Thanks for waiting, solid red status light indicates lamp failure in TV.
Please replace lamp in TV to resolve the issue, lamp in this TV has limited life span and goes out after 3-4 years service and replacement will resolve the problem.
lamp replacement procedure is easy and written in TV user manual, please click this link
to download user manual copy and check page 25 for detailed instructions with exploded views.
Required Mitsubishi original replacement lamp is available in Mitsubishi Parts
for $99, it has part number 915B403001 please click above link, put TV model number (
WD-60C9) in search box and hit enter to get lamp price info.
Please buy original replacement lamp that lasts longer and avoid low price lamp available all over internet that wont give longer service.
I trust my input will help you out. Please feel free to respond if you have any additional questions.