No solenoids on PF working- Lost world

[morgo]

OK
TP5 has 42.7v
J1 pin 6 =zero
J2 pin 2 = 42.5v
J3 pin 13 = 42.5 v
these other 2 pins are on the same line so its probably the J1 pin 6 that is issue.
noted some burn marks on plug to J1 but only pin 1 , pin 8

[morgo]

looked at back of power board
see pics  
pin6 seems to go nowhere -is something burnt off ?

[Toads]

Is there a wire in the plug of J1 P6 ?

[morgo]

yep - brown wire as you mentioned earlier.
looking at back of board I don't know how it was getting power previously - unless a bridge wire of some sort has broken off but nothing was around. other parts of the 43v circuit can be traced and tested ok for continuity, but not this pin.
the rest of the board has lots of repairs.
thinking about getting it refurbed.

[morgo]

Victory
resoldered pad at back of pin - back in business
longer term I will look at refurb of board-a lot of bit repairs over the years - bit ugly.

thank you to all that gave advice to get me back on the road.

next problem is a pop  bumper that self activates - but not all the time.  - what should I be looking for here?

[Freiherr]

Contacts too close on the pop bumper. Check under playfield and adjust gap. Sounds like vibration is causing contacts to join and randomly activate the pop bumper.

[Strangeways]

Contacts too close on the pop bumper. Check under playfield and adjust gap. Sounds like vibration is causing contacts to join and randomly activate the pop bumper.

+1

Easy test is to thump the playfield with your fist in the vicinity. Most likely the vibration from an adjacent pop bumper.

could also be the switch matrix capacitor across the switch causing the pop bumper to activate. Easy test is to snip one side of the switch capacitor (mounted on the switch). If the problem goes away - it is a faulty capacitor.

[pinball god]

Contacts too close on the pop bumper. Check under playfield and adjust gap. Sounds like vibration is causing contacts to join and randomly activate the pop bumper.

+1

Easy test is to thump the playfield with your fist in the vicinity. Most likely the vibration from an adjacent pop bumper.

could also be the switch matrix capacitor across the switch causing the pop bumper to activate. Easy test is to snip one side of the switch capacitor (mounted on the switch). If the problem goes away - it is a faulty capacitor.

+1 to all of the above

Great news you found the solution to your initial problem

[morgo]

pretty sure its dud caps. these were already cut one side and I resoldered them earlier .previous owner must have had problems.
can these caps be bought at jaycar ? or should I buy specific pinball spares, say from RTBB.

[pinball god]

Can get at jaycar

[morgo]

good-o
fast becoming my favourite store