I have a (generally) well behaved KoD which I have put a bit of tlc into. It plays well and is a lovely old school experience. But...

On the last ball, ball 5, when the ball drains, the score reels reset to zero. I am sure this shouldn't happen - my experience is that they normally reset when you press the start button for a new game.

Maybe I am wrong here (not unknown) but just in case, can any one suggest what I should be checking to correct the problem?

I have a schematic, but can spot no obvious places to check.

Thanks for your patience!

Thanks, Fred. It's the second scenario - score reels reset and game over light/match light turns on.

I'll have another nosy at the schematic, but it does tend to make my head spin!

I suspect there is a switch somewhere with too tight a clearance that is touching when it shouldn't. Just need to narrow down the list of suspects.

Thanks Boatcat - my apologies for the slow response!

I'll give your suggestion a try and report back. I admit I didn't have the confidence to fire up the game without everything in original position, so you've helped me already.

I've tried loosing the reset stack, but swinging it up makes it foul the playfield, so I just left it loose. Problem still there! Also, sometimes, the credit unit keeps counting down at start up - bashing the cabinet side near the reset stack tends to stop it.

I've discovered also a missing score motor brake spring at 3 1/2 on the motor - luckily I've managed to fit a replacement, but it didn't fix either of my problems.

Using the schematic to try and find a link between the last ball and score reel resetting is challenging - someone suggested the Z relay would do the resetting, but why would it do it at the wrong time? Can anyone suggest any obvious relays to double check?

Interestingly, my schematic shows switches on the score motor which I don't actually have - was there another KoD version with extra features which the schematic would also cover?

The backbox animation bank has given problems in the past - the machine can misbehave on startup if it's not tightened just right. But I've checked the switches in the KB relay and everything seems to be correct there in terms of open/closed switches.

I'm still not confident it is behaving itself though, so good call!

Sorry, Boatcat, I do read your posts to others and envy your immense knowledge and how you patiently share it with others. So I feel real bad that I have been away from the forum for a while and missed your helpful advice. Please forgive!

You seem to be spot on re the reset relay (which for some reason I called the KB when it is in fact the DB relay) it seems real touchy. On inspection it seems all okay (1B, 5A iirc), but I suspect there is some unwanted movement or gremlins if the reset bar is not exactly positioned and tightened.

Problems I have had in the past (as well as the above) have included ball not kicking into the shooter lane and the game credits continually counting down untill they reach zero. These have disappeared of their own accord, probably because I have swung over the reset units for switch inspection, and the retightening of the wingnuts has slightly altered something. Or pixie dust.

My present issue is that all seems to be working as it should except that when the ball hits a bumper or operates a rollover, instead of the expected 5 or 10 points, the 100 reel will clock up a hundred (sometimes more).

As this happens in lots of scoring positions, I assume it is not a playfield issue, but where should I start my visuals for investigating this.

As stated, I do have a schematic, but I'm not making much headway in understanding it (is it just me, or is it one of the dark arts...?)

Again, apologies to Boatcat. If you have any reserves of patience left, I would sure appreciate some pointers.

I see where you're heading with this, John. Will give it a try and report back later.

Good suggestion - and my level of tech!

Oh dear, my hopes were dashed - banging the playfield did nothing!

However, when I gently pressed a 50 bonus button, the scored clocked up 450. There's a sticky switch somewhere.....

Great call pinhead - I kept an eye on the score motor, while pressing a target, and sure enough, I clocked up an extra 400 with only a 120 degree turn. So I pulled the 10's reel, found the offending switch and adjusted it. Result! You are a star, many thanks!

Prior to this cry for help, I did consult my schematic, but while it shows what each relay should have in terms of switches and settings, units like the score reels (which actually contain more switches than some relays) are not listed. So it was hard to work out what settings I should be looking for.

One thing this "silly scoring" did reveal was that replays were not being awarded. The replay plugs are on the appropriate sockets for the required score, but passing this score does not award the credit. Any suggestions gratefully received.

Guys, I wish I had a fraction of your knowledge/experience! Many thanks for sharing - much appreciated.