by Rob-NYC »
Sat Sep 01, 2012 9:57 am
Darell, I'm glad it is working for you now. as for changing the pricing, frankly, that can be a PITA in those boxes. I just connect the quarter switch to the dime coil and that gives one play per coin.
The easiest way to go is to try grounding to chassis the correct contact on the credit wheel and that will make it free play.
Take the page assembly off as well as any shield over the contacts on the phenolic board over the credit wheel. With power on, touch a jumper from each of the contacts to ground and see which one causes the mach to step up to credit position.
An alternative is to disconnect the subtract coil (the left one). A more complicated method involves removing the credit unit loosening the screws that hold the subtract coil and sliding it downwards (the screw holes allow for this) so that it doesn't allow the subtract pawl deduct as many credits. I've no idea what the resulting credits will be.
Rob-NYC
PS: The model K that I used has no original electronics. The rear door was replaced with a later one. The selection receiver is probably a TSU-7 or similar that uses a removable stepper. I modded it to eliminate all but the 12AX7 pulse amp and 0A2 reg's ( I like them). The amp is for a 201 but the original preamp and power stages (6l6's) are not used. The phono pickup goes directly to a pre that i built and after tone shaping, AGC and the volume control the program line goes to a PA rack downstairs for distribution to 21-22 speakers @ 5W-10W/ea. A 70V line from those amps comes back up to power the cabinet speakers via a Rowe 50 watt tran setup for 15-20 watts to the cabinet. There are 21 wallboxes on this system (ugh). Other systems are similar except that the original power amp stage powers the cabinet speakers.
"KD" and "KS" just refer to dual or single pricing capability.
"If we believe absurdities, we shall commit atrocities" -- Voltaire