CossackWarrior Well-known member Donor 6 years: 2012-2013, 2015-2018 VAPS Joined Dec 19, 2012 Messages 10,994 Reaction score 587 Location Brampton, Ontario, Canada Dec 10, 2017 #1 Really nicely built Konami Mikie bootleg here that keeps re-setting. Any ideas on what is causing it?
Really nicely built Konami Mikie bootleg here that keeps re-setting. Any ideas on what is causing it?
OP OP CossackWarrior Well-known member Donor 6 years: 2012-2013, 2015-2018 VAPS Joined Dec 19, 2012 Messages 10,994 Reaction score 587 Location Brampton, Ontario, Canada Dec 11, 2017 #2 Must be a busy week.
splattergatz Well-known member Joined Jun 20, 2008 Messages 5,756 Reaction score 52 Location Belton, Missouri Dec 11, 2017 #3 maybe the +5 volts needs adjusting measure that with your trusty multimeter and see what you're getting on the power supply and ON THE BOARD and report back
maybe the +5 volts needs adjusting measure that with your trusty multimeter and see what you're getting on the power supply and ON THE BOARD and report back
OP OP CossackWarrior Well-known member Donor 6 years: 2012-2013, 2015-2018 VAPS Joined Dec 19, 2012 Messages 10,994 Reaction score 587 Location Brampton, Ontario, Canada Dec 12, 2017 #4 Voltages to the board are very good and stable. I have a +5 adjustment on my supergun test rig, playing with the +5 didnt help.
Voltages to the board are very good and stable. I have a +5 adjustment on my supergun test rig, playing with the +5 didnt help.
shoestring Active member Joined Mar 29, 2013 Messages 816 Reaction score 52 Location NSW, Australia Dec 12, 2017 #5 What voltages do you get at the chips ? Is the reset random or at the same spot every time ? Those sockets are crappy, so try reseating.
What voltages do you get at the chips ? Is the reset random or at the same spot every time ? Those sockets are crappy, so try reseating.
OP OP CossackWarrior Well-known member Donor 6 years: 2012-2013, 2015-2018 VAPS Joined Dec 19, 2012 Messages 10,994 Reaction score 587 Location Brampton, Ontario, Canada Dec 12, 2017 #6 shoestring said: What voltages do you get at the chips ? Is the reset random or at the same spot every time ? Those sockets are crappy, so try reseating. Click to expand... I'll check the voltages at the chips as soon as I get in. It resets at the same point every time. I'll take a little vid and post it. I'll also re-seat before I do anything.
shoestring said: What voltages do you get at the chips ? Is the reset random or at the same spot every time ? Those sockets are crappy, so try reseating. Click to expand... I'll check the voltages at the chips as soon as I get in. It resets at the same point every time. I'll take a little vid and post it. I'll also re-seat before I do anything.
shoestring Active member Joined Mar 29, 2013 Messages 816 Reaction score 52 Location NSW, Australia Dec 12, 2017 #7 You probably have a bad rom or sram which is causing the CPU to crash. So verify those. Check those sockets too. Last edited: Dec 12, 2017
You probably have a bad rom or sram which is causing the CPU to crash. So verify those. Check those sockets too.
OP OP CossackWarrior Well-known member Donor 6 years: 2012-2013, 2015-2018 VAPS Joined Dec 19, 2012 Messages 10,994 Reaction score 587 Location Brampton, Ontario, Canada Dec 12, 2017 #8 Ok, found a broken trace on the bottom board. Fixed it, doesn't reset anymore. So now it loads, credits, plays, but is missing the Mikie logo, and all the characters. Hmmm
Ok, found a broken trace on the bottom board. Fixed it, doesn't reset anymore. So now it loads, credits, plays, but is missing the Mikie logo, and all the characters. Hmmm