🚀 go-pugleaf

I am hoping that one of your hardware guys or gals can help me out with this
one....

I have a former 128K mac that was first upgraded to a 512, then a Plus,
and now has a 2meg board in it.  It boots off a MagNet 30, and had been
running wonderfully well.  I also use a systems saver.

Last week it showed classic power supply failure problems.  I took it
to my local Apple dealer who changed the power supply.  I brought it home
and found that the outer edges of the screen were fuzzy, and it
bombed, then hung itself on mac-terminal.  I took it back. He said he
fixed it (again).  The screen was still fuzzy, and it was still bombing.
He fixed it (again).  This time the screen is only fuzzy in places, it
bombs less (but now on deluxe music construction set) and all of a sudden
last night the screen went nuts, rippling all over the place and making
a weird noise.  I tried to reboot, but got a sad mac.  I left it overnight,
and now it seems to be working fine (I am posting from it).

So, the question is, should I bring it back again?  If so, what do
you think the problem is?

Thanks,
Mikki Barry