No power to unit. All functions dead.

Ensure the power plug is properly installed not lose. That is a serious legacy (Super Very Old) machine. Unplug machine and remove rear covers. Look for fuse or circuit breaker. loose connections. if notice nothing plug in and using a volt meter test for voltages on any red wires connection. Black and white wires are 120 VAC be care full green ground

unplug from any power source. leave unplug for 15 minutes some capacitors keep power for a while so leave it unplug for a while. then turn back on. see what happens.

What you need to check is for power at the clock.TURN OFF BREAKER gain access to clock and use volt meter. One the clock will be wires maked L1 & N on those 2 wires when breaker is turned back on their should be 120 vac. IF 120 vac at those 2 wires,replace the clock, if not 120 vac into clock check for burnt/broken wires

Hi Karen, and yes more then likely a lot of the controls were cooked. It doesn't take long with that high of voltage to take out motors, burn the insulation off of wiring and so on. Depending on how long it was plugged in and how long that much voltage had run through it, try plugging it into a 120 volt receptacle and see what happens. I would do this before any thing else. I have seen this happen on other units and just melt the 120 volt power cord. So, plug it in to see what happens, and if it seems to run good, you may have turned it off in time. If nothing happens, and this unit cost you a lot off $$$, it may not hurt to take it in to a appliance repair shop and get an estimate. If you smelled a lot of electrical burning, I would look at where the power cord comes and ties in, that may be as far as it got and check it if you have someone that is able to do this. But, my guess it is probably dead. I am sorry this happened to you. Please don't forget to rate my post as I know you will be kind.
Sincerely,
Shastalaker7
A/C, Heating Contractor

all atx powersupplies are generic-it dous not really matter what computer it comes from unless its a high end pc requiring loads of power-if your machine is intel you may need a supply with an extra twelve volt lead(two yellow and two black leads in a little block)-but for that pc i would just harvest a powerpack out of a dead machine

Check for a fuse either in-line or on the circuit board. There should be 24 volts going to the thermostat. If not, you have either a bad transformer or a bad thermostat wire. Jump out the terminals that the thermostat wires are connected to. This should force the unit to fire. If not, bad circuit board.

Might your switch be non-functioning? Can you check that independently?

Otherwise, sounds to me like you did eveything.

Same thing happened to me with my dog once. I let him out and that was it! :-)

sounds like a short in the cpu of the unit

Are you certain the polarity of the connections to the TV are correct? If you connected them in reverse you may have damaged the TV. If there's a fuse in line check that too. BMW