(Topic ID: 100711)

Need help/advice replacing components on a DE flipper board

By jibmums

6 years ago

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  • 5 posts
  • 4 Pinsiders participating
  • Latest reply 6 years ago by terryb
  • Topic is favorited by 1 Pinsider


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#1 6 years ago

I've never done board work before, so this will be my first attempt; please excuse the noobish questions. Below are photos of my DE Simpsons 520-5033-00 flipper board. There are two issues that need addressing:

1. You can see in the pics that the fuse clips have some degree of corrosion on them. Will these still work well enough if I hit them up with a Dremel wire brush, or should I solder new ones in? I don't want to take any chances on frying my coils. I need to replace a couple anyway, as there are some joints under the board that are cold, and on a couple the solder is missing altogether. Whatever the case, are these the correct clips for replacement - http://www.marcospecialties.com/pinball-parts/FHPCB ? My mounting holes are a hair less than 5/16" apart, and my fuses are 1 1/4" long, so I am guessing so.

2. The connector pins in the photos are also a bit dull, I don't know if this is due to corrosion or wear/age. Should these be replaced now, or should I just wait until the machine is reassembled and see if the board works with them as-is? Now here's the thing, I don't know a .156" pin from a Molex from any other type of connector, so please help me out with what parts to order here; I'd like to replace both sides (male/female) of the connectors at the same time.

Thanks for the help guys.


#2 6 years ago

Clean the fuse clips. Don't clean the pins the connector goes onto. You'll strip the plating off of them.

Practice soldering on an old board first.

LTG : )™

#3 6 years ago

I agree with LTG. The more legs you have to remove at once, the more difficult it is to desolder. I don't want yo discourage you from learning board repair, just work your way up on junk boards first.

#4 6 years ago

Was planning on lots of practice first. Main thing was, I'm going to be ordering parts from a few places this week, so if I needed them, I wanted to make sure of what parts I would need for these jobs and add them into the order.

#5 6 years ago

Spray the header pins with DeOxit contact cleaner (spray it on and then install and remove the connector a few times) and that should do it. Try the DeOxit on the fuse holders, but the brackets may need additional abrasive cleaning.

A bigger issue is you've got some cold solder joints on the back of the board. In the third photo there are four joints on the bottom left. See the circular crack around the joint, that's a problem. They may be ok for now, but they won't last much longer. Check the rest of the board for the same issue.

Clean the joints with a fiberglass brush, add a little flux and then reflow the connections by adding a small amount of solder.

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