if Ringer is not working in LG KG270 then this image will help you to solve this problem.ringer problem can be solve with this diagram easily as it is shown with red lines all points are indicated clearly so make jumpers as shown in diagram here is a little ringer ic so check all these point if they shows continuity with meter then its ok other vise make jumpers as given and it will solve ringer problem in LG KG270.