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Back to pinball - a lot more fun than divisive politics From Inkochnito's https://www.pinballrebel.com/pinball/cards/ from a Gottlieb Super Score adjustment card :)

Thank you for having posted the fixes. Well done!

Gentlemen, Thank you for your service. Impressive!

For the machine that "blanks" out & resets during game play, it could be many things: o +5V supply too low from Solenoid Driver board (could be filter cap, regulator) o J4 connector on MPU may have some corroded pins, or MPU J4 header might have cold solder joints o bad sockets for chips on MPU...

Impressive and interesting research and documentation, well done, thanks!

I assume those should be for #906 bulbs for flash effect. They are driven by the MPU/solenoid transistor drivers and through A/C select relay, then through power resistors (often burned or desoldered over time). The game manual should have some info Good luck!

Some good input on pinside posted last night: https://pinside.com/pinball/forum/topic/royal-flush-matching The AX & BX interlock relays contact adjustments are critical. Also make sure the match option Jones plug is set to enable match. A diagram for the game would help to troubleshoot such...

Sold and gone to a good home. Thank you

Sold pending pickup & payment. Thank you for the interest. Merry Christmas and a Happy New Year to all !

Sold pending pickup & payment 1977 Bally Eight Ball pinball machine Works great and fast, many new parts including rubber rings, leg levellers, pinball, some bulbs, some electronic parts, etc. Nice playfield & backglass. One broken plastic. Usual cabinet dings. MPU had corrosion, neutralized...

Replacement DAC AD7533JN chips received at home today. Special Force sounds are working now ! I have another chip available for your Party Animal sound board to see if it has the same issue. We also need to cut/remove one capacitor on the sound board as part of the fix (done on Special Force).

If the sound board appears to boot (6 LED flashes) and no sound even when pressing the self-test button on it, issue might be with U8 chip on it, a DAC AD7533. Googling highlighted a Design issue and correction: http://www.pinrepair.com/6803/6803removecap.pdf I am fixing a Special Force with a...

I would double-check that there is no solder bridge between header pins on MPU J2 first.

Did it ever work correctly initially? If not, wondering if this could be a software setting or bug... Good luck!

I would remove all balls in the game and go to switch test, then see if any 'stuck'/shorted switch(es) are reported, then activate each one manually by hand one at a time to see if/which switch row/column has an issue, and compare with the manual/diagram. Then I would focus around the problem...

Just curious, what was the fix to your earlier bottom flipper flutter? Re: for your new question, flipper spongy & 'curtseys': - As others indicated, this is often caused by a worn sleeve, or mechanically misaligned - and/or a mushroomed solenoid bottom causing drag inside the sleeve - wrong...

Thanks for your time and efforts, much appreciated! No Threats Blocked pop-ups tonight and no inappropriate ads neither, excellent, Bravo! Thank you

For some reason, my Norton360 anti-virus on my home old desktop computer now pops-up a warning every time I click on a pinrev post: Is this the new 'ads' site ? Are they legit and safe ? Thanks! -Sylvain

Is the harness between the MPU (A1J2 ?) to display board (1A4J1) easily removable and this is the one your friend brought over along with his display board and MPU? Often the issue with garbled displays are connector pins in these edge connectors... If this has been checked, I would also...

New more recent details on pinside? https://pinside.com/pinball/forum/topic/bk80-hunting-the-cause-of-flipper-flutter