My GE wall oven's clock is running fast after I had hooked up a generator to house. Will this settle out or did power from generator whack clock out of alignment?

one of the controls overheating

Advise manufacturer; may give you a warranty on this part even after it has expired because of nature of the problem.

I assume the display for the clock/timer is now blank. If the oven is still working the only thing you are missing is the clock. If you can't do without it you will need a new clock.
Most of the time the clock/timer stops working it affects the operation of the oven, the oven won't work. If this is the case you will need a new timer unless you can do without the clock/timer. If so a repairman should be able to bypass the clock with ease so that the oven will operate without the clock/timer.

When you say board I assume you mean the electronic clock/timer. This timer directly affects the oven operation. Even if the internal oven fuse is blown or the thermal overload is tripped the electronic timer and oven light will always work. If the oven light works and the electronic timer/clock does not I'd say that the timer/clock is faulty.

remove top cover and check fuse in board area.

check elements. if good replace the main clock board

I don't see that exact model number listed. Check the model / serial number again. If the unit is not too old, you can probably get a replacement key panel which should solve your problem.

This model has issues with the power input controller board, usually caused by surge following a power failure... board is $285 from GE plus $90 or so to install after paying a $100 service call. Replacment part is special ordered and generally takes a week or so.... have 2 of these ovens... ask me how I know.... LOL

THE ONLY SOLUTION FOR THE BAD DISPLAY IS TO REPLACE THE CLOCK. I HAVE A JENN AIR OVEN TODAY AS A WORK ORDER TO REPLACE THE CLOCK FOR A FAILED DISPLAY.

FOR THE JGW8130DDB WITH NO POWER ANYWHERE, IT SOUNDS LIKE YOU HAVE A SUPPLY PROBLEM. MAKE SURE THE WIRING IS HOOKED UP WITH THE RED AND WHITE WIRES RECEIVING 240 VOLTS AND THE WHITE WIRE ATTACHED TO NEUTRAL / GROUND.IF THE OVEN HAS A BARE COPPER WIRE AND THE HOUSEHOLD WIRING ONLY HAS THREE WIRES, COMBINE THE WHITE WIRE AND THE COPPER WIRE TOGETHER AND ATTACH TO THE HOUSEHOLD NEUTRAL / GROUND .
UNLESS YOU ARE SURE ABOUT THE HOOKUP IN THE BREAKER/FUSE BOX, DO NOT GO SIMPLY BY THE COLOR OF THE WIRES.