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Can you really brick a Dialed In!?

Mfresh

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10 Years
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Oct 7, 2012
Messages
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Marlow on Thames, Bucks
Seeing as its Furlough Friday, I figured I would *finally* get around to changing what JJP calls the "CPU battery" on the motherboard of Dialed In! The battery preserves the BIOS settings for the PC that powers the machine, and the manual states that it needs to be changed at least every three years, to make sure that the battery voltage never drops below 3V. If that happens, its says in the manual, the BIOS settings will be lost and the PC won't boot.

OK, that's not really bricking the machine, but it's pretty close to that: the machine won't start up any more, and you have to go through the procedure of putting the BIOS settings back in before the machine will boot again (something I vaguely remember doing on a 286 PC 25 years or more ago.) JJP say that they will help if this happens.

So wtf? Surely in this day and age there is a way of storing the BIOS info in some form of non volatile memory so that the pinball machine doesn't rely on a CR2032 battery never dropping below 3V when the machine is switched off. Talk about poor design.

The thing is, when JJP unveiled Dialed In at Pinball Expo Pat Lawlor got all Steve Jobsish about how brilliantly Dialed In! had been designed (by him), and how the screen hinged from both sides, there was a volume control on the outside, yadda yadda yadda. He was almost wearing a black polo neck jumper.

But when it comes to changing the battery, the design is so bad it's almost unbelievable. The battery is wedged in between the wall of the metal PC casing and a video card with an unprotected spinning fan, and you are supposed to remove the battery by constucting an extraction tool out of sticky backed plastic (I kid you not) and somehow stick it to the battery, and then yank the battery out. This ignores the fact that the sticky backed plastic (I even tried duck tape) wont stick strongly enough to pull the battery out of its holder, which has a metal clip which needs to be undone first (although there is no mention of that in the manual.) This has to be done while the machine is powered on, so that fan is spinning milimeters away from the battery.

Anyway, after grating my finger on the fan a few times and pocking at the clip with a long plastic pokey thing as well as using my sticky back plastic tool I finally managed after about 20 minutes to get the battery to spring out of its holder onto the floor, and get a new one in. Good thing too as the old battery was on 3.07V according to my meter, so it needed changing.

I don't know how things are done on other machines, but this is ridiculous.

The thing is that it's a great game, so I guess I will just have to grin and bear it!
 
I used one of those round magnet things on a telescopic handle that I use to get balls out, right size for the battery too. Was in my mame cab though.
Will need to do mine sooner or later I guess but 3.07v is ok though isn’t it? What is the actual voltage when bios settings go?
 
The magnet thing is a great idea. I just bought a set of those too. Wish I had thought of that, instead of following JJP's instructions!

3.07V was certainly holding the settings OK. The manual says they will be lost when it drops below 3V which is a suspiciously round number. I don't know what it would really have to drop to in practice but would rather not find out.
 
Great call!
Just change mine for a Energizer Lithium battery. Used a small screw driver to push up clip and magnet to pull it out. Then just replaced battery by pushing it in with magnetimage.jpg
 
It's an artifact of the off-the-shelf PC components being used. It's the same bit of a faff there, too.

They've remained this way, more or less, because the reset-to-default when power is lost is a desirable feature in some cases, and because, in all honesty, the settings stored in the CMOS aren't that complicated to replace when it blanks out. In fact for most PCs the only truly valuable setting is the current date and time.

The manual really should include the settings to change, if the built-in PC needs some changes in order to boot, and how to do it with a keyboard - or hell, even a tweaked BIOS that has the correct defaults. The advice given to change the battery while the system is on strikes me as idiotic, all to just avoid either the better solution, or for having to reset the settings.
 
Just go into the bios settings (assuming you can) write down the important settings. Probably hard disk settings and any interface settings (serial and usb) in there. Swap the battery at your leisure and reenter the handful of settings on startup.

also set date and time and away it goes again. Worst case just swap it and if it doesn’t work put a post up asking for the bios settings

im Assuming there is somewhere to plug a keyboard in

better than shredded knuckles
 
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