Creature from the Black Lagoon
Bally, 1992You're currently viewing posts by Pinsider dumbass.
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Quoted from Manny65:Ground shorts are often caused by a failed LM339 chip, so I'd suspect either the CPU board or the Opto Ramp Switch board.
cftbl_opto_ramp_switch_board.jpg
You can disconnect J1 from the board and the short(s) should go away.
Quoted from Xavi3r81:I am asking because i want to put everything back but i do not want to do something wrong.
Put it back the way it was. Connect WHT-BRN to WHT-BRN and WHT to WHT. The WHT is the line neutral.
The jumper looks to be set at 230VAC.
Follow the Pinwiki subsection @ https://www.pinwiki.com/wiki/index.php/Williams_WPC#Early_WPC_Transformers_.289_pin_connection.29 to get the correct jumper settings. If you want to be sure unplug the 24-pin connector off the transformer secondary and test the transformer secondary output.
If you are in a 115VAC country there is low risk of sending the incorrect voltage output. If you are in 230VAC country then be very careful of the voltage select jumpers before powering on. Selecting 115VAC but using a line of 230VAC may damage a lot of components on your boards due to the output being twice the expected voltage.
Quoted from pinballsp:The curious thing is that both the machine manual and the WPC89 schematic are also wrong.
I must be missing something obvious.
00_schematic.jpg01_connectors.jpg
It doesn't matter which connector is inserted into which header since the pins are identical.
Quoted from pacman11:I found a broken wire off the sound board but can’t figure out where it goes. Anyone have a picture of the two small connectors on the sound board? My right top speaker works but the left doesn’t or the cabinet speaker.[quoted image]
Make sure your wiring is like this. There is a 1-pin 0.062" Molex connector that may be disconnected. Follow the wires.
Quoted from JBtheAVguy:Is Road Show supposed to be wired is series?
CAUTION: the following does NOT apply to Creature from the Black Lagoon.
It only applies to DCS machines (which Creature from the Black Lagoon is NOT).
Quoted from JBtheAVguy:Do you know what the impedance is?
I thought all WPC machines use 4 Ohm speakers. I know the early WPC machines (like Creature from the Black Lagoon) are 4 Ohm. You can measure the resistance across the speaker winding to be sure. To accurately measure, you must isolate the speaker winding from any other circuit.
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