Lots of details: LP120 stays on for a minute, then powers off

17 gallons per minute.

https://www.google.com/search?safe=off&rlz=1C1QJDB_enCA643CA644&sxsrf=ALeKk00SM70LyzyOxw5QFIGaxSimB7VSNw%3A1607197589271&ei=lePLX66BELqx5NoPjb6u8As&q=+pump+UP+20-42+specs

..

If you have replaced the cartridge then it must be the cartridge pre-amp that is faulty. If there are any other functions on the device such as CD, then it will not effect them. Unless there is crackling on any other function then the pre-amp has a problem. The pre-amp itself is generally a single IC. You can find it by following the turntable connection back to the inside of the amp. The signals will pass through the IC before being passed to the main pre-amp.

could be the power supply, there was an issue with the power supplies depending on when the date of manufacture was.

it project?..but in 10 sec.it off? im pretty sure that the lamp ballast of your projector is defective. but if deadset? check the power supply and your power cord. if still not working your power supply board is defective.

what is the led doing? what coloris it? and if it is blinking, how many times? this will tell you the problem.

green (flashing and solid)- all is well
red flashing:
1 time- lamp won't strike after 5x
2 times- lamp has over 2000 hrs. replace lamp
3 times- lamp failure. replace lamp
4 times- fan not working.
5 times- projector running too hot. needs cooldown
red led lit solid- undiagnosed issue. send in for repair.

if your projector is under 2 years old, it's under warranty, but it seems unlikely.

the colorwheel is going. time to replace.

colorwheel- 525-0136-01

you can purchase and replace the blower assembly- part # 505-1917-00. it's tricky, but you can do it. find an infocus authorized service center form their web site to buy it.

The security light came on and stayed on during travel time about 20 minutes.

I have had the same problem for years since I bought he car used. When I use the extra set of keys, it does not seem to like them. No problem with regular keys though. Go figure.

overheating or power supply problem.