Beware of "got it going" boards

[beaky]

the unnamed person (who is not a sponsor of this site) has got this board going so the machine could be sold, now only a few months later the board has died and will need all the previous repair work removed and then done properly.

If you don't get rid of the corrosion properly it WILL come back worse than what it was in the first place.

I will show you how it should look, stay tuned  


EDIT
I have removed the photos as it is not right to knock other peoples work.

[Homepin]

at least they fitted IC sockets - 

[Mr Pinbologist]

Hmmm.. not  a pretty sight  

I pulled a set of those eclipse brand batteries out of a Data East LAH just yesterday.. im now wondering if the same repairer did the board work on it as who did this one  

I've come across a couple of games recently that someone has used this style battery holder and just soldered them in and left them hanging by the wires  

[robm]

Good to see you weaving your magic on this one Andrew - its from a guy i am helping out here in Townsville.  He also bought another machine where the seller had snipped off the D2 blocking diode (and jumpered it!) so the batteries were going flat all the time....

[millsy]

Looks like my woeful soldering  - Only joking.-not me. 
PS Havent forgotten about sending that old  MPU board, Andrew - you will get it eventually.

[Strangeways]

Andrew - I'm seeing exactly what you describe. The "corner's cut" are increasingly of a poor standard. I recall one "service department" using Soldering Irons that were better suited to Car battery terminals ! I'm glad you are bringing this to our attention as I have my own "Rogue Gallery" of attempted repairs which have caused MORE problems than the original !

I'm keen to see the boards after you have weaved your magic. I believe this is the standard pinball enthusiasts should be expecting.

[beaky]

thanks for the kind words guys.

it's a sad story strangeways, many people have told me with sincerity how wonderful some of these repairs are and they have done repairs on their boards, i then look at the repairs and  all i see is a butcher job.

[johnwartjr]

That's awful....

[beaky]

here are photos of the board with all the damaged parts removed, I had one trace break on me but i am sure there will be several more i will wave to add jumpers for.

you will be surprised how many times there is corrosion under the headers as you can see

[beaky]

I've come across a couple of games recently that someone has used this style battery holder and just soldered them in and left them hanging by the wires  

The remote battery pack is a good idea but it must be done in a way that it can't short on anything.
I had an instance were a person transported a machine with one of the open style battery packs and when the back box was put up the battery pack hooked on one of the transistors in the display driver HV section. he didn't open the back box before turning it on and     every board required repairs after that.

I have started using the Button style batteries but the only worry i have with that is that the customer has to carry AA batteries and lithium button batteries if they have multiple machines and i am not sure on how long the Button style batteries will last. I know GTB use them in their system 3 CPU boards but they are a larger style cell.
I have a system 11 and 6 wms machines with them fitted and will see how long they last as a test.

[ajlaird]

I have started using the Button style batteries but the only worry i have with that is that the customer has to carry AA batteries and lithium button batteries if they have multiple machines and i am not sure on how long the Button style batteries will last. I know GTB use them in their system 3 CPU boards but they are a larger style cell.
I have a system 11 and 6 wms machines with them fitted and will see how long they last as a test.

From my experience in the computer industry with BIOS batteries (lithium button) I would be surprised if you didn't get a good 7 to 10 years out of them.

[beaky]

I have started using the Button style batteries but the only worry i have with that is that the customer has to carry AA batteries and lithium button batteries if they have multiple machines and i am not sure on how long the Button style batteries will last. I know GTB use them in their system 3 CPU boards but they are a larger style cell.
I have a system 11 and 6 wms machines with them fitted and will see how long they last as a test.

From my experience in the computer industry with BIOS batteries (lithium button) I would be surprised if you didn't get a good 7 to 10 years out of them.

Thanks, but i recently had to replace one that wasn't that old in a pimped / restored scared stiff. But I don't know if the cpu board was removed and the battery was shorted because the board was not stored correctly while the rest of the machine was pimped out.

[beaky]

next the corrosion is removed, all the solder throughs have the solder removed, all holes are cleaned with a drill bit to remove any corrosion that may have worked its way into the solder throughs.
the board is cleaned and the top is clear lacquered before any components are fitted.
the reason for this is so there is no bare exposed copper under any I.C.s or other components.
  

[goodolddays]

Wow .. doesn't look like the same board !

[beaky]

and when it's all done it looks like this.

i have had to add several jumpers on the back and as always i secure them with epoxy