Picture turns off, but sound stays on, bulb has been replaced recently. Happens 5-10 times a night

Sound like ur tv have two problems.The "lamp"LED light flashes,mean ur tv need a new projection bulb.The loud refrigerator sound,mean the tv colors wheel is dead,it spinning off of it axes motor.Hire a tv repairman to do this the colors wheel is hard change,because require take out many machanicals parts even to get to the colors wheel to change.The bulb is easy replaced,but he there pay him to put new one in.

Remove projector assembly and clean out dust from cooling fans inside of it. It will require some disassembly. Then have capacitors checked on the power supply.

okay the reason that the its turning off could be the fan isnt spining fast enoug hold your hand at the back of the tv to feel where the exhaust air if isnt good enough to help cool off the bulb then the fan may need to be replaced also the balast could be going bad and last check the power supply that feeds the balast make sure its a constant dc voltage

First thing change the lamp. There are several other things but this is most common. Be sure tab on lamp door presses door switch in downward position when you change the lamp. MCM Electronics you can get a philips bulb for $99.00.

Sounds like the bulb burnt out.

Replace the color wheel

The most common failure in the DLP that makes a whining sound would be the color wheel. They cost about $135 + labor because I wouldn't advise changing it by yourself.

Try cleaning or replacing bulb. Dust is the number one cause of overheating projection tv's.

Sounds like a major problem with the main motherboard (digitial board). Bad news and costly

Try replacing the ballast next. Its the small circuit board directly underneath the lamp housing. You can access it through the lamp door. If the ballast is overheating or has a leaking capacitor, the tv won't stay lit for more than a minute or two.