Sky Jump target #7 issue (help pls)

Would appreciate help thanks
as I've gone as far as I can at this point.

OK, so here are the clues:

Clue 1. The #7 drop target does not work (no sounds and no score for regardless of what lights are lit). I have checked that switch works.
Clue 2. The corresponding spot target to drop #7 does not work at all (no sound so score). I have checked that switch works.

So looking at schematic, these two are related and you can see directly next to each other (I verified wire colors).

Clue 3: targets 1-6 and corresponding related spots 1-6 all work in all circumstances. For me this rules out it being an issue with relays B or C (50 or 500pt relays).

Clue 4: occasionally, when red light is on #7 drop target spot and I drop target 6, it will erroneously score 5000 as though the red light was on 6. This leads me to believe that it has something to do with the multiplayer control unit.

However, looking at the schematic, I really can't see why the #7 spot target wouldn't work because it doesn't seem to need the multiplayer control unit to work.

Anyway confused newb trying to get past this

Any ideas?

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#2 6 years ago

POC

Noobee

Pinside member

10y 58,400 421 4

I would focus on the multiplier control unit (second pic you posted). Look at wire colors associated with target 7. May be a loose solder connection or wire.

#3 6 years ago

Darcy

Pinside member

Leduc, AB

11y 124K 6,360 17

On relay 7B is that solder tab for the orange green wire touching any other metal surface?

#4 6 years ago

ARG

spinal

Pinside member

Checked and it looks good - checked connections with meter too after I cleaned contacts.

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#5 6 years ago

???

currieddog

Pinside member

Springfield, MA

7y 63,550 3,312 6

Give the stepper unit in pic #2's rivets and contacts a good cleaning.

#6 6 years ago

WOZ

woz

Pinside member

14y 77,050 1,866

The

OP
Quoted from spinal:
Clue 2. The corresponding spot target to drop #7 does not work at all (no sound so score). I have checked that switch works.

So the yellow standup and drop target do not score. That eliminates the stepper from this part of the problem as that is only used to determine the target score multiplier.

All things point to the 7B switch or the wire from the yellow standup and drop target being the problem. There are three wires on that 7B switch. The Orange and Green wires are commoned to the other switches on the bank and since those work they can be eliminated. That leaves the OR-GR wire (which looks like Yellow - Green in the pic). I would check continuity of that wire from 7B switch back to the standup and drop target.

Please post some pics of the #7 drop target switch and corresponding yellow standup switch.

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#7 6 years ago

P-F

PinballFever

Pinside member

Mesquite, NV

9y 66,050 1,635 3

Following this topic so I can learn how to troubleshoot EM issues using the schematics.

#8 6 years ago

ARG

spinal

Pinside member

Makes sense woz - much appreciated!! I had cleaned and checked 7B as well as the spot target and was confused as to how both the spot and drop wouldn't be working because of multiplier control unit. No loose wires either so had no idea.

So that orange-green wire runs from 7B to the spot and then from spot to drop7. First I checked continuity from drop to spot and it was fine.

Then checked continuity from 7B to spot and... Nothing! Wow, would have never thought wires could break somehow - didn't even think of that.

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So jumpered it and now spot and target7 works!
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Thanks so much for everyone's input - one more problem resolved on my "100% working" pin (or so as it was called when I bought it).

#9 6 years ago

WOZ

woz

Pinside member

14y 77,050 1,866

Glad you found the problem! Would be nice to know where the wire is actually broken then you may be able to fix it without adding non-factory wire.

I would check under the metal bar circled on the pic below.

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#10 6 years ago

HOW

HowardR

Pinside member

Quoted from woz:
Glad you found the problem! Would be nice to know where the wire is actually broken then you may be able to fix it without adding non-factory wire.
I would check under the metal bar circled on the pic below.

You could hook one side of an ohmmeter to the wire's end, and the other side of the ohmmeter to a safety pin. Then poke the wire with the safety pin at various places to narrow down on where the wire is broken.

#11 6 years ago

WOZ

woz

Pinside member

14y 77,050 1,866

Quoted from HowardR:
You could hook one side of an ohmmeter to the wire's end, and the other side of the ohmmeter to a safety pin. Then poke the wire with the safety pin at various places to narrow down on where the wire is broken.

What a great idea...the advantage of cloth covered wire!

#12 6 years ago

HOW

HowardR

Pinside member

Quoted from woz:
What a great idea...the advantage of cloth covered wire!

Thanks for the upvote, woz !

#13 6 years ago

ARG

spinal

Pinside member

Yes that was going to be my next question - how to repair this faulty wire. Great idea about using safety pin - will give a try and report back here.

I'm assuming one cannot buy matching wires right? (don't think PBR had it).

#14 6 years ago

???

currieddog

Pinside member

Springfield, MA

7y 63,550 3,312 6

Do a search. Here's one place, where you apparently have to specify that you do not want the wire lacquered: http://www.narragansettreproductions.com/general-supplies-primary-copper-wire.html

#15 6 years ago

MAO

MikeO

Pinside member

Overland Park, KS

11y 88,400 3,625 41

OP
Quoted from spinal:
Yes that was going to be my next question - how to repair this faulty wire. Great idea about using safety pin - will give a try and report back here.
I'm assuming one cannot buy matching wires right? (don't think PBR had it).

Find someone with a parts game and first see if you can find a strand of the cover you are looking for. Otherwise just use something close.

#16 6 years ago

HOW

HowardR

Pinside member

I've never tried this but you might try a green marker on an orange wire.

#17 6 years ago

ARG

spinal

Pinside member

Great tip HowardR thanks!

I used a pin I found and checked above and below metal bar and there was no continuity below - woz circled the exact spot above (wow! You guys are good!). Verified on other side that this is only break.

So this pin idea is really fantastic - very easy to just touch into wire to find exactly where break is. Two pins have been added to my toolbox!

So after finding break, pulled out wire and definately broken exactly on that spot.

I'll need a bit of wire to connect there - anyone know what guage of wire this is? (I don't have any spare wire so have to buy something)

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#18 6 years ago

HOW

HowardR

Pinside member