the cold solder joint or dry joints. To fix this just resolder this cold solder using a soldering iron, soldering lead, desoldering pump, Note be sure not to connect separated pin if accidentally connected may caused much damage to the unit hope this help good day and best regards.

Sep 23, 2011 | Televison & Video

2 Answers

Tv on appears black screen with a bright horizonal line in the middle sometimes with voice


You will have to resolder the vertical IC and in most cases replace any capacitor that is near and next to the vertical IC. There may be three capacitors that will be replaced, And while you are in the process of reworking the board inspect for any and all grounds that may need resoldered. You will have to look very close to find these. And you should search the deflection side of the board for two capacitors that have a 160 volt to 250 volts at 1MF, or 2.2 mf or 4.7Mf. By now these little guys are weak and need replaced. Thanks for asking and show a few hands of support!

Jan 27, 2011 | Panasonic CT-32G23 32" TV

1 Answer

Our tv, a Panasonic # CT-36D11E/CT-36D11 only shows a horizontal thin line across the screen. The sound is fine - any ideas? Is it time to replace or could it be repaired cheaply?


Resolder the vertical IC and replace those capacitors near and next to your vertical IC. If the horizontal line still appears, you may have to replace the IC. Thanks for asking and be caredful!

Jun 18, 2010 | Panasonic CT-36D11 36" TV

2 Answers

JVC 31" TV Vertical Screen Jumping


I've heard this is could be a cold solder joint and am looking for advice on which IC to re-solder. 1 whatever you have heard is correct as whenever you smacked the lelt side it works fine. 2 you will have to check loose contact in vertical section. your vertical ic might be located at the left side of the tv. 3 check any connector is loose near vertival section. 4 any preset is loose in vertical section. it is a simple problem if you are not technical person please get it done by tech person. as your tv is old & if it is done by tech person tell him to replace all elrctrolytic capacitors in vertical section. good luck.

Sep 20, 2007 | Televison & Video

2 Answers

Panasonic CT-27624CA TV chassis AP 335


you have problems with Ic vertical la7848 you need resoldering or change

Sep 10, 2007 | Panasonic CT-27SL15 27" TV

1 Answer

Lose vidio


The solder joints on the vertical output IC have come loose. This is very common on those sets. If you do not have any experience resoldering small parts on PC boards, have the IC resoldered by a qualified tech.

Aug 27, 2007 | Panasonic CT-27G13 TV

1 Answer

Panasonic CT-32D11 TV


Your vertical output IC has stopped working. This is usually caused by the solder joints cracking loose and the IC will either short out inside or just stop working. Sometimes a small capacitor next to the IC, called the pump-up cap, will go bad and cause the IC to fail. In any case, the vertical output IC should be resoldered or replaced and all circuits checked by someone experienced in repairing TV's.

Aug 05, 2007 | Panasonic CT-32D11 32" TV

Not finding what you are looking for?
Televison & Video Logo

Related Topics:

43 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74106 Answers

Cindy Wells

Level 3 Expert

5096 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

6694 Answers

Are you a Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...