Window quit working

Toyota Corolla 98 model. 130K mileage.
Both front windows are not working. It started few days ago, when they were working intermittently. While opening, no problem but for closing it took a long time. And then after some days, it was not opening or closing at all.
I had shown it to the mechanic. He tested and said Motor, Regulators are OK, but master switch needs to be replaced. This switch is 320$ worth.
Can this be possible? What is this master switch?
Can there be any possibility for this kind of malfunction?

Thanks.

Thanks for the quick reply.
Yes, both rear windows are working.

Does this master switch cost so much? Will it be ok if I get it from Used parts dealers?

Thanks.

Better check the power fuse 30amp. And the gauge fuse 10amp behind left side of dash at lower finish panel.

This one when it goes out (Power window relay ) nothing is gonna happen its located on the driver side R/B.

It sounds more like the master switch, what about the back 2 windows are they working?[/Quote:2a0dbcb52a]

Both driver side windows dont work

Electric windows stopped working.
Where is the fuse?
Do not have a diagram on the electric windows
where can I obtain circuit diagram.
Hayes manual does not have circuit diagram on electric windows.
Checked all fuses on driver side footwell and engine compartment. All ok
Checked fuses on passenger footwell. All ok

When I rolled my driver's side window down today, there was a thudding noise like it fell into the door. When I tried pushing the button to roll it back up, there was a noise like it was cracked. All of my other automatic windows are working fine. I've read responses about the window regulator, fuses, etc. However, it sounded like my window detached from whatever was holding it up. Ideas? Thanks!