Here’s my beautiful Jurassic Park.
I haven’t been a DE fan, but I always have liked their flippers.
But this Jurassic Park is a genuinely great game. But it feels like it has software issues sometimes, doesn’t really do what’s expected but can also be switches but I have checked them all and they are good.
Either way I have an issue I haven’t solved.
The flippers are great and strong. I’ve cleaned them and fixed EOS switch etc. They feel strong.
But the hold current just isn’t enough. Sometimes when the ball comes down and hits a flipper that up, it knocks down the flipper which in turn releases EOS switch and knocks the flipper back up.
Uncontrolled flipper movement in order words.
This is on both left and right flippers.
Are these flippers simply like this? That the holding force just isn’t enough?
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Thanks all.

I am starting to suspect I have power issues.
Just a theory.
My wife noticed today that sometimes the flippers become sluggish and can’t even shoot a ball properly. Same with the plunger that cannot even get the ball out on the playfield - sometimes.
Also noticed absolutely zero flipper action on both left and right at the same time and also long delays from button push until flipper activates.
I need to try it myself but I am starting to suspect power issues here… But it feels like something else should go before this occurs but I haven’t dealt with power boards at all before so I don’t know what I’m talking about.

Does my hypothesis make any sense or am I completely lost in the wild?

I’ve rebuilt the flippers, plungers and all other coils twice in the pursuit of weak flippers and plungers. Found no issues the second time.

This game has given me loads of trouble.
So far I have this:

Plunger didn’t work properly because previous owner had put on a rubber tip that got stuck in the broken coil sleeve and screwed it all up. Took me two tries to see that.
Fixed and works perfect now.

Flipper: Bad EOS switch. I’ve cleaned the EOS switch many times with 800 grit to no avail.
I’ve measured it out and it has SOMETIMES a closed circuit and sometimes just doesn’t.
No matter how much I clean it up it doesn’t get fixed.
New switch needed.

Also had other various troubles like 3rd flipper spring came loose and so on. Small troubles everywhere on a level I have never experienced in a pinball.
But I’m certain that once I’ve gotten all fixed it’s a great machine.

Damnit, I’m used to old EM machines with just copper.