AWA CM-P42LC1 buffer problem ? Or...

[maxvalutech]

This set belonging to an older chap displays a single pixel width black line horizontal across the screen side to side and exactly in the middle. Have tried cleaning buffer screen feeds and putting ribbons out/in various times and getting several variations in display for the area concerned but when all that goes away still left with the single pixel line. Understand it could be a screen attachment problem but no response of any kind when putting what pressure I can in that area. The logic looks to be in main. All else with set is good. The line is visible all the time including menu display. Ideas.....???

[attainteddragon]

Re: AWA CM-P42LC1 buffer problem ? Or...

i might be off here, but check the buffer boards for an open line that matches the area of screen that you are missing.

[maxvalutech]

Re: AWA CM-P42LC1 buffer problem ? Or...

What I find interesting is the line appears to be exactly in mid screen as if the upper and lower sections are not quite coming together which is why I mentioned logic board. Should have also said Vs and Va were close but I tweaked them and also checked other adjusters. Thanks attainteddragon what is the check procedure for buffers?

[maxvalutech]

Re: AWA CM-P42LC1 buffer problem ? Or...

Found a buffer board for sale by a tech but when I talked to him and described problem he advised that in his experience this problem was in almost all cases due to fault at screen. I had taken board out and gone all over it not finding any problem then reseated all ribbons after cleaning and checking them and trying again and again reseating the two near centre line all to no avail as thin black line came up every time. Took tech advice as solid and have written the set off. Noted it is actually LG bearing the AWA brand and first post should read control board is in behind the main.