Leaderboard

Another bizarre fault today. The board would boot sometimes, and other times only partially ie. the reels would index and then it would click to initialise but then just make a high pitch noise? Eventually I discovered that it was due to IC1 (Z80 PIO) by substitution but couldn't understand why. After much head scratching I found that if it was stuck with the funny noise just touching the chip would make it fire up correctly??? If that wasn't strange enough, only when it was touched in the middle. Further proding and poking led me to pin 16 and touching the meter on this pin would also fire it up. Now the really odd bit, this pin isn't used and therefore not connected to anything. I can only think that internally it should have damping resistor to 5v or 0v which was damaged. Anyway a replacement sorted it. Another one had me going for a little bit. It wouldn't completely boot and during the reel indexing there was no activity on reel 3. Checking on IC1 confirmed that no drive pulses were present which they were on reels 1&2. When the reel indexing sequence finished they did change state which made me think it possibly wasn't IC1? Then a thought occured to me, if the reel sensor was stuck it would think it had already indexed and would never get round to spinning the reel. Checking the reel sensor input on IC3 showed reel 3 to be stuck low and with a new chip all was restored to normal.

Hold those melons😂😂😂

Swapped the link over. Sounds now all ok. Thanks everybody for advice.

It's not as if you haven't given him a chance. Thanks for naming and shaming

Ok,as I have never had a sorry or explanation as to why I never got my 3 m1a boards back,and game cards,and chips,sockets solder resist etc,after asking many times and mainly being ignored I got excuses like he has a bad back,missus I'll or my boards are in bits,the last time I asked for them back was 3 week ago and all I got was beyond repair.well they was after that twat had them ,at least 2 were quite clean and not too hard if you know what you are doing,so sorry fruit 58 (mick) you have pissed me off and it's not acceptable.you just left it without a word knowing I needed these for my triv.over 2 years on and God knows what happened,maybe you sold them maybe you kept them,but you are out of order.i have given you more than a fair chance and still nothing.so if I were you guys do not send him anything if you plan on getting it back.its only down for dangerous Dave I got it working as he was kind enough to sell me a good board.so before you have a go at anyone else mick,look at yourself.And perhaps you should buy a dictionary.

Rare Jackpot opportunity on Super Line Up

Very nice,never knew they made vending machines.

They look amazing dicky. Always liked the look of this stuff .

I had the Lou Preager arrangement on 78, which explains that it was the First Prize winner in the "Write a Tune" contest. OK if Swing's your Thing...