Small update. With expo last week and getting sick this week, I haven't done anything. I did get word from Clive at coinop cauldron my boards are done. The mpu was shot so no work there. I did get a replacement from Chris Hibler at expo though.
Your Power Driver board went through an over four hour repair yesterday and was worse than first thought. The prior repairs had damaged the traces to every bridge and filter capacitor, xero-crossing and some of the general illumination resulting in 27 traces having to be repaired. The plate-through holes had been patched with tiny 30 gauge wire. The board is now repaired and had been on test all day with no issues. Your remaining boards are also ready.
Repair details (all new parts):
Williams WPC-89 CPU board (SN 50013 773386, Whitewater (L-3) with prior repairs): Hacked beyond repair:
Williams WPC-89 Sound board (SN 50004 854502, Whitewater. Bad logic/ROMs. Capacitors virtually open circuit/dried out. Playing wrong sounds): Removed and checked all socketed ICs from board. New/NOS U15 Sound ROM (original failed to verify). U14 and U18 ROMs removed and internal data verified (Vcc +/- 0.25v). New 5864 Static RAM IC and 28-pin socket. LM1875 amplifier and TO-220 Sil-pad. 4x 1uf/35v tantalum capacitors (C28, C29, C46, C47). 22uf/50v/105c, 5x 47uf/25v, 2x 47uf/35v/105c, 100uf/25v/105c and 2x 4700uf/35v/105c capacitors. All headers and fuses reflowed. Fuses removed and checked -- okay. Two-tier full functional testing:
Williams Dot Matrix Controller board (SN 51439101391): All components checked/measured. Fuses removed and checked. Board cleaned up. Two-tier full functional testing:
Williams WPC-3 Power Driver board (SN 52517240332. Numerous prior repairs. Wires on rear. Used parts in prior repairs. Many damaged traces. Low voltage output): Removed all prior repairs from circuit board. 7812 voltage regulator and TO-220 Sil-pad (Q2). 2N5401 transitor (Q29). TIP102 transistor (Q30). 27 damaged traces repaired. All remaining transistors checked. C2 (100uf/50v/105c), C4 (100uf/16v), C5, C6, C7, C11, C30 (5x 15000uf/25v/105c) and C8 (100uf/100v/105c) capacitors. BR1, BR2, BR3, BR4 and BR5 (5x GBPC3506) bridge rectifiers. J101, J114, J115, J120 and J121 upgraded to high temperature headers. 0.33uf/35v military grade tantalum capacitor (C9). 10k 1/2 watt resistor (R260). +5 volt boost modification (22 ohms). Fuses removed and checked, -- 3 amp (F103) and 8 amp (F114) due to incorrect ratings. Reflowed solder at various areas around board to fix suspect or cracked solder joints. Board cleaned-up. Two-tier full functional testing:
Williams Fliptronic II (no serial number): 4x 3 amp slow blow fuses (fuses installed ranged from 5 to 8 amps). Added missing 100uf/100v capacitor (C2). Replaced out of tolerance capacitor at C1 (100uf/25v/105c). All components checked. Reflow bridge rectifier, fuse holders and headers. Two-tier full functional testing:
Whitewater Lamp Sequence board: Reflow all header pins to fix cracked solder joints. Replaced failing C1 capacitor (100uf/50v/105c). Two-tier full functional testing