It comes on normal then a minuite latter it goes off on its own and keeps on coming up htc htc htc.

I would remove the power supply and battery wait a minuite then replug everything back in.
Terry

you either have a defective battery or a mainboard fault inside the phone.

Is this a Laptop or Desktop?

Check "wake on..." settings in the system BIOS, likely that "wake on lan" or
"wake on ring" is enabled.

So disable it and your problem is gone !

ISOLATE the Oven from the mains keep powered down for at least a minuite, the power it up again, see after 40 secs the display goes back to normal . If not then you will have to investigate the cause, always ISOLATE THE MAINS BEFORE OPENING, the displays can go faulty.
let me know how you get on
Hope this is helpful
John

Sounds like possibly a faulty ignition switch, They will cause symptoms very similar to that. Another thing 2001-2003s were known for are bad instrument panel clusters (dash assembly) usually the speedo gets pegged at a certain speed and stays there.

does the pressure goes high when the heating on??? or is there any leaks any where inside or outside

Had same problem I think its s defect. I had to jump out the stingl to keep pump running because I was getting a 30 second fluctuations of voltage being passed through the line side of the switch. I had constant 110 v going in but 110 v coming out for 30 seconds then 0 v and back and forth until alarm sounded. My relays and wiring were all good so it has to be the stingl. They were in such a rush to produce them for the new law that they were not tested properly and have had many problems. This is my third stingl for the same operation all having different problems. I'd contact the company for a replacement.

u have a problem with ur thermostat pitch adjustment which u cant fix u just need to replace ur thermostat

if the battery completely died, you have to leave it charging for more than a few minuites. try anywhere from 10 to 30 minuites and it should be charged enough to turn on