Upon arrival inspected system and found control board was not properly displaying status. Inspected further and light started flickering while checking board. Connections broken and causing intermittent issues. Control board needs replaced. With age of furnace recomending replacement over repair due to risk of further part failure - Melvin is ready to replace control board but would like a quote for the furnace just to know a price because unit is intermittently operational. I have recommended that he hold off on repair until he has decided on replacement.