Its not booting. Try pressing the red reset button and see if anything changes.
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I tired that when I was checking voltages, it did nothing. I could see the monitor reflection in another game when I pressed reset.Its not booting. Try pressing the red reset button and see if anything changes.
Is this something that should be done with every MCR game?Chances are it's the Tantalum Capacitors. I replaced all of them on my Kickman board. The first time I powered it up I had smoke coming from my board too.
Look in the parts list and find anything marked TANT and replace those. Standard Axial Electrolytic Caps will work just fine.
This is the video board:
View attachment 608199
This is the CPU board:
View attachment 608200
This is the I/O board:
View attachment 608201
It shouldn't be done on any mcr game. Waste of time and money. Just the 3 on the 12v rail on the ssio are all that need to be replaced.Is this something that should be done with every MCR game?
Update; I swapped out the switcher adapter to the original power supply board and it booted right up. I'm thinking the adapter is bad, because the switcher voltages are good. I unplugged the connectors a few times to make sure it wasn't that. Very strange. I'm glad it works again! The bad part is I lost my old HS's, tonight's test game was over 100k. Thanks for your help.That's about all i can tell you - its not booting. Could be ram, rom, reset circuit, addressing, buffering, etc, etc, etc.
12v is supplied to the lamps themselves through the 2.2 ohm resistor on the lamp board. You should see 12v at pins 5 and 6 (that goes straight to the bulbs), then the grounds are controlled through the uln2068s. That resistor (R19) is famous for opening up, and if there's no current through it (ie, the cpu isn't calling for lights), unless its completely opened, you will see 12v there, but, when the uln2068 completes the circuit, there's so much resistance that the bulb doesn't illuminate.
Long story short, i replace that resistor (R19 2.2ohm, 1watt) with a 2.2ohm 3w resistor on every lamp driver i work on. Its overkill, but its one less problem it'll ever have again. You can bypass the resistor temporarily by putting a jumper wire across it. Don't leave it that way, as that resistor is there to dim the bulbs a bit to keep the heat down and the bezel from flaking. If you bypass R19, and the lights work. Its R19.
Spy Hunter lamp driver issues-


Could be. Could also be something in the eprom addressing.My Kickman has scrambled sprites.
I assume it's some sort of ram problem in the video board?