LG TV "No Signal" Error: Warranty Dispute After 7 Years of Use

I have been using my television for approximately 7 years since the invoice date of June 4, 2016. Suddenly, it started to give a "no signal" error. I requested an examination of the television by the authorized service directed by LG, and I also mentioned that my home is insured. However, the service personnel issued a report without inspecting the television or making any effort, and they demanded a fee of 150 TL for this report. It was stated that if the report is submitted to the insurance company and approved, the motherboard will be replaced, and the television will be returned to me. The report stated that "the malfunction is related to the lifespan of the part." Since the malfunction was attributed to the end of its lifespan, the insurance company did not cover the cost. However, when I purchased the television, it was stated that it had a 2-year warranty and a lifespan of 10 years. I contacted LG by phone to address this issue, but they informed me that there was nothing they could do. I believe our conversations are recorded, and I expect them to provide these recordings upon request. (I have also requested LG to send me these conversations.) How can it be determined conclusively that the television has reached the end of its lifespan without any intervention, and how can my television's lifespan be considered expired after only 7 years when it was supposed to be 10 years? On what basis was the statement made that the lifespan is 10 years? I request that my grievance be addressed and assistance be provided in this matter. I look forward to your prompt response and assistance regarding this issue. Sincerely,