87 t-66
Well-known member
Converting Gravitar PCB to Black Widow - Cap / Resistor Mods
From the retrofit manual here: http://arcarc.xmission.com/PDF_Arca..._Black_Widow_Retrofit_TM-232_2nd_Printing.pdf
I have heard that converting from Gravitar to Black Widow was just a ROM swap but the instructions from Atari list a couple more steps. Can someone explain the significance of performing these mods?
1. Use the digonal cutters to remove capacitors c28 (0.001 uf) and c34 (0.22 uf). These components are not used in the Black Widow game.
2. Use the soldering iron and needle-nose pliers to remove capacitor c27 (0.001 uf) and resistor r46 (10k ohm). Replace c27 with the 100 pf capacitor and r46 with the 22k ohm resistor from the kit.
From the retrofit manual here: http://arcarc.xmission.com/PDF_Arca..._Black_Widow_Retrofit_TM-232_2nd_Printing.pdf
I have heard that converting from Gravitar to Black Widow was just a ROM swap but the instructions from Atari list a couple more steps. Can someone explain the significance of performing these mods?
1. Use the digonal cutters to remove capacitors c28 (0.001 uf) and c34 (0.22 uf). These components are not used in the Black Widow game.
2. Use the soldering iron and needle-nose pliers to remove capacitor c27 (0.001 uf) and resistor r46 (10k ohm). Replace c27 with the 100 pf capacitor and r46 with the 22k ohm resistor from the kit.