I want to know the answer to the following question:
How late did Nintendo continue to repair Famicom units?
All the background I'm provided with is that "Instead, during the first year of Nintendo's successor console the Super Famicom (named Super Nintendo Entertainment System outside Japan), the Famicom remained the second highest-selling video game console in Japan, outselling the newer and more powerful NEC PC Engine and Sega Mega Drive by a wide margin.". Is that enough to answer the question?
Answer: no