Hi guys, Hoping someone could help me out. I am bringing to life a Road Kings. I have sorted quite a few things out although I have two issues which I am having trouble with.

1. I don't get any play field sounds. The voices and music all work fine . When I push the sound button on the CPU I get really.....really faint sounds . I cant make out what they are supposed to be. I have replaced the ROM's . No joy.

2. Right lighting bolt is always on ? I have checked the resistors and replaced Q22 as a matter of course. I have to pull the globes as the #63 lamps get really hot!

Any help would be greatly appreciated. Cheers

Hi guys, Hoping someone could help me out. I am bringing to life a Road Kings. I have sorted quite a few things out although I have two issues which I am having trouble with.

1. I don't get any play field sounds. The voices and music all work fine . When I push the sound button on the CPU I get really.....really faint sounds . I cant make out what they are supposed to be. I have replaced the ROM's . No joy.

2. Right lighting bolt is always on ? I have checked the resistors and replaced Q22 as a matter of course. I have to pull the globes as the #63 lamps get really hot!

Any help would be greatly appreciated. Cheers

That was quick!
1.If I turn pot all the up I can hear an isolating sound . It does get louder and softer but still really faint.
2. Which predriver would you suggest to look at . I struggle at board level.

During the week I swapped over the Background music board. I suspected the MC 6821 , desoldering that 40 legged beast was always going to be my last option. This fixed a problem I had with the music being distorted. Is the play field sound generated from the CPU or the Music board? Do you have any hints of where to start looking?
Q18 seems to measure ok .. I will swap it anyways as I have a few in my spares.
My last Pinball I brought to life was a Bally Camelot....EM's are sooooo much easier to fault find
Cheers again for your efforts

Here you go.... If you cant work it out from the pic let me know...CheersIMAG0230[1].jpg

Hi, I changed over the ram (u23) ....still the same . Any clues on where to look next?

Thanks guys, I will change any Caps associated with sound. Think I might replace Rom sockets as well...I will let you know how I go .....Cheers

Changed caps,op amps around the sound circuit....hoping to fluke a win . No good read somewhere about a test rom would this help and if so where I could lay my hands on one.

The problem with the r/h side lighting bolt staying on and rear flasher not working I'm missing obviously missing something it is doing my head in . Thinking of maybe changing all the lamp holders . Is it a good idea to convert to led lamps. and get rid of the #63 critters? Any recommendations on what type?. Read somewhere that you just have to remove a couple of cement resistors so the led does not stay on.I am so close and yet soooo far !

Cheers ... sorted the flasher problem . A short on the resistor board, ( a really, really fine solder bridge previous owners must of replaced/re soldered at some stage). I think i might engage a competent tech re sound . Fortunately we have plenty down under.Appreciate your feed back bloody pinballs life used to be so much simpler ....and boring .

Too funny Joey......Revenge was mine...lol

Cheers..... I will replace and report back...

Fixed! Turned out to be ( u2) ,the D/A converter. I should of changed that one first I didn't like U2 before and now like them even less!......Cheers for all the advise I got .Really appreciated it.

No just one.....I must of stuttered.Road Kings is a fantastic game...Love it heaps