Fuse help?

[Marty Machine]

That's weird, not sure how a bumper switch would be attached anywhere onto the GI circuit to blow it's fuse...something dodgy.

Glad it's solved anyway 

MM.

[Peach]

With my very limited knowledge I have no idea either,but maybe there was a dodgy bulb,I did have every one of them out before I found the contact,so could have fixed it without even knowing.
 

[Strangeways]

After a day of taking bulbs  out and putting them back in and a dozen blown fuses . I found the problem to be a contact stuck on one of the bumpers  ,what a pain,anyway I just wanted to say thanks to everyone who offered advice. 
Cheers Peach 

That's bizarre !

If the bumper switch was closed - then that bumper coil would "pull in", not blow your 15 Amp GI fuse !

That's funny 

Anyway - Glad it is resolved. sometimes you can accidentally shorten a GI lamp socket to ground or something else. Simply by removing the globes and re installing them - you would have fixed the issue.


 

[Retropin]

yes - bizarre, but arent you glad you dont have to unsolder all those lamps now to find the fault??

Is it possible that the stuck switch on the bumpers was touching the lamp holder legs??
 This is the only way i can see the switch affecting the lamp circuit

[Peach]

It would seem that I opened my mouth too soon,just turned it on and played for about minute and a half before the fuse blew again,but at least now it doesn`t blow straight away  .

[Retropin]

So we have an intermittent fault??

Did you check at the bumper switch again??

[Peach]

I did,it`s ok,but don`t know if it was a coincidence that the fuse blew when I pushed the start button.It went out during play so I replaced the fuse and pushed start and blew again.
 

[Retropin]

mmmmmm. well you have a dead short somewhere.

Try this trick - lift the PF up and turn game on while keeping your eyes at the underside of the PF. When the fuse blows do you see a blue flash anywhere?? ( best done in the dark if poss)

[Peach]

Tried it and saw a blue flash,took out the bulb near it but the fuse blew anyway,it was to the right of the swinging target on the bumper at the side of the playfield.
Cheers Peach 

[Retropin]

Peach - just take the power line off this socket. keep the 2 wires together ( if there are 2) and insulate with some tape.

Ive got your manual and flyer here to send to you - will add a socket also in case you dont have any

[Marty Machine]

Hmmm, the plot thickens..... time to buy another big bag of fuses and keep tracking where the flash/arching is occuring....
Best of luck.

MM.

[Peach]

Probably shouldn`t open my big mouth to soon but it seems to be ok at the moment,just played a couple of games and no problems at all,  .
Cheers Peach 

[Retropin]

Peach, when you saw the blue flash where the short is - it was near the bumper??

Check the wire looms here for bare wires/ worn insulation. often with this sort of short, lifting the PF can move the loom and therefore move the short. it hasnt fixed the problem

[Peach]

Thanks Gavin,Will do,just thought I should leave it alone for a bit before I get the shits with it 
Cheers Peach 

[Peach]

I have had another look and found a little bit of wire that was bare near where I saw the flash,so I have taped it up ,so far the fuse has not blown,the bit that was bare was very small,could this have been the problem ?? 
Cheers Peach