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Nightmare on elm street
- Thread starter mrsyfy
- Start date
First question... have you done any earthing mods?
If not then apply earthing mods then report back.
www.pinwiki.com
If not then apply earthing mods then report back.
Gottlieb System 3 - PinWiki
no, I have not done any earthing mods thanks for the info. But it just seem kind of odd that was the only coil blowing fuses.
I will be working on those mods tonight. I thought it might of been a smart switch problem. But a bad ground could do it too.
Thanks again, I will let you know how it goes.
I will be working on those mods tonight. I thought it might of been a smart switch problem. But a bad ground could do it too.
Thanks again, I will let you know how it goes.
Is the coil the correct way round polarity wise?
its a brand new coil a 19300, this is what is call out by the manual for it. I also wired it up according to the manual. its also the same coil that the kick save uses. They are both installed the same way when I looked at the original. But should the claw save coil be turned around the opposite way? so its pulling the plunger instead of pushing.
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I didn't think that coils have a polarity, they magnetise and the effected plunger moves. Also, if it had polarity, this wouldn't cook the fuse very quickly.
It sounds like you know what you are doing as you stated board repair, but have you first off pulled the play field connector for this coil, then run a coil test and seen if the fuse pops? This will indicate if the issue is on board or on play field.
It sounds like you know what you are doing as you stated board repair, but have you first off pulled the play field connector for this coil, then run a coil test and seen if the fuse pops? This will indicate if the issue is on board or on play field.
Earthing issues with this machine??
I remember playing this game in a local pub and if you touched front lockdown and the radiator besides the machine you got an electronic tingle....
I remember playing this game in a local pub and if you touched front lockdown and the radiator besides the machine you got an electronic tingle....
You have to replace both the coil and drive transistor at the same time before powering up, otherwise one will blow the other in a continuous cycle.
It is also worth checking if there is another coil in the same circuit as sometimes gottliebs have two driven by the same drive transistor.
It is also worth checking if there is another coil in the same circuit as sometimes gottliebs have two driven by the same drive transistor.
did find out the coil was on back words, it was pushing instead of pulling. Now just waiting on drive transistors to come in.
If the coil has a diode, that makes a difference @mrsyfy - but it doesn't have a polarity. They always pull.
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What happens if you solder a coil backwards? | Tech: DMD era games | Pinside.com
| Forum Topic by mot
pinside.com
As you seen from the video, reversing the drection of the coil rod changes which way it will travel through the coil. This is what I was talking about. When I reversed the direction of my coil the claw now works as it should with on problems.
