Gottlieb Video PCB Jumpers


On most (if not all) Gottlieb boards you will find factory installed jumper wires
running between multiple points on the solder side of the board. These jumpers
are in place to correct design flaws in the board that were discovered after the
PCBs had been manufactured. Unfortunately, these factory jumpers were never
documented in the manuals. After years of poor storage, misuse, and general age
many of these jumper wires are broken or missing all together making it extremely
difficult to repair your broken or non-working game.

The Gottlieb engineers made some very clever jumper wire connections. They used
the least amount of jumper wire possible and were able to do this by soldering
the wires to through-hole points on the solder side of the board. In many cases,
these contact points are not even close to the physical location of the chips
involved. If you are attempting to repair a board, look for old solder points,
or other signs of previous jumper wires on the solder side of the PCB.


--------------------------------
Reactor (C-???????)

K3 pin 9  to  J7 pin 4
J7 pin 3  to  L12 pin 9
L13 trace to pin 2 is cut (solder side)
K13 pin 10  to  J9 pin 12
K16 pin 5  to  L13 pin 12 and pin 8
K16 trace to pin 9 is cut (solder side)
K17 pin 2  to  K16 pin 9

A3 pin 2 is connected to the ground end of the zener diode (located between A3
and Q4) with a 470 Ohm 5% 1/4 watt resistor.

D8 pin 1 is connected to D8 pin 8 with a combination of a 0.001K ceramic cap and
a 330 Ohm 5% 1/4 watt resistor - both wired in parallel. 


--------------------------------
Q*bert (C-22248) First version of the board

A2 pin 11  to  negative end of C25 (C25 is in location R43)
R43 is swapped with C25
D5 pin 8  to  D5 pin 12 and pin 13
D5 pin 14  to  P4 pad 10 (pad 10 leads to E8 pin 1 and C7 pin 20)
E7 pin 12  to  E7 pin 18


RAM Jumpers: (these are zero-ohm resistor jumper wires)
Q*Bert: JP3; JP2; JP8; JP5

Background ROM/RAM Jumpers: (these are generally blue plastic jumper tabs)
Q*Bert: JP9; JP10


--------------------------------
Q*bert (C-22248-2) Second version of the board

No factory jumper wires


RAM Jumpers: (these are zero-ohm resistor jumper wires)
Q*Bert: JP3; JP2; JP8; JP5

Background ROM/RAM Jumpers: (these are generally blue plastic jumper tabs)
Q*Bert: JP9; JP10


--------------------------------
Q*bert (C-22248-3) Third version of the board

J9 pin 1  to D10 pin 10
J9 pin 2  to H12 pin 11


RAM Jumpers: (these are zero-ohm resistor jumper wires)
Q*Bert: JP3; JP2; JP8; JP5

Background ROM/RAM Jumpers: (these are generally blue plastic jumper tabs)
Q*Bert: JP9; JP10


--------------------------------
Mad Planets (C-22248-3) Third version of the board

Jumper Wires
[currently unknown]


RAM Jumpers: (these are zero-ohm resistor jumper wires)
Mad Planets: JP3; JP2; JP8; JP5

Background ROM/RAM Jumpers: (these are generally blue plastic jumper tabs)
Mad Planets: JP9; JP10


--------------------------------
Krull (C-22248-3) Third version of the board

G11 pin 11  to  F15 pin 12
G12 pin 1  to  F17 pin 11

G11 pin 11 trace cut (solder side)
G12 pin 1 trace cut (solder side)


RAM Jumpers: (these are zero-ohm resistor jumper wires)
Krull: JP3; JP1; JP8; JP6

Background ROM/RAM Jumpers: (these are generally blue plastic jumper tabs)
Krull: JP11; JP12 


--------------------------------
Curve Ball (C-22248-3) Third version of the board

[currently unknown]



--------------------------------
Three Stooges (C-22248-3) Third version of the board

G11 pin 11  to  F15 pin 12
G12 pin 1  to  F17 pin 11
H14 pin 4  to  K15 pin 2
H14 pin 5  to  J15 pin 11
H14 pin 6  to  G9 pin 6

G11 pin 11 trace cut (solder side)
G12 pin 1 trace cut (solder side)
K15 pin 12 trace cut (solder side)


RAM Jumpers: (these are zero-ohm resistor jumper wires)
Three Stooges: JP3; JP2; JP8; JP5

Background ROM/RAM Jumpers: (these are generally blue plastic jumper tabs)
Three Stooges: JP11; JP12 


--------------------------------
M.A.C.H. 3 ()

[currently unknown]


--------------------------------
Us vs. Them ()

[currently unknown]


--------------------------------
Q*Bert's Qubes ()

[currently unknown]





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last updated April 17, 2001