Museum of the Game® & International Arcade Museum® Forums
Testing the power brick (with a good big blue)
Grd in pin 5
Position1= 14.2dcv
Position2 = 14.2dcv
Position3 = 14.2 dcv
Switching to ac
Positions 6 and 7 = 36.6 ac
Positionds 8 and 9 = 6.3 ac
Still no playing blind..and i did replace the bad ram chip but still no sound.
And when i test ac ripple on ar board (ground and 10.3 test point) I get 12.3 dcv and when switch to ac its all over the place from 62 to 22 to 0 and on and on and on.
So if big blue is good and the ar board is a working one then why would ac be all over the place at that test point?
The short vid below was from 9 days ago with original big blue in it...i replaced with another one (known good) and it does the same thing when on ac.
Grd in pin 5
Position1= 14.2dcv
Position2 = 14.2dcv
Position3 = 14.2 dcv
Switching to ac
Positions 6 and 7 = 36.6 ac
Positionds 8 and 9 = 6.3 ac
Still no playing blind..and i did replace the bad ram chip but still no sound.
And when i test ac ripple on ar board (ground and 10.3 test point) I get 12.3 dcv and when switch to ac its all over the place from 62 to 22 to 0 and on and on and on.
So if big blue is good and the ar board is a working one then why would ac be all over the place at that test point?
The short vid below was from 9 days ago with original big blue in it...i replaced with another one (known good) and it does the same thing when on ac.