Doddanagamangala is where the owner closes the lid and starts out. The lid comes off at SAI Laptop Service in Ganesh Complex, Electronic City, not in Doddanagamangala.
A crack and a dim image are different
Broken glass is a panel job when the panel is damaged. A dim or flickering image can be the panel too, and they check before they order one. A black screen with the fan still turning might be a cable or the board, so they do not jump to glass. Batteries, keyboards, slow drives, heat, and a malware clean stay available when the screen is not the fault.
You avoid a panel you did not need
That is the benefit. The quote names the real fault, and paid work starts only after that quote.
Dial 099724 47766 and say if the glass is broken or only dark. The services page, the Doddanagamangala repair page, and the main tech page match this counter.