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DINER dead right before Pinfest PIA failure (U41?)

David_Vi

David_Vi

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5Years
Joined
Sep 3, 2019
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Sudbury
Got home from work with intent of packing another game up. Turned on Diner and got a garbled display and what looks like PIA Failure.

See video
photos.app.goo.gl

New video by David Bowery

photos.app.goo.gl photos.app.goo.gl

@MajesticPinball thinks it might be U41, luckly it's socketted but I can't get it out without the legs breakingand have no replacement anyway.
I've tried pressing it and still no luck


20220825_000221.jpg

What is the likelihood of this being the issue? Does anyone have one of these IC's they could bring to Pinfest? But if that's not the dead part I don't want to bring a dead game to Pinfest 😓
We'd played it briefly yesterday and noticed the sound sometimes crackled and earlier today when it was on I noticed a bunch of segments stuck on each digit display but was gone on a reboot, could these be signs of something failing?


Why has this happened tonight?!

David
 
I can certainly bring a spare 6821. I fear it may not guarantee a fix though. I see evidence of old corrosion, so could be something else. You could swap the PIA with another socketed one. The theory is that if its definitely the chip, the diagnostic flashes will change to flag the new position of the duff chip.

To remove the chip gently prise it up at one end with a small flat screwdriver, just a few millimetres. Repeat at the other end so that the chip comes out square. You shouldnt break any pins unless the device is in very poor condition in which case it needs replacing anyway. Note the orientation of any device removed.

When reinserting be careful not to fold any pins under.

I am able to do this for you if you bring it to Daventry. But I am only there for part of the weekend.

PM me to let me know your plans and I'll see what we can do.
 
pinballmania said:
I can certainly bring a spare 6821. I fear it may not guarantee a fix though. I see evidence of old corrosion, so could be something else. You could swap the PIA with another socketed one. The theory is that if its definitely the chip, the diagnostic flashes will change to flag the new position of the duff chip.

To remove the chip gently prise it up at one end with a small flat screwdriver, just a few millimetres. Repeat at the other end so that the chip comes out square. You shouldnt break any pins unless the device is in very poor condition in which case it needs replacing anyway. Note the orientation of any device removed.

When reinserting be careful not to fold any pins under.

I am able to do this for you if you bring it to Daventry. But I am only there for part of the weekend.

PM me to let me know your plans and I'll see what we can do.
Click to expand...

Alan advised me that the Elektra I have will have a socketted chip that is the same. So I swapped them and no result.

The one out of diner is a mess, I managed to get it out by sliding a thin cable tie under it and attaching another tie to pull it evenly, it still needed a lot of force .
 
Then you most likely have a different board fault. This would need to be analysed and repaired in a workshop environment.
 
David_Vi said:
Alan advised me that the Elektra I have will have a socketted chip that is the same. So I swapped them and no result.

The one out of diner is a mess, I managed to get it out by sliding a thin cable tie under it and attaching another tie to pull it evenly, it still needed a lot of force .
Click to expand...
What are the contacts inside the socket like? If corroded then the answer may be to replace the socket. However thats not an easy job if the battery 'acid' has affected the solder and the tracks around the socket.
 
pinballmania said:
What are the contacts inside the socket like? If corroded then the answer may be to replace the socket. However thats not an easy job if the battery 'acid' has affected the solder and the tracks around the socket.
Click to expand...

It's a bit messy
20220825_084533.jpg
20220825_084644.jpg
 
that board is in a right state, looks like battery or atmospheric corrosion and quite ugly. Id save your money in getting it fixed as its likely to have recurring faults and get a replacement board.

Neil.
 
Agree with Neil.

Looks like it needs a load of components stripped off and board cleaned/treated.

These boards are like rocking horse poop at the moment. Put a wanted ad up. Maybe someone could bring it to pinfest!
 
Had this discussion when we got Diner, it was DOA.
But replacement boards aren't out there. 😓

I believe it's atmospheric damage rather than battery acid.
 
We'll try swapping the MPU and ROMs from bk2k so hopefully Diner can still come to Pinfest and the UK open. But I'll let @MajesticPinball do that while I'm at work as I can't be trusted near IC's.
I think I can replace a sys11c board with a sys11b?
 
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