Search found 810 matches

by tinyrodent
Mon Jul 06, 2020 7:43 pm
Forum: Projects
Topic: Shop Log: 1981 Bally Fathom
Replies: 38
Views: 986

Re: Shop Log: 1981 Bally Fathom

Parts all polished.
sling parts polished.jpg
Assemblies rebuilt.
slings rebuilt.jpg
by tinyrodent
Mon Jul 06, 2020 4:37 pm
Forum: Projects
Topic: Shop Log: 1981 Bally Fathom
Replies: 38
Views: 986

Re: Shop Log: 1981 Bally Fathom

Slingshot assemblies broken down. Dirty, corroded, rough. dirty slingshot parts.jpg Might as well add the saucer kickout assemblies and give them an ultrasonic bath. basket of dirty parts.jpg Five minutes later, the bath water is blackened and the parts are mostly clean. Still a lot of polishing to ...
by tinyrodent
Sat Jul 04, 2020 1:00 pm
Forum: Projects
Topic: Shop Log: 1980 Bally Skateball
Replies: 98
Views: 3157

Re: Shop Log: 1980 Bally Skateball

Berry containers and foam window shield! That's putting these things to great use!! Thank you for a great job documenting and the step by step of your findings throughout your restoration work. Taking notes and tons of pictures is some great advice! That pin is saved and will be enjoyed for many, m...
by tinyrodent
Sat Jul 04, 2020 11:17 am
Forum: Projects
Topic: Shop Log: 1980 Bally Skateball
Replies: 98
Views: 3157

Re: Shop Log: 1980 Bally Skateball

Quite suddenly the machine developed a tendency to reset in the middle of a game. After it happened a few times, I realized it was triggered by the rebound switch behind the SKATE drop targets. I spent quite a lot of time looking at the rebound target wiring (several switches chained together), and ...
by tinyrodent
Thu Jul 02, 2020 6:01 am
Forum: Projects
Topic: Shop Log: 1980 Bally Skateball
Replies: 98
Views: 3157

Re: Shop Log: 1980 Bally Skateball

Yesterday I thought the final gameplay issue was fixed - a chattering left slingshot. Part of the solution was to put a tighter rubber. But after a few games it started to chatter again, I powered off and let it sit. This morning I noticed this: busted sling rubber.jpg Sometimes a new rubber can bre...
by tinyrodent
Wed Jul 01, 2020 6:08 pm
Forum: Projects
Topic: Shop Log: 1981 Bally Fathom
Replies: 38
Views: 986

Re: Shop Log: 1981 Bally Fathom

Supports installed. Rear legs grounded.
supports installed.jpg
by tinyrodent
Tue Jun 30, 2020 5:02 pm
Forum: Projects
Topic: Shop Log: 1981 Bally Fathom
Replies: 38
Views: 986

Re: Shop Log: 1981 Bally Fathom

Next I want to clean up the playfield supports. But the very first nut is cross threaded, seized onto the carriage bolt. support seizure.jpg Naturally the square part of the bolt head has already stripped out the wood and has no grip. A channel lock plier or vice grip can be used but may damage the ...
by tinyrodent
Tue Jun 30, 2020 4:52 pm
Forum: Projects
Topic: Shop Log: 1981 Bally Fathom
Replies: 38
Views: 986

Re: Shop Log: 1981 Bally Fathom

congratulations on your pinball and great food. Thanks but what do you mean about food? :) A frequently neglected area to clean is the playfield glass channel. Hard to get a good photo, but this is before, full of dirt dust and grit. glass channel dirty.jpg A few minutes with alcohol, a rag, and so...
by tinyrodent
Tue Jun 30, 2020 8:31 am
Forum: Projects
Topic: Shop Log: 1980 Bally Skateball
Replies: 98
Views: 3157

Re: Shop Log: 1980 Bally Skateball

On the one I played back in the 80's, the operator has cut one side of the B switch of the right inlane. Because, you can do it backward with the right flipper again and again, to add bonus. Is it the case on yours ? I have tried but on this game it's not easily done; if the ball goes backward at a...
by tinyrodent
Mon Jun 29, 2020 4:59 pm
Forum: Projects
Topic: Shop Log: 1980 Bally Skateball
Replies: 98
Views: 3157

Re: Shop Log: 1980 Bally Skateball

After many plays, the drop targets are behaving well except for one target of one bank. It's ejecting a bit too far, and requiring two hits to knock it down. target eject 1.jpg I found a few discussions of various fixes for this problem, then came up with my own. Plastic spacer cut from a berry cont...
by tinyrodent
Mon Jun 29, 2020 11:47 am
Forum: Projects
Topic: Shop Log: 1980 Bally Skateball
Replies: 98
Views: 3157

Re: Game Rules & Strategy

After all that I forgot to talk about strategy. :oops: With bonus multiplier retained, it makes sense to try to advance that to 5X early. It will pay at every bonus collect. Similarly, with 20/40/60 bonus retained, those are important milestones to reach early in the game. Especially if you see 19/3...
by tinyrodent
Mon Jun 29, 2020 11:28 am
Forum: Projects
Topic: Shop Log: 1980 Bally Skateball
Replies: 98
Views: 3157

Game Rules & Strategy

The game has a number of settings that can be adjusted via dip switches on the MPU board, and via the coin door test button. Most of these relate to whether or not the player's progress is saved from one ball to the next, in each scoring area. Usually I prefer maximum difficulty settings on classic ...
by tinyrodent
Mon Jun 29, 2020 9:02 am
Forum: Projects
Topic: Shop Log: 1980 Bally Skateball
Replies: 98
Views: 3157

Re: Shop Log: 1980 Bally Skateball

After playing a few games I noticed a new problem. Sometimes the bottom pop bumper does not fire. I can still hear the scoring sound effect when the ball touches the bumper skirt, but no action. Schematic for the solenoid driver board shows the bumper is driven by transistor Q10. bumper schematic.jp...
by tinyrodent
Sat Jun 27, 2020 8:19 pm
Forum: Projects
Topic: Shop Log: 1980 Bally Skateball
Replies: 98
Views: 3157

Re: Shop Log: 1980 Bally Skateball

I played a dozen games or so, and quite suddenly the bottom right flipper started to stick hard. There wasn't anything obviously wrong so I took out the flipper assembly and broke it down. Blackened dirty parts. After a dozen plays!! :evil: I polished all of this stuff before installation. dirty fli...
by tinyrodent
Thu Jun 25, 2020 1:43 pm
Forum: Projects
Topic: Shop Log: 1981 Bally Fathom
Replies: 38
Views: 986

Re: Shop Log: 1981 Bally Fathom

Flipper assemblies cleaned and rebuilt. A few parts dirty, rusted, missing, nothing especially remarkable. Next step will be to add connectors.
flipper assemblies rebuilt.jpg
by tinyrodent
Thu Jun 25, 2020 9:24 am
Forum: Projects
Topic: Shop Log: 1980 Bally Skateball
Replies: 98
Views: 3157

Re: Shop Log: 1980 Bally Skateball

I finally found a used replacement flipper coil that tested OK on the bench. It was dirty with a stuck coil sleeve. Got the sleeve out, cleaned it up, and partway through replacement got to the part where a new sleeve is inserted. Stuck fast, will not move by hand. stubborn coil sleeve.jpg A little ...
by tinyrodent
Wed Jun 24, 2020 1:37 pm
Forum: Projects
Topic: Shop Log: 1981 Bally Fathom
Replies: 38
Views: 986

Re: Shop Log: 1981 Bally Fathom

Manu2 wrote:
Sun Jun 21, 2020 4:33 am
For attract mode, you need to put at least 2 balls on the 3, in the outhole.
Thanks, that would explain it! :D Will test again sometime after the playfield returns.
by tinyrodent
Wed Jun 24, 2020 1:34 pm
Forum: Projects
Topic: Shop Log: 1980 Bally Skateball
Replies: 98
Views: 3157

Re: Shop Log: 1980 Bally Skateball

What a relief to get some cooler weather! I don't have much energy for pinball projects (or anything else) during a heatwave. Spent the time (over)thinking about the new playfield supports - what materials to use, what shape to make them, and so on. In the end I just used the scrap of rail cut out o...
by tinyrodent
Fri Jun 19, 2020 8:35 pm
Forum: Projects
Topic: Shop Log: 1981 Bally Fathom
Replies: 38
Views: 986

Re: Shop Log: 1981 Bally Fathom

Great step by step as always. Those pics really help understand the process. Fully dismantling a pin, part by little part, doesn't seem that daunting with those clear instructions! I wouldn't dare of course, let's leave this to the people that know! But that looks fun to do! Following all the way t...
by tinyrodent
Fri Jun 19, 2020 2:52 pm
Forum: Projects
Topic: Shop Log: 1981 Bally Fathom
Replies: 38
Views: 986

Re: Shop Log: 1981 Bally Fathom

Looking awesome as usual Brett! Can’t wait to see before and after pics of the clear coat job. !👍 Thanks Tom! I didn't take a lot of before pics. Mostly it looks good, just needs more clear to protect and flatten the surface. With playfield out of the way, cabinet gets vacuumed. Time to look at the...
by tinyrodent
Fri Jun 19, 2020 12:00 pm
Forum: Projects
Topic: Bally Star Trek
Replies: 86
Views: 3150

Re: Bally Star Trek

Those corner joints look very challenging! :shock:
by tinyrodent
Thu Jun 18, 2020 5:02 pm
Forum: Projects
Topic: Shop Log: 1981 Bally Fathom
Replies: 38
Views: 986

Re: Shop Log: 1981 Bally Fathom

The wooden rails are in pretty good shape, and the metal guides look brand new, except for the trashed shooter lane guard. Luckily there are replacements available . rails and guides.jpg Playfield teardown complete. Removed from cabinet. Ready to wrap ready to wrap.jpg Is it safe to move the body? :...
by tinyrodent
Thu Jun 18, 2020 1:21 pm
Forum: Projects
Topic: Shop Log: 1981 Bally Fathom
Replies: 38
Views: 986

Re: Shop Log: 1981 Bally Fathom

Manu2 wrote:
Thu Jun 18, 2020 12:05 pm
You don't have the right coil for the slingshot : AR-26-1200 is for the knocker, and AO-26-1200 for the slingshot. But I don't know the difference.
I'm pretty sure those are the same except for the type of coil sleeve used. In any case the coil labels in this game can't be trusted...
by tinyrodent
Thu Jun 18, 2020 1:05 pm
Forum: Projects
Topic: Shop Log: 1981 Bally Fathom
Replies: 38
Views: 986

Re: Shop Log: 1981 Bally Fathom

Most of the modular components have been removed. There are just a few smaller items like switch actuators.
components removed.jpg
Several of the switch stacks are falling apart.
switch falling apart.jpg
They are just taped up for now.
switch taped.jpg
by tinyrodent
Thu Jun 18, 2020 8:48 am
Forum: Projects
Topic: Shop Log: 1981 Bally Fathom
Replies: 38
Views: 986

Re: Shop Log: 1981 Bally Fathom

First set of drop target assemblies removed. These are the normal ones, without memory. The larger bank has two reset coils. Some parts clean, some parts rusty and dirty. drop targets 1.jpg Second set of drop target assemblies removed. These have memory targets, with a small coil to drop each one, i...

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