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Pulling my hair out over this Pin!

  • Thread starter Thread starter Luka
  • Start date Start date
L

Luka

Some of you folks may have seen that I made a thread a few weeks ago about a Lethal Weapon 3 table that is giving me and my mate a headache trying to sort (http://www.pinballinfo.com/community/threads/lethal-weapon-3-tripping-mains-power-off.18206/).

Here are a load of photo's of when we opened her up and before we went out and spent £250+ for a new CPU board which seemed to work and play (with no sound) but is now tripping out the buildings power again and not playing, it shows some lights but you can't start the game and after a short time it will trip out.

https://imgur.com/a/z0YzI

I have no idea what to check next and it feels like we have hit a brick wall, so far we have checked:

• Line filter looked clean and tidy
• Looked at the vairistor and it doesn't look burnt
• Reseated any cables that looked like they could be a problem
• Tried the table on a different plug and mains socket completely
• Installed a new Rottendog Amusements MPU & Driver Board (MPU004 Data East/Sega)

When looking inside everything seemed tidy and clean, no damp or creatures living inside. I am stumped could anyone offer any advice or guidance pretty please? We are so gutted because we paid rather alot for this pin and it only lasted about a few weeks before breaking down.

I hope someone can help :)
 
A thermistor (also called an NTC) helps reduce power surges at start up. It goes on the live side in the power box, after the fuse and before the line filter. I have just had this problem. I solved it by installing a new fuse holder (mine had a bad connection) and a thermistor. I also replaced the on/off switch while I was there as that was flakey too. Might seem like overkill, but modern electrics in houses are super sensitive and SWMBO was getting tired of being plunged into darkness every night :D
 
Thank you Eddie, when we opened up the lethal weapon all it seemed to have was a female plug input at the back and then the cables went to the box at the front which had a fuse and that line filter inside it then onto the transformer. If I get some photos up would you mind pointing out the same bits that you replaced pretty please buddy?
 
Thank you VERY much Eddie for your advice and that link above. We have managed to get it to work :) we moved the unit from one plug socket which was on a old ring main from when the building was made , over to a new socket on a newly installed socket and ring main also it's on a medium length extension cable. So far it has worked fine also we have been turning it on from the killswitch from the bottom instead of it just being on at the killswitch all the time and turning it straight on from the socket (if that makes sense). One thing we can be sure of is the old MPU is definitely dead which is a shame but the replacement is working well.

On a different note because I haven't played that many pinballs in my lifetime so far, after you lose all three balls and it does that random number thing where you get a free credit if you get the matching number (I don't know if it has a name). If you get a matching number the machine fires up again and plays the music etc but it makes a loud bang inside as if the solenoid for the gun noise gets triggered and it don't half make you jump... is that normal? I'm guessing in a noisy arcade it will get your attention if you start to walk away or is that a fault which we can live with?
 
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