mc300baud
Well-known member
i just did some work on my DK in a DKjr cab. the two electrical-based things i did were:
- replaced the transistor at Q4 to eliminate garbage background noise and
- installed a standard dipole toggle on/off switch to replace the flaky one that didn't engage power half the time.
got everything put back together and it looked fine. the repair at Q4 seemed to be great. then i get a burning smell. couldn't see anything and it didn't last long so i thought maybe some dust or something that got moved around while i was working on the cab (i also painted over all the visible orange with Radarscope red and did some other sanding and random cabinet repair.) a few minutes later after playing a couple of games and walking away to grab a drink i come back to a white screen. no noise, no coin-up, nothing.
so i probably burned something... no power to the PCB. the board looks fine and i doubt the trouble is there.
i know the original toggle switches for Nintendo cabinets have some line filter stuff on them and on earlier advice that it wasn't necessary i did not replace this when i put in the new toggle switch. could the lack of this stuff have cooked the power supply? is there something else that is likely to have gone bad?
- replaced the transistor at Q4 to eliminate garbage background noise and
- installed a standard dipole toggle on/off switch to replace the flaky one that didn't engage power half the time.
got everything put back together and it looked fine. the repair at Q4 seemed to be great. then i get a burning smell. couldn't see anything and it didn't last long so i thought maybe some dust or something that got moved around while i was working on the cab (i also painted over all the visible orange with Radarscope red and did some other sanding and random cabinet repair.) a few minutes later after playing a couple of games and walking away to grab a drink i come back to a white screen. no noise, no coin-up, nothing.
so i probably burned something... no power to the PCB. the board looks fine and i doubt the trouble is there.
i know the original toggle switches for Nintendo cabinets have some line filter stuff on them and on earlier advice that it wasn't necessary i did not replace this when i put in the new toggle switch. could the lack of this stuff have cooked the power supply? is there something else that is likely to have gone bad?