Meteor
Stern Electronics, 1979This board was gone over by a tech and i seen it boot in his Meteor when i picked it up . I have my Alltek in my Meteor and the game works fine . The m-200 won't boot in the game but will on the bench .
I have 5.3 at A4J4 pin 16,17 and 14.2 pin 12
Quoted from slochar:Try disconnecting the ribbon cables to the sound board and see if it boots then
I've tried that , no difference
that means it's running the software but failing the rom checksum.... maybe the sockets are flaky. What did the tech do to the board when they had it?
I didn't have a board when i got the game so he set up one he had for my meteor .
i saw the game boot in his meteor.
Quoted from bluespin:One ball in the trough (not two or zero)?
Slam tilt switch stuck?
Coin door switch issues?
Coin switches have jumpers and cut wires
I'll hook backup like schematics
Quoted from fireball2:Which led flash does it stop on?
1 flash
Quoted from steamfitter:Coin switches have jumpers and cut wires
I'll hook backup like schematics
it didn't change anything
Quoted from bluespin:One ball in the trough (not two or zero)?
Slam tilt switch stuck?
Coin door switch issues?
1 ball in trough
slam switches are open and diodes are good
I'm getting 5.09 v and 12.00 v at the bench and the board boots
I'm getting 5.35 v and 14.09 v at the machine and won't boot , nothing else plugged in just like on the bench .
The game has new rectifier board and rebuild driver board.
Could the difference in voltage prevent the mpu from booting
Thanks
Unplug all your displays
Had a similar issue years ago
Bad display hooked up refused the game tk boot up
Worth a shot anyways
Quoted from TheCnyPinGuy:Unplug all your displays
Had a similar issue years ago
Bad display hooked up refused the game tk boot up
Worth a shot anyways
Forgot about this! Yes. Same here! If it boots with no displays, put them back in one at a time until it doesn't to find the bad one!
Quoted from fireball2:Forgot about this! Yes. Same here! If it boots with no displays, put them back in one at a time until it doesn't to find the bad one!
Agreed--but make sure to shut the game off before unplugging or plugging in any connectors to the displays!
Fixed
Replaced solenoid driver board with an other and the game boots.
With old SDB 5.35 V & 14.09 V "flicker only"
With different SDB 5.15 V & 13.85 V "boots"
Bench 5.09 V & 12.0 V "boots"
I guess voltage makes a difference .
Thanks
That seems a bit strange, but if it works it works. I'm thinking it may not be a voltage issue at all--but perhaps a problem with one of the connectors on the old SDU. The voltages are close enough that the MPU should boot. Might be worth replacing the 0.100 header pins on the right side of the SDU and give it another shot some time. Might be a good spare!
Quoted from frunch:That seems a bit strange, but if it works it works. I'm thinking it may not be a voltage issue at all--but perhaps a problem with one of the connectors on the old SDU. The voltages are close enough that the MPU should boot.
I'm with you Cowboy. This seems a tad fishy...
Quoted from frunch:That seems a bit strange, but if it works it works. I'm thinking it may not be a voltage issue at all--but perhaps a problem with one of the connectors on the old SDU. The voltages are close enough that the MPU should boot. Might be worth replacing the 0.100 header pins on the right side of the SDU and give it another shot some time. Might be a good spare!
that was one of the first thing i did A3J3( post #4 )
Quoted from steamfitter:that was one of the first thing i did A3J3( post #4 )
Ahh, missed that. Did you replace both the male and female connector pins there?
Quoted from frunch:Ahh, missed that. Did you replace both the male and female connector pins there?
yes
voltage is actually high with that SDB , it works fine with alltek mpu
Quoted from steamfitter:With old SDB 5.35 V & 14.09 V "flicker only"
With different SDB 5.15 V & 13.85 V "boots"
Bench 5.09 V & 12.0 V "boots"
It's common for Stern SDBs to output voltage that high.
Flicker on power-up means the EPROMs failed checksum. This is becoming common with EPROMs not written properly (deeply) that cause bit errors at different 5V levels when programmed cells are borderline.
Wanna join the discussion? Please sign in to reply to this topic.
Great to see you're enjoying Pinside! Did you know Pinside is able to run without any 3rd-party banners or ads, thanks to the support from our visitors? Please consider a donation to Pinside and get anext to your username to show for it! Or better yet, subscribe to Pinside+!
This page was printed from https://pinside.com/pinball/forum/topic/m-200-boots-on-bench-but-not-in-game and we tried optimising it for printing. Some page elements may have been deliberately hidden.
Scan the QR code on the left to jump to the URL this document was printed from.
Orleans, ON
Johns Creek, GA