P.S- If you enjoyed reading this, click here to subscribe to my blog (free subscription). All through a series of simple steps with its wide range of custom viewing options, your LG smart TV is really all about you. If you have electronic repair articles to share with us, please contact us HERE. And picture wizard III is LGs user-friendly guide that takes you through some fairly sophisticated calibrations of the black level, white level, tint, color, and horizontal, and vertical sharpness. Please give a support by clicking on the social buttons below. This article was prepared for you by Suranga Bandara who owns an Electronics repair shop in Anuradapura, Sri Lanka. #Lg tv vertical color lines proIf you would like to be a pro in troubleshooting and repairing CRT TV, I can recommend Humphreys Ebook to you. If the DC supply voltage is good I will directly replace the vertical output IC and retest. I then turned On the TV and normal picture appeared-see the photo below:Īssuming in the above case I did not find the bulged e-cap, I will start to check on the DC supply voltage to the vertical output IC. I soldered the new e-cap and checked the surrounding components for dry joints and all the solder joints seems to be intact. The value of the E-cap was 1000uf 35 volt and it was easy to find the part. When the e-cap was removed I found that the bottom part of the capacitor almost came off. To keep this in perspective, we had the room lights nearly off so we could see this clearly. I saw a slightly bulged e-caps that was located in the vertical output IC area-see the photo below: After the panel was replaced, the vertical bands are still subtly visible. The first thing to do is to use visual inspection to look around the vertical output IC section. The photo below is just how a CRT TV look like once the cover was removed. Sometimes the vertical yoke coils connector can have dry joints and in very rare case, vertical yoke coils can be open circuit. One horizontal line problem in CRT TV or Monitor is actually very common and the usual cause were dry joints in the vertical output IC, missing DC supply voltage to the vertical output IC, improper DC supply voltage (usually low dc supply voltage), bad surrounding components, bad vertical output IC and etc. The complaint of this CRT TV was one horizontal line (about an inch thick).
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