Frispel
sedan 2001
Both the -125 and the -113 volts are the same voltage.The dot matrix display will not work if both the -125 volts and -113 volts measure as the same voltage. These two negative high voltages should be 12 volts apart. The difference in voltage occurs because of diode D6 (D3 on WPC-95), a 12 volt 1N4742 diode. The failure of this diode also kills transistor Q7 (known as Q7 in all WPC generations, a MJE15030). The -125 volts and -113 volts must be 12 volts apart, or the dot matrix display will not work!
och nu tänker du sisåhär att en sån har jag inte i verktygslådan
Make sure to check fuses F601 and F602 (all WPC games). F601 is used for +62 volts, and F602 is used for -113, -125 volts. On WPC-S and before, these are 3/8 amp fast-blo 1.25" fuses (originally Williams used slow-blo fuses here, but about 1994 they changed to fast-blo, so either fast or slow-blo can be used). On WPC-95, these are T0.315 amp 5x20mm fuses.
Priset för ett 'High-powerkit' hos, tex, P4P är mycket bra jämfört med att köpa motsvarande komponenter hos ELFA.