Does anyone have experience with the one from pinballdecals.eu? They say in there description that theirs let more light through than other reproductions. But of course anyone can claim that...

But being located in the EU myself, I was thinking about trying it.

https://pinballdecals.eu/shop/twilight-zone-pinball-translite/

Start by checking the 5V supply at the test point, and then at U6. They should be almost identical, and above or very close to 5V

I had the error with the flickering led also on the same board.

Had to take it apart and change all of the LEDs, as the ones I had lying around was a little different color temperature than those already in the board. Actually turned out even better than the original replacement board LEDs, as the color temperature (warm white to go with my original incandescent GI) and spread is near perfect. Makes the clock seem pretty evenly lit, and not as if it is from the 4 corners. So although it was really annoying having to change the led in a pretty new replacement board, at least it turned out alright

This guy have a lot of teardown pictures of various machines. Unfortunately the viewer implemented isn't the best, but perhaps you can use it anyway:

http://www.weirpinball.com/gallery/index.php/Teardown-pics/Williams-Bally-DMDs/Twilight-Zone

Does it fire with full power when it goes up, or only slowly?

I think that perhaps the correct sounds are already in the Pinsound package, but just not being played. I think that originally the 4-5 booms in the end of the jackpot jingle are 2 or more different sounds played at once. And perhaps the Pinsound board and the arcade version only plays one of the sounds.

As far as i can tell, i think that if you mix the 1117896962-jackpot_score_pt_2_ sound from the original TZ Pinsound archive with the boom sound, you would be a lot closer? And ofcourse you would then have to overwrite the existing boom sound with the new mixed/combined sound in the package (correct folder).

So in short i dont think you have to rip anything, but do some fiddling with the existing sounds.

Looks like an awesome lot of work. Very nicely done!!

When you pull out those transistors, have you tested them out of circuit to see if they are actually shorted?

Remember to always check components when you remove them. I get how the transistor would be the logical place to start, and maybe it even measures a little "weird" when in circuit. But i always double check components i remove, as they sometimes turn out to be just fine. And then you know you have to look elsewhere, and can rule out that component.

Would you happen to have a link for those specific screws?

The same goes for Denmark. Everyone will tell you to avoid most of their products. Most of it is poorly made copies of others products. Especially their plastics looks terrible. The colors are all wrong, and the images is blurry and fuzzy.