My guitar won,t play threw the amp lots oof static

Get inside it and check the connections to the plug especially any shielding / braiding. Resolder the connections.

The metal rod inside the neck of the guitar must be bent back into shape. Go to a local music shop (find one online near you) and ask them to repair it for you.

Clean the contacts on the input jack and battery jack.

How new is the amp?

A single faulty solder can do that...I'd try returning in to the seller.
Have you tried a different amp with the same equipment?

Sounds like a wiring issue.

Hope I've helped
PvT

Yes, however the acoustic will be MORE sensitive to feedback so don't let the guitar "hear" the amp.

First verify that OTHER guitars work flawlessly with the same cable and amp.

This is the season of low humidity and static discharges. These are usually reduced by raising humidity to 40% or greater.

Static develops from certain clothing and shoes rubbing and can discharge through the guitar cable as it builds up. If you can shuffle your feet and cause more static, then get some "Staticide" spray to spray on the floor where you perform.

I would NOT modify your guitar due to the value of it unless you find a broken ground wire someplace.

You are driving the amp too hard and the thermal protection in the amp chip is cutting out.

Either reduce the volume on this small amp or get a larger unit.

The heat sinks for the amp chip will overheat if you drive it hard and that takes a bit of time to happen, hence the 30 minute delay.

I want you to do a test. while using the amp plug a pair of headphones into the preamp out... note you will only hear stuff on one side if they are stereo phones and the sound may be fairly weak... while the unit is operating correctely then unplug phones and use it. When it fades out plug in phones compare the level when it was OK... If the preamp output fades lower as well, then we know problem is in the preamp section...

We can do a lot of troubleshooting without opening the amp.

I see nothing in the scheamtics that should be an issue causing this...

Since it didn't fail for the tech, think "what was different?". Are you connecting something else? Foot pedal? Temperature? :Loudness of playing?

Now what else is in common to these two units... AHA! The guitar...

If your guitar has a battery in it, the 20 to 30 minutes fading would correspond to a battery failing and then recovering after you unplug the guitar for a while.

The hissing is caused by a bad connection, most likely at the cable jack. Try replacing it and while you're doing that check the rest of the components - especially the potentiometers, used ones generate a lot of static.