Archived from groups: rec.games.pinball (More info?)
I'm going crazy here.
My rollergames magnet will not always catch the ball. (When it's
supposed to, that is.) It will MOST of the time (say, 9 times out of
10), but I don't remember this EVER failing on location. What happens is
the VUK shoots the ball over, and on that 10th time, it will slow the
ball down but NOT be strong enough to catch it.
I'm stumped! I've been half-assed chasing this problem since I've gotten
the machine, but at this point I'm annoyed that I can't figure out WTF is
wrong. Here's the list of everything I've done:
* Rebuilt connectors on under playfield transistor board. Replaced IDC
w/ trifuricon (not necessary, but had them on hand). Replaced header
pins also.
* Replaced TIP36C on under playfield board.
* Rebuilt interconnect board solenoid connectors and pins in similar
manner. Then I realized the magnet is a special solenoid and doesn't GO
through the interconnect board. Duuuhhhh... Oh well, I had GI problems
that needed fixing as well, so pulling the board wasn't an entire loss.
* Rebuilt special solenoid connector and replaced header pins.
* Reground the magnet core so that it was back to its original "golf
tee" shape.
* Replaced magnet coil and core with another. (Thanks JWJ!)
* Socket/replace all 4N25 opto couplers
* Replaced driver transistor (used a tip102... sue me!)
* Replaced PRE-driver (2n4401, or 2n4403... I forget whichh one it is.
The NPN pre-drive transistor. THAT one. )
And now, I'm just _out_ of ideas. It'll work nine times out of ten, and
on the tenth time it'll try like heck to catch that ball, but it just
doesn't have the _gusto_ to grab it and hold it. And what's weird is
that on the other 9 times (and on the 11th try), the ball sticks to that
magnet like GLUE!
Any ideas? Things to check? Hell, at this point, are there any links in
the chain that I _haven't_ replaced!??
Thanks, as always!
I'm going crazy here.
My rollergames magnet will not always catch the ball. (When it's
supposed to, that is.) It will MOST of the time (say, 9 times out of
10), but I don't remember this EVER failing on location. What happens is
the VUK shoots the ball over, and on that 10th time, it will slow the
ball down but NOT be strong enough to catch it.
I'm stumped! I've been half-assed chasing this problem since I've gotten
the machine, but at this point I'm annoyed that I can't figure out WTF is
wrong. Here's the list of everything I've done:
* Rebuilt connectors on under playfield transistor board. Replaced IDC
w/ trifuricon (not necessary, but had them on hand). Replaced header
pins also.
* Replaced TIP36C on under playfield board.
* Rebuilt interconnect board solenoid connectors and pins in similar
manner. Then I realized the magnet is a special solenoid and doesn't GO
through the interconnect board. Duuuhhhh... Oh well, I had GI problems
that needed fixing as well, so pulling the board wasn't an entire loss.
* Rebuilt special solenoid connector and replaced header pins.
* Reground the magnet core so that it was back to its original "golf
tee" shape.
* Replaced magnet coil and core with another. (Thanks JWJ!)
* Socket/replace all 4N25 opto couplers
* Replaced driver transistor (used a tip102... sue me!)
* Replaced PRE-driver (2n4401, or 2n4403... I forget whichh one it is.
The NPN pre-drive transistor. THAT one.
)And now, I'm just _out_ of ideas. It'll work nine times out of ten, and
on the tenth time it'll try like heck to catch that ball, but it just
doesn't have the _gusto_ to grab it and hold it. And what's weird is
that on the other 9 times (and on the 11th try), the ball sticks to that
magnet like GLUE!
Any ideas? Things to check? Hell, at this point, are there any links in
the chain that I _haven't_ replaced!??
Thanks, as always!
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