A faraday cage is the equivalent of sunscreen for stray radio/magnetic fields.

It's different than grounding, it's wrapping the entire motherboard enclosure in something conductive. It actually doesn't matter if the cage is grounded or not.

The ferrite bead on the power lines are to choke any radio interference from being let through. Think of it like a resistor for radio waves, it burns them off as heat.

Ok so another design flaw found. No big deal for a new platform. What is a big deal to me is they have a fix in hand for a couple of months and it is basically well less than $10 in parts yet they haven't sent the parts out to every buyer yet? I just bought ten ferrite filters for 70 cents each and I know EMI gasket is also cheap. If they can't afford this they should at least have issued a service bulletin detailing the fix...

It's just not that simple.

First, not every game exhibits or will ever have the issue.

You can't send out a retrofit that could easily cause additional issues if not installed properly, or to inexperienced hands that could easily create additional problems.

The gasket is custom die cut to fit and needs to be installed exactly, if it's not, it's useless.

A service bulletin about it is a good idea, but I assume they want to give the fix a bit more time in the field to be sure there are no additional issues.

--
Rob Anthony
Pinball Classics
http://LockWhenLit.com
Quality Board Work - In Home Service
borygard at gmail dot com

Thks Borygard... I just wish they would share that concern

In defense of JJP I get the point Borygard is making.

Stern implements similar frustrating (to consumer) updates. For example, in my Star Trek, they installed the wrong spring in the drop target so would not drop consistently. It was a known problem and they put a different spring in the coin box. Did they notify everyone? NO.. but when I called to complain they pointed it out, I installed it and now its working flawlessly.

For a new system, all new parts, new design, I am sure these glitches are taking a while to stamp out, much more complicated than a spring. From JJP perspective, "correcting" the problem cant happen until they are 100% certain of the fix and even then, sending it out to people that dont have the problem creates a bunch of buzz and potentially more problems.

What IS frustrating however is that it appears people have these issues and are not being contacted or (apparently) dealt with, but its hard to say who has contacted JJP and who has not.

I would think a middle ground could be to post a FAQ on their website or the JJP group that addresses known issues for those that are having problems. They can list each issue and fix with a warning "This fix is not for all machines. Do not attempt this fix unless you are experiencing XXX problem" or "Contact JJP if you notice YYY.." Or something like that.

I had this issue early on with my machine.
I swapped out the ram and my machine ran great after that.
If you don't have any ram you can try, at least try to remove the ram, then reseat it.

Hm, perhaps JJP should start sending out bootable USB sticks with memtest on them

http://www.memtest86.com/download.htm is one of the current branches - get the free version

It's not a bug in 3.0 but feel free to install 2.0..

http://support.jerseyjackpinball.com/downloads/woz/WizardOfOz_Delta_2.00.zip