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Tube TVs
LG TRC TV. Elongated image
hace 5 años
hace 5 años
Greetings friends. I need to narrow the screen of an LG of TRC to which a flyback and the screen were adapted. LP DISPLAYS TV LG 21 TYPE A51GDJ820X NO SERIES L209 NO Made by LP Displays ROHS
46.781
hace 5 años
hace 5 años
Since the defect is due to the adaptation of the flyback, it may mean that it is too wide (sideways).
Enter the SERVICE MENU and reset the respective parameters.
17.741
hace 5 años
hace 5 años
I understand that narrowing is because it is enlarged horizontally. If not, excuse me.
You change tube and flyback.
Now the yoke of which tube did you use?
Maybe I leave the one with the tube that changed. If so, try placing the original yoke that comes in the TV tube that I remove. If it does not improve enter servi mode. Or you will have to change capacitor values.
10.397
hace 5 años
hace 5 años
Hello, if it is wide, a good trick is to use a small magnet and put it on top of the wide coil, if you enlarge it you turn and turn, you look for the position that gives you the best image, then you stick it with silicone that holds temperature In that place, I have done this many times to correct when the image is missing or left wide and I cannot correct in a service way or to not change values of components that is sometimes dangerous, greetings
17.741
hace 5 años
Hello PR. Hopefully that trick works. Since it is new for me. I never did it . If you give the key you give my thumb. And congratulations
10.397
hace 5 años
Hi Luis, I did this after a lot of experimenting with the width in these TVs at the beginning, I only disassembled the width coil and pulled out or put more wire, then this occurred to me and I continued doing it many other times since it was easier, I used the magnets that came in the cases of the cel and women's wallets, I have also used small speakers and headphones to not modify the circuit, there is no heating on the TSH and thanks for the congratulations but I have more than 40 years of service look if we have done weird things haha
hace 5 años
hace 5 años
Thanks everyone for your help. Enter the service mode by pressing the menu of the remote control and the menu of the button panel and adjust various values.
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