coinco s75-9800b question

[scalebowler]

Anyone know how hard it is to replace the fuse on the logic board on a coinco s75-9800B?

[johnieG]

you have to clean the copper runs (foil traces) & solder a piece of 18 gauge(awg) solid wire across were the "fuse" trace used to be..( usually marked by a large black & silver flash spot where the original vaporized due the short it suffered...   Also be aware that it blew for a reason & if the cause isn't repaired, then it will blow again

[scalebowler]

The fuse blowing was actually my fault. Thanks for letting me know how to fix it.

[scalebowler]

I got the logic board out and will work on it soon but I do have one sort of unrelated question. What is the little plastic thing on the logic board with the little metal ball in it for? Just saw it and was curious.

[johnieG]

It's a "Tilt" switch, ( Just like on a pinball machine, only a mini version) used to disable the coinmech in case someone got the brilliant idea to shake/slam the machine to force the coinmechs coin-switches to register a credit. if you wish, you may remove the plastic cage & take out the little ball-bearing, then grab the remaining metal tangs with a pair of needle-nose pliers & snap them off the board by rocking the tangs back&forth until they snap off ( they aren't needed for home use anyway)

& if the tilt switch is triggered ( or shorted momentarily) it will kill the coinmechs logic chip ( it will reject all coins) until the machine is unplugged & then plugged back in ( or the coinmech) to reset the logic board.  it used to be a nice little (dirty) trick for an unscrupulous vending tech to "bump" the machines on his route late at night to trigger the "tilt" switch & then get a nice round of service calls in the morning to come & "fix" the machines! ( easy money when business is slow if you had no honor)

[scalebowler]

I think I might leave it on this mech since the machine I am working on is actually in service in an ice cream shop and since I can't see the machine from the front counter I don't want the customers to get anything out for free but that is really interesting. Never knew that they had so much stuff in these old machines. It is pretty cool.