Quick help before I smash something!

[ddstoys]

Williams laser ball fully working new interconnects etc.

  Was ready to go when one row I lamps locked on.   Removed the driver board replaced the faulty transistor and replaced now when u turn it on most of the coils pulse. 

   I need to pack it up I need the space desperately but can't until it's working grrrrrrrr

[Olivia_jason]

best of luck with it mate, i know what its like when the gremlins seem to being winning, 

[ktm450]

Grab a few beers and get back into it tomorrow mate 

[ddstoys]

Cans sound good but not an option tonight things just got worse.....

    Getting a smaller pool table tonight and the guy buying my old one has just pulled out 

[ktm450]

Got a big tarp, I hope it doesn't rain tonight.
Seriously though if you run into problems and need to store something for a little while let me know.

[Retropin]

Williams laser ball fully working new interconnects etc.

  Was ready to go when one row I lamps locked on.   Removed the driver board replaced the faulty transistor and replaced now when u turn it on most of the coils pulse. 

   I need to pack it up I need the space desperately but can't until it's working grrrrrrrr

Ive had a similar problem and am trying for the life of me to remember what it was...

make sure you havent got some solder splash on the coil control IC... somewhere along the line you are allowing a path to ground on the coils. because its more than 1 firing then suspect the controlling IC... this could be faulty or maybe allowing a path to ground via a cap thats close.. hence the pulsing... but chances are that its solder splash... SOMEWHERE

[ddstoys]

Ok guys finally made room to set this big bitch up again to remove the boards.   No visible solder splash flux issues machine still pulses all coils at power on.

After the initial pulse the whole game runs 100%.   Any ideas what's causing the initial pulse???

[The pinballist formally known as Dean Morgan]

Ok guys finally made room to set this big bitch up again to remove the boards.   No visible solder splash flux issues machine still pulses all coils at power on.

After the initial pulse the whole game runs 100%.   Any ideas what's causing the initial pulse???

Grounding or Noise?

[Olivia_jason]

Ok guys finally made room to set this big bitch up again to remove the boards.   No visible solder splash flux issues machine still pulses all coils at power on.

After the initial pulse the whole game runs 100%.   Any ideas what's causing the initial pulse???

look for the little Gremlin hanging off the wires that is laughing at you

[studley67]

i have a laser cue.is it related

[The pinballist formally known as Dean Morgan]

Do u have another CPU board u can swap with? Maybe an Ic on board on it's way out and over sensitive

[ddstoys]

Ill get out the test box tommorrow and see what happens.   

[Retropin]

ALL coils Daniel? Including flippers? Solenoids and CPU controlled solenoids ( special solenoids)...

... maybe we can narrow this down to a row or column?

[beaky]

Maybe a faulty PIA or Faulty Electrolytic Cap on the driver board or power supply or mpu.
Or a faulty diode on the flipper relay.

I have a similar fault on my BK2000 but it's intermittent and I haven't rebuilt any of the boards yet. (yes I know It's a different system)

do all the lamps pulse on start up also?

Maybe when the transistor died it damaged the I.C.or PIA that drives it which is sending funky signals to the data lines.

if you have a spare driver board or one from another machine try swapping it to confirm if the fault is on the driver board or else where.