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Tube TVs
the tv you see a black strip below is the cyberlux
14
hace 5 años
hace 5 años
I have not been able to remove it with anything I have changed the screen I have changed the vertical I have changed all the filters near the vertical I have changed the yoke I changed the card that is installed behind the screen and still continues with the fault
9.501
hace 5 años
Hello colleague: if you cannot solve it from the sevice mode, enter the chassis number to see the diagram ... ok ..
9.501
hace 5 años
comment if you have the (R408 of 1,2ohm) and (R406 of 1ohm) between mass and the return of the vertical cable q, comes from the yoke ...
9.501
hace 5 años
comment if you have the R q, the name in its vertical stage ... and the uvico ... has as a vertical lc the LA78041 / STV8172 ... has 15v + in pin2 and 6 ... has 15v- in pin4. ..okay..
9.501
hace 5 años
check this scheme of the vertical stage of a cyberlux tv .... see if the components of the vertical coinsiden with those of your board ...
https://ibb.co/7299wkr
264
hace 5 años
Hello friend here is this diagram see if it is similar to the one there.
http://www.mediafire.com/file/vkhcc8samyhk8al/Chasis+PH08K-N22.pdf
9.501
hace 5 años
colleague: if it is the chassis PH08K-N22 ... and if in one case you can not solve from the service mode ... use the R459 of 1.2ohm in the vertical stage and weld an R of 3.3ohm or 2.2ohm in parallel with the R459 and you see if it already fills the screen ... if you open a lot you change it by 10ohm ... with some of these values it will open the screen ... comment if it has the R459 in the vertical stage ... this only if you cannot solve it from service mode ... ok ..
9.501
hace 5 años
friend opened the scheme q, they sent him ... if I don't check it, check if coinside the components and resistors q, they are in the vertical stage of the scheme ... with the comp, q, they are in the vertical stage in your plate ... ok ... if there are coinsidencias of the same comp, uvica the R459 ... the R459 cannot measure 0.3ohm ... in the 1.2ohm figure scheme ... look closely and measure it on the scale (x diodes) you I should give (approx) 1.2ohm ... maybe you are measuring another R ... uvica the R459 if it is q, it is on your board and measure it back and comment value ...
9.501
hace 5 años
friend: look closely xq, that is not the value of the R459 ... desoldala of a leg to measure it well ... here I send you the scheme of the vertical stage where the R459 is ... compare with the resistance of your plate and see if there's the R459 ... ok ... and then I'll send you the solution to that prob, but tell me if it's the R q, uvicated 459 ...
14
hace 5 años
No friend, that was fine, it is great, without letters or anything, I am trying to send you photos sooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo much
264
hace 5 años
hace 5 años
good friend if you already changed everything you mention then your fault is in the configuration of the epron, usually spoiled by false contact among other things, you must change it for a new one programmed according to the model and chassis of the tv.
Or to enter the service mode and try to correct the fault from there, sometimes it has happened to me that after correcting from service mode the fault is presented again, it is that the memory is already damaged, it is only necessary to change it to a new one programmed .
264
hace 5 años
Enter the menu with this code: Menu, 6, 3, 8, 4, you will get an "M" in the upper left, pass the menu with the Mute key until you reach a menu then you are placing the numbers from 1 to 7 I think. but what you need is in sub menu 1 there are the parameters for vertical and horizontal balance. Before changing them, look at what number they are placed so that if it is not the one you need, you can put it back there.
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