panasonic tv white lines at top screen

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starman
starman's picture
panasonic tv white lines at top screen
i have a panasonic ct 2701 tv that when turned on it has white lines on the screen that after awhile they go to the top of the screen sometimes therers 2 lines at the top and some times theres four or five lines how can i fix this problem and can you send me step by step pictures of the board and instructions on how to fix the problem  the lines seem to be folding the rest of the screen is fine only aboye 1-1/2 to 2inches at the top of the screen has the problem thanks.
Larry Dillon
Larry Dillon's picture
There are capacitors in the

There are capacitors in the vertical drive circuit and the sweep power supply circuit that needs to be replaced.  If I had a service manual on this set I would be able to tell you what caps go bad.  If your not trained electronic techs, its also not a good idea to be experimenting inside these sets, as they hold high voltage, and can give ya a bit of a shock if your not carefull.  Also all the parts are soldered in place  so your going to need to know how to unsolder as well as solder or you can ruin the Printed circuit board.  Please if you have no experience with TV sets seek out a trained tech to assist you. Good Luck and do

starman
starman's picture
 

 

how can i fix this problem please help.

Larry Dillon
Larry Dillon's picture
Do you know how to solder and

Do you know how to solder and unsolder? Do you have a capacitor checker? Do you have a schematic diagram? If the answer to one question is no, then I can not help you, as there are certain tools and things you need to know before you should touch a TV set. Its most likly a capacitor as i stated before, but if you dont have the tools, How can you check it for being bad. If you don't have a service manual, you can not tell what capacitor is in the vertical circuit, unless you look and test every capacitor that has the same prefix as the vertical output IC. You can't tell, without being experienced, where the vertical IC is. Sorry my friend there is no quicky fix for this set.

starman
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is this what the cap looks

is this what the cap looks like if so i have found them and yes i can solder and unsolder whats the next step Larry Dillon ? thanks

Larry Dillon
Larry Dillon's picture
Theres no picture my freind,

Theres no picture my freind, Do you have a schematic?  I cant tell by a visual. I need a schematic diagram to see  how the circuit works.  This is like when your check engine light comes on, you need a diagnostic tool to see whats bad.  I need a schematic to go throu the circuit.

starman
starman's picture
no i dont know where to get

no i dont know where to get the schematic diagram

 

thanks

starman
starman's picture
i could not wait any longer i

i could not wait any longer i took the set to the repair shop three bad caps and changed the ic $75.00 not bad but i would of liked to fixed it my sely but could not find the repair guide nor skymatics thanks for the help.

Larry Dillon
Larry Dillon's picture
Thank you so much for letting

Thank you so much for letting us know.  I looked for this service manual for days and could only find it as unavailable anymore from panasonic. Frown

arbee_07
arbee_07's picture
panasonic model-th14z2..

panasonic model-th14z2.. trouble, vertical hold, cannot stop..

Larry Dillon
Larry Dillon's picture
there are bad capacitors in

there are bad capacitors in the vwertical circuit

arbee_07
arbee_07's picture
pls tell about trouble of t.v

pls tell about trouble of t.v. panasonic model-th14z2, trouble- vertical hold cannot stop.

Larry Dillon
Larry Dillon's picture
sorry ai do not have a

sorry ai do not have a schematic on this set. you will need to check all the vertical capacitors with an ESR type capacitor tester meter

Moroka Cyrics
Moroka Cyrics's picture
I have a TV it shows lines on

I have a TV it shows lines on top of screen. I know how to solder and unsolder. I have a tester, pliz help me how to test for capacitance. pliz help.
your assitance be highly appreciated.

THANK YOU!

Larry Dillon
Larry Dillon's picture
you need an ESR meter my

you need an ESR meter my friend, a special capacitor tester they run about 145 bucks or so. A standard cap meter or multimeter will not test them correctly

Janet McFadden
Janet McFadden's picture
I got a memory stick and want

I got a memory stick and want to put pictures in it but I can not get it to download. I know you copy & paste but it want let me. What am I doing wrong? Thanks Jan.

Larry Dillon
Larry Dillon's picture
is the computer seeing the

is the computer seeing the memory stick???after you insert the stick go to my computer to see if it is listed as a d or e drive could also be a f ora G drive depending on how many drives you have.

Larry.

ramone
ramone's picture
I have panasonic th-14Z2 tv

I have panasonic th-14Z2 tv and it just only lights the LED if turned on.. I guess its ic str has problems.. is it right??

 

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