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Bally Video 5000/5500 MPU Boards;

Problem; Couldn't clear RAM, garbage on monitor.
Solution; Repl. U28 (Dual D Flip-Flop)

Problem; Scrambled screen.
Solution; Repl. U12 & U13.

Problem; Monitor black, machine lighting out, & power supply churping.
Solution; Repl. U55.

Problem; Scrambled screen can't clear with clear chip.
Solution; Repl. U38 & battery.

Problem; Scrambled screen.
Solution; Cleared RAM.

Problem; No meters.
Solution; Repl. U56.

Problem; Scrambled video (5K+ video MPU)
Solution; Repl. U11.

Problem; Scrambled screen.
Solution; Perform partial clear.





Bally S-5000 MPU Board;

Problem; Can't reset 83 code.
Solution; Repl. RAMs (U16 & U14).

Problem; Couldn't reset 83 code.
Solution; Repl. U42.

Problem; Board in constant reset.
Solution; Repl. Q2.


Bally Reel Control Board;

Problem; Reel 3 indexes before reel 2
Solution; Repl. U21.

Problem; Too many 41 & 46 codes.
Solution; Repl. U24.

Problem; Reels won't spin.
Solution; Repl. CR22.

Problem; Intermittent 73 code
Solution; Repl. S1 & S2.

Problem; Free wheeling (ProSlot reel reader bd.)
Solution; Repl. S1 (reel optic switch).


Bally I/O Board

Problem; No insert coin light.
Solution; Repl. trace w/jumper off of CR22.

Problem; No hopper weight switch or probe.
Solution; Repl. D6.



Bally 5K power supply;

Problem; Blackout.
Solution; Repl. Q1, Q2, IC3, R4, & R14 (multiple problems).

Problem; No power.
Solution; Repl. Q1, Q2, & R4.

Problem; Game blackout.
Solution; Repl. electrolytics.



Bally ProSlot MPU Bd.;

Problem; Constant reset
Solution; Repl. U55.

Problem; No display on D8 (Pro Slot Display Board)
Solution; Repl. U1.

Problem; Keeps resetting on power up.
Solution; Repl. U66.

Problem; Display, insert coin, & coin accept lights keep going out.
Solution; Resoldered IC socket under U66.

Problem; Counts $20.00 & $100.00 bills as $5.00 & $10.00.
Solution; Option denominations correctly (DIP switches).

Problem; Code 40 unable to clear.
Solution; Repl. U16.

Problem; Won't progress the progressive meter.
Solution; The board was NOT set-up for a serial progressive...the board must NOT have U7 installed & JW9 MUST be connected for serial.

Problem; Door open tilt.
Solution; Repl. U24.

Problem; No game play, mach. LEDs not working on door, reset light flashing w/ door open.
Solution; Repl. U34 & U71.

Problem; Bill validator inop.
Solution; Repl. U34.



Bally Hopper Control Board (AS-3356-244 rev. D)

Problem; 31 code-blinking amber (LED)
Solution; Repl. U6 (UC2950 1/2 bridge controller).

Problem; Nothing (Bally ProSlot Hopper Con't Bd.)
Solution; Repl. U1

Problem; Fried (C22 noticably burnt) AS-3356-171A rev.D
Solution; Repl. C22 & U5.

Problem; Gone fishing-decided not to work.
Solution; Repl. U1A(DBL-007)

Problem; Mixer comes on & immediately shuts down, causing hopper empty timeouts.(Pro hopper)
Solution; Repl. Q1.

Problem; No power to hopper.(Pro hopper)
Solution; Repl. U1



Bally ProSlot Power Supply;

Problem; No Voltage.
Solution; Repl. Electrolytics. (C8 brought V back.)

Problem; Display not lighting.
Solution; Repl. C8

Problem; Machine keeps blacking out.
Solution;Repl. +/- caps. & IC2.

Problem; Takes 3 or 4 minutes for display to come up...goes into various tilts.
Solution; Repl. C8 & voltages came back...repl. all electrolytics.

Problem; Push spin-cuts power.
Solution; Repl. +/- caps.

Bally 5000 Tests;

Test 2; Outputs
Test 3; Inputs
Test 4; Hopper
Test 5; Reel Function
Test 6; Reel Tape
Test 7; Reel Tilt Record
Test 8; Communications
Test 9; Display
Test 10; Payout Test

Decided to add this here, too...

Mike><>

These might be of use to someone out there...Bally 5000 (5000+) power supply schematics...

Mike><>

Bally S-5000 + info...

Bally 5000 tests...(S.A.)...

Bally Lubrication Guide...(S.A.)...

Video 5000 Diagonistic Tests...(S.A.)...

(Compressed by rickhunter)