Build Your Own Arcade Controls Forum
Arcade Collecting => Miscellaneous Arcade Talk => Topic started by: LPZ on July 08, 2006, 10:59:05 pm
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Hey guys, I could sure use your help here with my first dedicated non-mame machine. I have built 2 MAME machines(horizontal and vertical), but this is my first shot at getting a classic going again. Snagged this spy hunter yesterday in the classifieds for $100. The seller said it played fine, then one day, it just wouldn
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WIth out a load on that supply...you won't get a correct reading...but measure the voltage for 5 volts on an IC chip...
BTW, dont short adjacent pins :angel:
for example: ____^___
1 +5v
2 15
3 14
4 13
5 12
6 11
7 10
Ground 9
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WIth out a load on that supply...you won't get a correct reading...but measure the voltage for 5 volts on an IC chip...
BTW, dont short adjacent pins :angel:
for example: ____^___
1 +5v
2 15
3 14
4 13
5 12
6 11
7 10
Ground 9
I am assuming that one side of the chip is negative and the other side is positive? Across each pair of respective legs I should get 5 volts then?
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NO ......in his diagram Pin 8 is the ground (-).... Pin 16 is the 5v (+)
You can use any ground point on the board though.
The end of the chip with the notch or notch mark is pin 1 and pin 16.
for example: ___^___
1 16 +5v
2 15
3 14
4 13
5 12
6 11
7 10
Gnd 8 9
You should also find the voltages on the schematic and measure the voltages going to the pcb/boardset itself. (if you haven't already)