11 yr old range/oven ; oven stopped working (clock is out and everything) : stove top is fine. Major expense ro fix ? Am I better off getting new one ?

Probably a problem with the door latch safety system. This happens every so often with our microwave, which is over 25 years old, and otherwise works perfectly.
If yours is new, it may still be under warranty. If not, there are places that specialize in fixing microwave ovens.
If it is an older, or less expensive oven, it might be time for a new one.

Is this an over the stove type unit? I have had a few problems with my over the range spacesaver. I think the heat from cooking gets up into the microwave and damages it. The steam from me boiling things on the stove had mine quit heating and I purchased a new one. The parts to replace the faulty ones can be quite expensive over $150.00, so its better to purchase a new microwave.

The life span of the range depends on it's use or abuse.... Common issues are burners and the connections that the burner plugs into. These are not hard to change out.... There is nothing that can make the stove useless, if you keep after it. Newer units do a better job of retaining the heat within the unit, oven wise....Which is nice.

A gas range is certainly nicer, so they say. It is faster, but has one odd issue: if you boil water over, you can put out the flame and have raw gas running in. Most work this way, expensive units have thermal sensors that would turn off the gas flow in flame out condition....

My wife loves her gas range....

i think we need to replace your breaker,some is corroded due to old one,or the breaker is in high ampere or overload,call the electrician to check all your wiring in your house to make sure.for your safety.

1. Disconnect power to stove
2. Gain access to the back of the clock (electronic range control or ERC).
3. Unplug the touch pad ribbon connector from the ERC. This will be a flat wire approx. 1 1/2" to 2" wide.
4. Make sure everything is clear and will not short out when power is turned back on.
5. Turn power back on to stove.
6. Watch for the F1 and listen for the beep.
7. If you get the F1 and beep, replace the ERC.
8. If after approx. 30 minutes you do NOT get the F1 and hear the beep, replace the touch pad.

I've just fixed a very similar problem with a 10-yr-old NEC microwave oven.

Disconnect AC power, take the top cover off, go through the unit and tighten all screws, particularly those connecting ground wires to the chassis and those fixing major components like the power transformer and magnetron to the chassis.

if everything works except the heating, it is most likely the mag tube is on its way out.........that is the most common reason for it not too cook.......since the microwave is a GE and it is 3.5 years old, i would say you are better off buying a new microwave, the mag tube starts at around $70.00 and up + the labor it costs too have a service person put it in........around another $60.00

chances are your magnatron quit on you and you may be better off getting a new one.

We have a stove with no downdraft, and a microwave with a hood above it. It works just fine. I expect you could keep your downdraft and put a microwave without a hood above it, and that would also work. I don't think, however, you can buy an above the range mocrowave oven, that slides in on brackets, which will not have a hood.